（三十二）c#Winform自定义控件-表格-HZHControls

官网

https://www.hzhcontrols.cn

前提

入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。

GitHub：https://github.com/kwwwvagaa/NetWinformControl

码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git

如果觉得写的还行，请点个 star 支持一下吧

欢迎前来交流探讨：企鹅群568015492

准备工作

表格控件将拆分为2部分，1：行元素控件，2：列表控件

为了具有更好的扩展性，更加的open，使用接口对行元素进行约束，当行样式或功能不满足你的需求的时候，可以自定义一个行元素，实现接口控件，然后将类型指定给列表控件即可

表格控件用到了分页控件，如果你还没有对分页控件进行了解，请移步查看

（十二）c#Winform自定义控件-分页控件

开始

定义一些辅助东西

1  public class DataGridViewCellEntity
2     {
3         public string Title { get; set; }
4         public int Width { get; set; }
5         public System.Windows.Forms.SizeType WidthType { get; set; }
6 
7     }

1     public class DataGridViewEventArgs : EventArgs
2     {
3         public Control CellControl { get; set; }
4         public int CellIndex { get; set; }
5         public int RowIndex { get; set; }
6 
7 
8     }

1     [Serializable]
2     [ComVisible(true)]
3     public delegate void DataGridViewEventHandler(object sender, DataGridViewEventArgs e);

1   public class DataGridViewColumnEntity
2     {
3         public string HeadText { get; set; }
4         public int Width { get; set; }
5         public System.Windows.Forms.SizeType WidthType { get; set; }
6         public string DataField { get; set; }
7         public Func<object, string> Format { get; set; }
8     }

定义行接口

 1  public interface IDataGridViewRow
 2     {
 3         /// <summary>
 4         /// CheckBox选中事件
 5         /// </summary>
 6         event DataGridViewEventHandler CheckBoxChangeEvent;
 7         /// <summary>
 8         /// 点击单元格事件
 9         /// </summary>
10         event DataGridViewEventHandler CellClick;
11         /// <summary>
12         /// 数据源改变事件
13         /// </summary>
14         event DataGridViewEventHandler SourceChanged;
15         /// <summary>
16         /// 列参数，用于创建列数和宽度
17         /// </summary>
18         List<DataGridViewColumnEntity> Columns { get; set; }
19         bool IsShowCheckBox { get; set; }
20         /// <summary>
21         /// 是否选中
22         /// </summary>
23         bool IsChecked { get; set; }
24 
25         /// <summary>
26         /// 数据源
27         /// </summary>
28         object DataSource { get; set; }
29         /// <summary>
30         /// 添加单元格元素，仅做添加控件操作，不做数据绑定，数据绑定使用BindingCells
31         /// </summary>
32         void ReloadCells();
33         /// <summary>
34         /// 绑定数据到Cell
35         /// </summary>
36         /// <param name="intIndex">cell下标</param>
37         /// <returns>返回true则表示已处理过，否则将进行默认绑定（通常只针对有Text值的控件）</returns>
38         void BindingCellData();
39         /// <summary>
40         /// 设置选中状态，通常为设置颜色即可
41         /// </summary>
42         /// <param name="blnSelected">是否选中</param>
43         void SetSelect(bool blnSelected);
44     }

创建行控件

添加一个用户控件，命名UCDataGridViewRow，实现接口IDataGridViewRow

属性

 1   #region 属性
 2         public event DataGridViewEventHandler CheckBoxChangeEvent;
 3 
 4         public event DataGridViewEventHandler CellClick;
 5 
 6         public event DataGridViewEventHandler SourceChanged;
 7 
 8         public List<DataGridViewColumnEntity> Columns
 9         {
10             get;
11             set;
12         }
13 
14         public object DataSource
15         {
16             get;
17             set;
18         }
19 
20         public bool IsShowCheckBox
21         {
22             get;
23             set;
24         }
25         private bool m_isChecked;
26         public bool IsChecked
27         {
28             get
29             {
30                 return m_isChecked;
31             }
32 
33             set
34             {
35                 if (m_isChecked != value)
36                 {
37                     m_isChecked = value;
38                     (this.panCells.Controls.Find("check", false)[0] as UCCheckBox).Checked = value;
39                 }
40             }
41         }
42 
43 
44         #endregion

实现接口

  1    public void BindingCellData()
  2         {
  3             for (int i = 0; i < Columns.Count; i++)
  4             {
  5                 DataGridViewColumnEntity com = Columns[i];
  6                 var cs = this.panCells.Controls.Find("lbl_" + com.DataField, false);
  7                 if (cs != null && cs.Length > 0)
  8                 {
  9                     var pro = DataSource.GetType().GetProperty(com.DataField);
 10                     if (pro != null)
 11                     {
 12                         var value = pro.GetValue(DataSource, null);
 13                         if (com.Format != null)
 14                         {
 15                             cs[0].Text = com.Format(value);
 16                         }
 17                         else
 18                         {
 19                             cs[0].Text = value.ToStringExt();
 20                         }
 21                     }
 22                 }
 23             }
 24         }
 25 
 26  public void SetSelect(bool blnSelected)
 27         {
 28             if (blnSelected)
 29             {
 30                 this.BackColor = Color.FromArgb(255, 247, 245);
 31             }
 32             else
 33             {
 34                 this.BackColor = Color.Transparent;
 35             }
 36         }
 37 
 38         public void ReloadCells()
 39         {
 40             try
 41             {
 42                 ControlHelper.FreezeControl(this, true);
 43                 this.panCells.Controls.Clear();
 44                 this.panCells.ColumnStyles.Clear();
 45 
 46                 int intColumnsCount = Columns.Count();
 47                 if (Columns != null && intColumnsCount > 0)
 48                 {
 49                     if (IsShowCheckBox)
 50                     {
 51                         intColumnsCount++;
 52                     }
 53                     this.panCells.ColumnCount = intColumnsCount;
 54                     for (int i = 0; i < intColumnsCount; i++)
 55                     {
 56                         Control c = null;
 57                         if (i == 0 && IsShowCheckBox)
 58                         {
 59                             this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F));
 60 
 61                             UCCheckBox box = new UCCheckBox();
 62                             box.Name = "check";
 63                             box.TextValue = "";
 64                             box.Size = new Size(30, 30);
 65                             box.Dock = DockStyle.Fill;
 66                             box.CheckedChangeEvent += (a, b) =>
 67                             {
 68                                 IsChecked = box.Checked;
 69                                 if (CheckBoxChangeEvent != null)
 70                                 {
 71                                     CheckBoxChangeEvent(a, new DataGridViewEventArgs()
 72                                     {
 73                                         CellControl = box,
 74                                         CellIndex = 0
 75                                     });
 76                                 }
 77                             };
 78                             c = box;
 79                         }
 80                         else
 81                         {
 82                             var item = Columns[i - (IsShowCheckBox ? 1 : 0)];
 83                             this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width));
 84 
 85                             Label lbl = new Label();
 86                             lbl.Tag = i - (IsShowCheckBox ? 1 : 0);
 87                             lbl.Name = "lbl_" + item.DataField;
 88                             lbl.Font = new Font("微软雅黑", 12);
 89                             lbl.ForeColor = Color.Black;
 90                             lbl.AutoSize = false;
 91                             lbl.Dock = DockStyle.Fill;
 92                             lbl.TextAlign = ContentAlignment.MiddleCenter;
 93                             lbl.MouseDown += (a, b) =>
 94                             {
 95                                 Item_MouseDown(a, b);
 96                             };
 97                             c = lbl;
 98                         }
 99                         this.panCells.Controls.Add(c, i, 0);
100                     }
101 
102                 }
103             }
104             finally
105             {
106                 ControlHelper.FreezeControl(this, false);
107             }
108         }

节点选中事件

 1    void Item_MouseDown(object sender, MouseEventArgs e)
 2         {
 3             if (CellClick != null)
 4             {
 5                 CellClick(sender, new DataGridViewEventArgs()
 6                 {
 7                     CellControl = this,
 8                     CellIndex = (sender as Control).Tag.ToInt()
 9                 });
10             }
11         }

完整的代码

  1 // 版权所有  黄正辉  交流群：568015492   QQ：623128629
  2 // 文件名称：UCDataGridViewRow.cs
  3 // 创建日期：2019-08-15 15:59:31
  4 // 功能描述：DataGridView
  5 // 项目地址：https://gitee.com/kwwwvagaa/net_winform_custom_control
  6 using System;
  7 using System.Collections.Generic;
  8 using System.ComponentModel;
  9 using System.Drawing;
 10 using System.Data;
 11 using System.Linq;
 12 using System.Text;
 13 using System.Windows.Forms;
 14 
 15 namespace HZH_Controls.Controls
 16 {
 17     [ToolboxItem(false)]
 18     public partial class UCDataGridViewRow : UserControl, IDataGridViewRow
 19     {
 20 
 21         #region 属性
 22         public event DataGridViewEventHandler CheckBoxChangeEvent;
 23 
 24         public event DataGridViewEventHandler CellClick;
 25 
 26         public event DataGridViewEventHandler SourceChanged;
 27 
 28         public List<DataGridViewColumnEntity> Columns
 29         {
 30             get;
 31             set;
 32         }
 33 
 34         public object DataSource
 35         {
 36             get;
 37             set;
 38         }
 39 
 40         public bool IsShowCheckBox
 41         {
 42             get;
 43             set;
 44         }
 45         private bool m_isChecked;
 46         public bool IsChecked
 47         {
 48             get
 49             {
 50                 return m_isChecked;
 51             }
 52 
 53             set
 54             {
 55                 if (m_isChecked != value)
 56                 {
 57                     m_isChecked = value;
 58                     (this.panCells.Controls.Find("check", false)[0] as UCCheckBox).Checked = value;
 59                 }
 60             }
 61         }
 62 
 63 
 64         #endregion
 65 
 66         public UCDataGridViewRow()
 67         {
 68             InitializeComponent();
 69         }
 70 
 71         public void BindingCellData()
 72         {
 73             for (int i = 0; i < Columns.Count; i++)
 74             {
 75                 DataGridViewColumnEntity com = Columns[i];
 76                 var cs = this.panCells.Controls.Find("lbl_" + com.DataField, false);
 77                 if (cs != null && cs.Length > 0)
 78                 {
 79                     var pro = DataSource.GetType().GetProperty(com.DataField);
 80                     if (pro != null)
 81                     {
 82                         var value = pro.GetValue(DataSource, null);
 83                         if (com.Format != null)
 84                         {
 85                             cs[0].Text = com.Format(value);
 86                         }
 87                         else
 88                         {
 89                             cs[0].Text = value.ToStringExt();
 90                         }
 91                     }
 92                 }
 93             }
 94         }
 95 
 96         void Item_MouseDown(object sender, MouseEventArgs e)
 97         {
 98             if (CellClick != null)
 99             {
100                 CellClick(sender, new DataGridViewEventArgs()
101                 {
102                     CellControl = this,
103                     CellIndex = (sender as Control).Tag.ToInt()
104                 });
105             }
106         }
107 
108         public void SetSelect(bool blnSelected)
109         {
110             if (blnSelected)
111             {
112                 this.BackColor = Color.FromArgb(255, 247, 245);
113             }
114             else
115             {
116                 this.BackColor = Color.Transparent;
117             }
118         }
119 
120         public void ReloadCells()
121         {
122             try
123             {
124                 ControlHelper.FreezeControl(this, true);
125                 this.panCells.Controls.Clear();
126                 this.panCells.ColumnStyles.Clear();
127 
128                 int intColumnsCount = Columns.Count();
129                 if (Columns != null && intColumnsCount > 0)
130                 {
131                     if (IsShowCheckBox)
132                     {
133                         intColumnsCount++;
134                     }
135                     this.panCells.ColumnCount = intColumnsCount;
136                     for (int i = 0; i < intColumnsCount; i++)
137                     {
138                         Control c = null;
139                         if (i == 0 && IsShowCheckBox)
140                         {
141                             this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F));
142 
143                             UCCheckBox box = new UCCheckBox();
144                             box.Name = "check";
145                             box.TextValue = "";
146                             box.Size = new Size(30, 30);
147                             box.Dock = DockStyle.Fill;
148                             box.CheckedChangeEvent += (a, b) =>
149                             {
150                                 IsChecked = box.Checked;
151                                 if (CheckBoxChangeEvent != null)
152                                 {
153                                     CheckBoxChangeEvent(a, new DataGridViewEventArgs()
154                                     {
155                                         CellControl = box,
156                                         CellIndex = 0
157                                     });
158                                 }
159                             };
160                             c = box;
161                         }
162                         else
163                         {
164                             var item = Columns[i - (IsShowCheckBox ? 1 : 0)];
165                             this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width));
166 
167                             Label lbl = new Label();
168                             lbl.Tag = i - (IsShowCheckBox ? 1 : 0);
169                             lbl.Name = "lbl_" + item.DataField;
170                             lbl.Font = new Font("微软雅黑", 12);
171                             lbl.ForeColor = Color.Black;
172                             lbl.AutoSize = false;
173                             lbl.Dock = DockStyle.Fill;
174                             lbl.TextAlign = ContentAlignment.MiddleCenter;
175                             lbl.MouseDown += (a, b) =>
176                             {
177                                 Item_MouseDown(a, b);
178                             };
179                             c = lbl;
180                         }
181                         this.panCells.Controls.Add(c, i, 0);
182                     }
183 
184                 }
185             }
186             finally
187             {
188                 ControlHelper.FreezeControl(this, false);
189             }
190         }
191 
192 
193     }
194 }

View Code

 1 namespace HZH_Controls.Controls
 2 {
 3     partial class UCDataGridViewRow
 4     {
 5         /// <summary> 
 6         /// 必需的设计器变量。
 7         /// </summary>
 8         private System.ComponentModel.IContainer components = null;
 9 
10         /// <summary> 
11         /// 清理所有正在使用的资源。
12         /// </summary>
13         /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
14         protected override void Dispose(bool disposing)
15         {
16             if (disposing && (components != null))
17             {
18                 components.Dispose();
19             }
20             base.Dispose(disposing);
21         }
22 
23         #region 组件设计器生成的代码
24 
25         /// <summary> 
26         /// 设计器支持所需的方法 - 不要
27         /// 使用代码编辑器修改此方法的内容。
28         /// </summary>
29         private void InitializeComponent()
30         {
31             this.ucSplitLine_H1 = new HZH_Controls.Controls.UCSplitLine_H();
32             this.panCells = new System.Windows.Forms.TableLayoutPanel();
33             this.SuspendLayout();
34             // 
35             // ucSplitLine_H1
36             // 
37             this.ucSplitLine_H1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
38             this.ucSplitLine_H1.Dock = System.Windows.Forms.DockStyle.Bottom;
39             this.ucSplitLine_H1.Location = new System.Drawing.Point(0, 55);
40             this.ucSplitLine_H1.Name = "ucSplitLine_H1";
41             this.ucSplitLine_H1.Size = new System.Drawing.Size(661, 1);
42             this.ucSplitLine_H1.TabIndex = 0;
43             this.ucSplitLine_H1.TabStop = false;
44             // 
45             // panCells
46             // 
47             this.panCells.ColumnCount = 1;
48             this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));
49             this.panCells.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Absolute, 20F));
50             this.panCells.Dock = System.Windows.Forms.DockStyle.Fill;
51             this.panCells.Location = new System.Drawing.Point(0, 0);
52             this.panCells.Name = "panCells";
53             this.panCells.RowCount = 1;
54             this.panCells.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
55             this.panCells.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
56             this.panCells.Size = new System.Drawing.Size(661, 55);
57             this.panCells.TabIndex = 1;
58             // 
59             // UCDataGridViewItem
60             // 
61             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
62             this.BackColor = System.Drawing.Color.White;
63             this.Controls.Add(this.panCells);
64             this.Controls.Add(this.ucSplitLine_H1);
65             this.Name = "UCDataGridViewItem";
66             this.Size = new System.Drawing.Size(661, 56);
67             this.ResumeLayout(false);
68 
69         }
70 
71         #endregion
72 
73         private UCSplitLine_H ucSplitLine_H1;
74         private System.Windows.Forms.TableLayoutPanel panCells;
75     }
76 }

View Code

接下来就是列表控件了

添加一个用户控件，命名UCDataGridView

属性

  1  #region 属性
  2         private Font m_headFont = new Font("微软雅黑", 12F);
  3         /// <summary>
  4         /// 标题字体
  5         /// </summary>
  6         [Description("标题字体"), Category("自定义")]
  7         public Font HeadFont
  8         {
  9             get { return m_headFont; }
 10             set { m_headFont = value; }
 11         }
 12         private Color m_headTextColor = Color.Black;
 13         /// <summary>
 14         /// 标题字体颜色
 15         /// </summary>
 16         [Description("标题文字颜色"), Category("自定义")]
 17         public Color HeadTextColor
 18         {
 19             get { return m_headTextColor; }
 20             set { m_headTextColor = value; }
 21         }
 22 
 23         private bool m_isShowHead = true;
 24         /// <summary>
 25         /// 是否显示标题
 26         /// </summary>
 27         [Description("是否显示标题"), Category("自定义")]
 28         public bool IsShowHead
 29         {
 30             get { return m_isShowHead; }
 31             set
 32             {
 33                 m_isShowHead = value;
 34                 panHead.Visible = value;
 35                 if (m_page != null)
 36                 {
 37                     ResetShowCount();
 38                     m_page.PageSize = m_showCount;
 39                 }
 40             }
 41         }
 42         private int m_headHeight = 40;
 43         /// <summary>
 44         /// 标题高度
 45         /// </summary>
 46         [Description("标题高度"), Category("自定义")]
 47         public int HeadHeight
 48         {
 49             get { return m_headHeight; }
 50             set
 51             {
 52                 m_headHeight = value;
 53                 panHead.Height = value;
 54             }
 55         }
 56 
 57         private bool m_isShowCheckBox = false;
 58         /// <summary>
 59         /// 是否显示复选框
 60         /// </summary>
 61         [Description("是否显示选择框"), Category("自定义")]
 62         public bool IsShowCheckBox
 63         {
 64             get { return m_isShowCheckBox; }
 65             set
 66             {
 67                 if (value != m_isShowCheckBox)
 68                 {
 69                     m_isShowCheckBox = value;
 70                     LoadColumns();
 71                 }
 72             }
 73         }
 74 
 75         private int m_rowHeight = 40;
 76         /// <summary>
 77         /// 行高
 78         /// </summary>
 79         [Description("数据行高"), Category("自定义")]
 80         public int RowHeight
 81         {
 82             get { return m_rowHeight; }
 83             set { m_rowHeight = value; }
 84         }
 85 
 86         private int m_showCount = 0;
 87         /// <summary>
 88         /// 
 89         /// </summary>
 90         [Description("可显示个数"), Category("自定义")]
 91         public int ShowCount
 92         {
 93             get { return m_showCount; }
 94             private set
 95             {
 96                 m_showCount = value;
 97                 if (m_page != null)
 98                 {
 99                     m_page.PageSize = value;
100                 }
101             }
102         }
103 
104         private List<DataGridViewColumnEntity> m_columns;
105         /// <summary>
106         /// 列
107         /// </summary>
108         [Description("列"), Category("自定义")]
109         public List<DataGridViewColumnEntity> Columns
110         {
111             get { return m_columns; }
112             set
113             {
114                 m_columns = value;
115                 LoadColumns();
116             }
117         }
118 
119         private object m_dataSource;
120         /// <summary>
121         /// 数据源,支持列表或table，如果使用翻页控件，请使用翻页控件的DataSource
122         /// </summary>
123         [Description("数据源,支持列表或table，如果使用翻页控件，请使用翻页控件的DataSource"), Category("自定义")]
124         public object DataSource
125         {
126             get { return m_dataSource; }
127             set
128             {
129                 if (value == null)
130                     return;
131                 if (!(m_dataSource is DataTable) && (!typeof(IList).IsAssignableFrom(value.GetType())))
132                 {
133                     throw new Exception("数据源不是有效的数据类型，请使用Datatable或列表");
134                 }
135 
136                 m_dataSource = value;
137                 ReloadSource();
138             }
139         }
140 
141         public List<IDataGridViewRow> Rows { get; private set; }
142 
143         private Type m_rowType = typeof(UCDataGridViewRow);
144         /// <summary>
145         /// 行元素类型，默认UCDataGridViewItem
146         /// </summary>
147         [Description("行控件类型，默认UCDataGridViewRow，如果不满足请自定义行控件实现接口IDataGridViewRow"), Category("自定义")]
148         public Type RowType
149         {
150             get { return m_rowType; }
151             set
152             {
153                 if (value == null)
154                     return;
155                 if (!typeof(IDataGridViewRow).IsAssignableFrom(value) || !value.IsSubclassOf(typeof(Control)))
156                     throw new Exception("行控件没有实现IDataGridViewRow接口");
157                 m_rowType = value;
158             }
159         }
160         IDataGridViewRow m_selectRow = null;
161         /// <summary>
162         /// 选中的节点
163         /// </summary>
164         [Description("选中行"), Category("自定义")]
165         public IDataGridViewRow SelectRow
166         {
167             get { return m_selectRow; }
168             private set { m_selectRow = value; }
169         }
170 
171 
172         /// <summary>
173         /// 选中的行，如果显示CheckBox，则以CheckBox选中为准
174         /// </summary>
175         [Description("选中的行，如果显示CheckBox，则以CheckBox选中为准"), Category("自定义")]
176         public List<IDataGridViewRow> SelectRows
177         {
178             get
179             {
180                 if (m_isShowCheckBox)
181                 {
182                     return Rows.FindAll(p => p.IsChecked);
183                 }
184                 else
185                     return new List<IDataGridViewRow>() { m_selectRow };
186             }
187         }
188 
189 
190         private UCPagerControlBase m_page = null;
191         /// <summary>
192         /// 翻页控件
193         /// </summary>
194         [Description("翻页控件，如果UCPagerControl不满足你的需求，请自定义翻页控件并继承UCPagerControlBase"), Category("自定义")]
195         public UCPagerControlBase Page
196         {
197             get { return m_page; }
198             set
199             {
200                 m_page = value;
201                 if (value != null)
202                 {
203                     if (!typeof(IPageControl).IsAssignableFrom(value.GetType()) || !value.GetType().IsSubclassOf(typeof(UCPagerControlBase)))
204                         throw new Exception("翻页控件没有继承UCPagerControlBase");
205                     panPage.Visible = value != null;
206                     m_page.ShowSourceChanged += page_ShowSourceChanged;
207                     m_page.Dock = DockStyle.Fill;
208                     this.panPage.Controls.Clear();
209                     this.panPage.Controls.Add(m_page);
210                     ResetShowCount();
211                     m_page.PageSize = ShowCount;
212                     this.DataSource = m_page.GetCurrentSource();
213                 }
214                 else
215                 {
216                     m_page = null;
217                 }
218             }
219         }
220 
221         void page_ShowSourceChanged(object currentSource)
222         {
223             this.DataSource = currentSource;
224         }
225 
226         #region 事件
227         [Description("选中标题选择框事件"), Category("自定义")]
228         public EventHandler HeadCheckBoxChangeEvent;
229         [Description("标题点击事件"), Category("自定义")]
230         public EventHandler HeadColumnClickEvent;
231         [Description("项点击事件"), Category("自定义")]
232         public event DataGridViewEventHandler ItemClick;
233         [Description("数据源改变事件"), Category("自定义")]
234         public event DataGridViewEventHandler SourceChanged;
235         #endregion
236         #endregion

一些私有的方法

 1   #region 私有方法
 2         #region 加载column
 3         /// <summary>
 4         /// 功能描述:加载column
 5         /// 作　　者:HZH
 6         /// 创建日期:2019-08-08 17:51:50
 7         /// 任务编号:POS
 8         /// </summary>
 9         private void LoadColumns()
10         {
11             try
12             {
13                 if (DesignMode)
14                 { return; }
15 
16                 ControlHelper.FreezeControl(this.panHead, true);
17                 this.panColumns.Controls.Clear();
18                 this.panColumns.ColumnStyles.Clear();
19 
20                 if (m_columns != null && m_columns.Count() > 0)
21                 {
22                     int intColumnsCount = m_columns.Count();
23                     if (m_isShowCheckBox)
24                     {
25                         intColumnsCount++;
26                     }
27                     this.panColumns.ColumnCount = intColumnsCount;
28                     for (int i = 0; i < intColumnsCount; i++)
29                     {
30                         Control c = null;
31                         if (i == 0 && m_isShowCheckBox)
32                         {
33                             this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F));
34 
35                             UCCheckBox box = new UCCheckBox();
36                             box.TextValue = "";
37                             box.Size = new Size(30, 30);
38                             box.CheckedChangeEvent += (a, b) =>
39                             {
40                                 Rows.ForEach(p => p.IsChecked = box.Checked);
41                                 if (HeadCheckBoxChangeEvent != null)
42                                 {
43                                     HeadCheckBoxChangeEvent(a, b);
44                                 }
45                             };
46                             c = box;
47                         }
48                         else
49                         {
50                             var item = m_columns[i - (m_isShowCheckBox ? 1 : 0)];
51                             this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width));
52                             Label lbl = new Label();
53                             lbl.Name = "dgvColumns_" + i;
54                             lbl.Text = item.HeadText;
55                             lbl.Font = m_headFont;
56                             lbl.ForeColor = m_headTextColor;
57                             lbl.TextAlign = ContentAlignment.MiddleCenter;
58                             lbl.AutoSize = false;
59                             lbl.Dock = DockStyle.Fill;
60                             lbl.MouseDown += (a, b) =>
61                             {
62                                 if (HeadColumnClickEvent != null)
63                                 {
64                                     HeadColumnClickEvent(a, b);
65                                 }
66                             };
67                             c = lbl;
68                         }
69                         this.panColumns.Controls.Add(c, i, 0);
70                     }
71 
72                 }
73             }
74             finally
75             {
76                 ControlHelper.FreezeControl(this.panHead, false);
77             }
78         }
79         #endregion
80 
81         /// <summary>
82         /// 功能描述:获取显示个数
83         /// 作　　者:HZH
84         /// 创建日期:2019-03-05 10:02:58
85         /// 任务编号:POS
86         /// </summary>
87         /// <returns>返回值</returns>
88         private void ResetShowCount()
89         {
90             if (DesignMode)
91             { return; }
92             ShowCount = this.panRow.Height / (m_rowHeight);
93             int intCha = this.panRow.Height % (m_rowHeight);
94             m_rowHeight += intCha / ShowCount;
95         }
96         #endregion

几个事件

 1  #region 事件
 2         void RowSourceChanged(object sender, DataGridViewEventArgs e)
 3         {
 4             if (SourceChanged != null)
 5                 SourceChanged(sender, e);
 6         }
 7         private void SetSelectRow(Control item, DataGridViewEventArgs e)
 8         {
 9             try
10             {
11                 ControlHelper.FreezeControl(this, true);
12                 if (item == null)
13                     return;
14                 if (item.Visible == false)
15                     return;
16                 this.FindForm().ActiveControl = this;
17                 this.FindForm().ActiveControl = item;
18                 if (m_selectRow != null)
19                 {
20                     if (m_selectRow == item)
21                         return;
22                     m_selectRow.SetSelect(false);
23                 }
24                 m_selectRow = item as IDataGridViewRow;
25                 m_selectRow.SetSelect(true);
26                 if (ItemClick != null)
27                 {
28                     ItemClick(item, e);
29                 }
30                 if (this.panRow.Controls.Count > 0)
31                 {
32                     if (item.Location.Y < 0)
33                     {
34                         this.panRow.AutoScrollPosition = new Point(0, Math.Abs(this.panRow.Controls[this.panRow.Controls.Count - 1].Location.Y) + item.Location.Y);
35                     }
36                     else if (item.Location.Y + m_rowHeight > this.panRow.Height)
37                     {
38                         this.panRow.AutoScrollPosition = new Point(0, Math.Abs(this.panRow.AutoScrollPosition.Y) + item.Location.Y - this.panRow.Height + m_rowHeight);
39                     }
40                 }
41             }
42             finally
43             {
44                 ControlHelper.FreezeControl(this, false);
45             }
46         }
47         private void UCDataGridView_Resize(object sender, EventArgs e)
48         {
49             ResetShowCount();
50             ReloadSource();
51         }
52         #endregion

对外公开的函数

  1  #region 公共函数
  2         /// <summary>
  3         /// 刷新数据
  4         /// </summary>
  5         public void ReloadSource()
  6         {
  7             if (DesignMode)
  8             { return; }
  9             try
 10             {
 11                 if (m_columns == null || m_columns.Count <= 0)
 12                     return;
 13 
 14                 ControlHelper.FreezeControl(this.panRow, true);
 15                 this.panRow.Controls.Clear();
 16                 Rows = new List<IDataGridViewRow>();
 17                 if (m_dataSource != null)
 18                 {
 19                     int intIndex = 0;
 20                     Control lastItem = null;
 21 
 22                     int intSourceCount = 0;
 23                     if (m_dataSource is DataTable)
 24                     {
 25                         intSourceCount = (m_dataSource as DataTable).Rows.Count;
 26                     }
 27                     else if (typeof(IList).IsAssignableFrom(m_dataSource.GetType()))
 28                     {
 29                         intSourceCount = (m_dataSource as IList).Count;
 30                     }
 31 
 32                     foreach (Control item in this.panRow.Controls)
 33                     {
 34 
 35 
 36                         if (intIndex >= intSourceCount)
 37                         {
 38                             item.Visible = false;
 39                         }
 40                         else
 41                         {
 42                             var row = (item as IDataGridViewRow);
 43                             row.IsShowCheckBox = m_isShowCheckBox;
 44                             if (m_dataSource is DataTable)
 45                             {
 46                                 row.DataSource = (m_dataSource as DataTable).Rows[intIndex];
 47                             }
 48                             else
 49                             {
 50                                 row.DataSource = (m_dataSource as IList)[intIndex];
 51                             }
 52                             row.BindingCellData();
 53                             item.Height = m_rowHeight;
 54                             item.Visible = true;
 55                             item.BringToFront();
 56                             if (lastItem == null)
 57                                 lastItem = item;
 58                             Rows.Add(row);
 59                         }
 60                         intIndex++;
 61                     }
 62 
 63                     if (intIndex < intSourceCount)
 64                     {
 65                         for (int i = intIndex; i < intSourceCount; i++)
 66                         {
 67                             IDataGridViewRow row = (IDataGridViewRow)Activator.CreateInstance(m_rowType);
 68                             if (m_dataSource is DataTable)
 69                             {
 70                                 row.DataSource = (m_dataSource as DataTable).Rows[i];
 71                             }
 72                             else
 73                             {
 74                                 row.DataSource = (m_dataSource as IList)[i];
 75                             }
 76                             row.Columns = m_columns;
 77                             List<Control> lstCells = new List<Control>();
 78                             row.IsShowCheckBox = m_isShowCheckBox;
 79                             row.ReloadCells();
 80                             row.BindingCellData();
 81 
 82 
 83                             Control rowControl = (row as Control);
 84                             rowControl.Height = m_rowHeight;
 85                             this.panRow.Controls.Add(rowControl);
 86                             rowControl.Dock = DockStyle.Top;
 87                             row.CellClick += (a, b) => { SetSelectRow(rowControl, b); };
 88                             row.CheckBoxChangeEvent += (a, b) => { SetSelectRow(rowControl, b); };
 89                             row.SourceChanged += RowSourceChanged;
 90                             rowControl.BringToFront();
 91                             Rows.Add(row);
 92 
 93                             if (lastItem == null)
 94                                 lastItem = rowControl;
 95                         }
 96                     }
 97                     if (lastItem != null && intSourceCount == m_showCount)
 98                     {
 99                         lastItem.Height = this.panRow.Height - (m_showCount - 1) * m_rowHeight;
100                     }
101                 }
102             }
103             finally
104             {
105                 ControlHelper.FreezeControl(this.panRow, false);
106             }
107         }
108 
109 
110         /// <summary>
111         /// 快捷键
112         /// </summary>
113         /// <param name="msg"></param>
114         /// <param name="keyData"></param>
115         /// <returns></returns>
116         protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
117         {
118             if (keyData == Keys.Up)
119             {
120                 Previous();
121             }
122             else if (keyData == Keys.Down)
123             {
124                 Next();
125             }
126             else if (keyData == Keys.Home)
127             {
128                 First();
129             }
130             else if (keyData == Keys.End)
131             {
132                 End();
133             }
134             return base.ProcessCmdKey(ref msg, keyData);
135         }
136         /// <summary>
137         /// 选中第一个
138         /// </summary>
139         public void First()
140         {
141             if (Rows == null || Rows.Count <= 0)
142                 return;
143             Control c = null;
144             c = (Rows[0] as Control);
145             SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = 0 });
146         }
147         /// <summary>
148         /// 选中上一个
149         /// </summary>
150         public void Previous()
151         {
152             if (Rows == null || Rows.Count <= 0)
153                 return;
154             Control c = null;
155 
156             int index = Rows.IndexOf(m_selectRow);
157             if (index - 1 >= 0)
158             {
159                 c = (Rows[index - 1] as Control);
160                 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index - 1 });
161             }
162         }
163         /// <summary>
164         /// 选中下一个
165         /// </summary>
166         public void Next()
167         {
168             if (Rows == null || Rows.Count <= 0)
169                 return;
170             Control c = null;
171 
172             int index = Rows.IndexOf(m_selectRow);
173             if (index + 1 < Rows.Count)
174             {
175                 c = (Rows[index + 1] as Control);
176                 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index + 1 });
177             }
178         }
179         /// <summary>
180         /// 选中最后一个
181         /// </summary>
182         public void End()
183         {
184             if (Rows == null || Rows.Count <= 0)
185                 return;
186             Control c = null;
187             c = (Rows[Rows.Count - 1] as Control);
188             SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = Rows.Count - 1 });
189         }
190 
191         #endregion

完整代码

  1 // 版权所有  黄正辉  交流群：568015492   QQ：623128629
  2 // 文件名称：UCDataGridView.cs
  3 // 创建日期：2019-08-15 15:59:25
  4 // 功能描述：DataGridView
  5 // 项目地址：https://gitee.com/kwwwvagaa/net_winform_custom_control
  6 using System;
  7 using System.Collections.Generic;
  8 using System.ComponentModel;
  9 using System.Drawing;
 10 using System.Data;
 11 using System.Linq;
 12 using System.Text;
 13 using System.Windows.Forms;
 14 using System.Collections;
 15 
 16 namespace HZH_Controls.Controls
 17 {
 18     public partial class UCDataGridView : UserControl
 19     {
 20         #region 属性
 21         private Font m_headFont = new Font("微软雅黑", 12F);
 22         /// <summary>
 23         /// 标题字体
 24         /// </summary>
 25         [Description("标题字体"), Category("自定义")]
 26         public Font HeadFont
 27         {
 28             get { return m_headFont; }
 29             set { m_headFont = value; }
 30         }
 31         private Color m_headTextColor = Color.Black;
 32         /// <summary>
 33         /// 标题字体颜色
 34         /// </summary>
 35         [Description("标题文字颜色"), Category("自定义")]
 36         public Color HeadTextColor
 37         {
 38             get { return m_headTextColor; }
 39             set { m_headTextColor = value; }
 40         }
 41 
 42         private bool m_isShowHead = true;
 43         /// <summary>
 44         /// 是否显示标题
 45         /// </summary>
 46         [Description("是否显示标题"), Category("自定义")]
 47         public bool IsShowHead
 48         {
 49             get { return m_isShowHead; }
 50             set
 51             {
 52                 m_isShowHead = value;
 53                 panHead.Visible = value;
 54                 if (m_page != null)
 55                 {
 56                     ResetShowCount();
 57                     m_page.PageSize = m_showCount;
 58                 }
 59             }
 60         }
 61         private int m_headHeight = 40;
 62         /// <summary>
 63         /// 标题高度
 64         /// </summary>
 65         [Description("标题高度"), Category("自定义")]
 66         public int HeadHeight
 67         {
 68             get { return m_headHeight; }
 69             set
 70             {
 71                 m_headHeight = value;
 72                 panHead.Height = value;
 73             }
 74         }
 75 
 76         private bool m_isShowCheckBox = false;
 77         /// <summary>
 78         /// 是否显示复选框
 79         /// </summary>
 80         [Description("是否显示选择框"), Category("自定义")]
 81         public bool IsShowCheckBox
 82         {
 83             get { return m_isShowCheckBox; }
 84             set
 85             {
 86                 if (value != m_isShowCheckBox)
 87                 {
 88                     m_isShowCheckBox = value;
 89                     LoadColumns();
 90                 }
 91             }
 92         }
 93 
 94         private int m_rowHeight = 40;
 95         /// <summary>
 96         /// 行高
 97         /// </summary>
 98         [Description("数据行高"), Category("自定义")]
 99         public int RowHeight
100         {
101             get { return m_rowHeight; }
102             set { m_rowHeight = value; }
103         }
104 
105         private int m_showCount = 0;
106         /// <summary>
107         /// 
108         /// </summary>
109         [Description("可显示个数"), Category("自定义")]
110         public int ShowCount
111         {
112             get { return m_showCount; }
113             private set
114             {
115                 m_showCount = value;
116                 if (m_page != null)
117                 {
118                     m_page.PageSize = value;
119                 }
120             }
121         }
122 
123         private List<DataGridViewColumnEntity> m_columns;
124         /// <summary>
125         /// 列
126         /// </summary>
127         [Description("列"), Category("自定义")]
128         public List<DataGridViewColumnEntity> Columns
129         {
130             get { return m_columns; }
131             set
132             {
133                 m_columns = value;
134                 LoadColumns();
135             }
136         }
137 
138         private object m_dataSource;
139         /// <summary>
140         /// 数据源,支持列表或table，如果使用翻页控件，请使用翻页控件的DataSource
141         /// </summary>
142         [Description("数据源,支持列表或table，如果使用翻页控件，请使用翻页控件的DataSource"), Category("自定义")]
143         public object DataSource
144         {
145             get { return m_dataSource; }
146             set
147             {
148                 if (value == null)
149                     return;
150                 if (!(m_dataSource is DataTable) && (!typeof(IList).IsAssignableFrom(value.GetType())))
151                 {
152                     throw new Exception("数据源不是有效的数据类型，请使用Datatable或列表");
153                 }
154 
155                 m_dataSource = value;
156                 ReloadSource();
157             }
158         }
159 
160         public List<IDataGridViewRow> Rows { get; private set; }
161 
162         private Type m_rowType = typeof(UCDataGridViewRow);
163         /// <summary>
164         /// 行元素类型，默认UCDataGridViewItem
165         /// </summary>
166         [Description("行控件类型，默认UCDataGridViewRow，如果不满足请自定义行控件实现接口IDataGridViewRow"), Category("自定义")]
167         public Type RowType
168         {
169             get { return m_rowType; }
170             set
171             {
172                 if (value == null)
173                     return;
174                 if (!typeof(IDataGridViewRow).IsAssignableFrom(value) || !value.IsSubclassOf(typeof(Control)))
175                     throw new Exception("行控件没有实现IDataGridViewRow接口");
176                 m_rowType = value;
177             }
178         }
179         IDataGridViewRow m_selectRow = null;
180         /// <summary>
181         /// 选中的节点
182         /// </summary>
183         [Description("选中行"), Category("自定义")]
184         public IDataGridViewRow SelectRow
185         {
186             get { return m_selectRow; }
187             private set { m_selectRow = value; }
188         }
189 
190 
191         /// <summary>
192         /// 选中的行，如果显示CheckBox，则以CheckBox选中为准
193         /// </summary>
194         [Description("选中的行，如果显示CheckBox，则以CheckBox选中为准"), Category("自定义")]
195         public List<IDataGridViewRow> SelectRows
196         {
197             get
198             {
199                 if (m_isShowCheckBox)
200                 {
201                     return Rows.FindAll(p => p.IsChecked);
202                 }
203                 else
204                     return new List<IDataGridViewRow>() { m_selectRow };
205             }
206         }
207 
208 
209         private UCPagerControlBase m_page = null;
210         /// <summary>
211         /// 翻页控件
212         /// </summary>
213         [Description("翻页控件，如果UCPagerControl不满足你的需求，请自定义翻页控件并继承UCPagerControlBase"), Category("自定义")]
214         public UCPagerControlBase Page
215         {
216             get { return m_page; }
217             set
218             {
219                 m_page = value;
220                 if (value != null)
221                 {
222                     if (!typeof(IPageControl).IsAssignableFrom(value.GetType()) || !value.GetType().IsSubclassOf(typeof(UCPagerControlBase)))
223                         throw new Exception("翻页控件没有继承UCPagerControlBase");
224                     panPage.Visible = value != null;
225                     m_page.ShowSourceChanged += page_ShowSourceChanged;
226                     m_page.Dock = DockStyle.Fill;
227                     this.panPage.Controls.Clear();
228                     this.panPage.Controls.Add(m_page);
229                     ResetShowCount();
230                     m_page.PageSize = ShowCount;
231                     this.DataSource = m_page.GetCurrentSource();
232                 }
233                 else
234                 {
235                     m_page = null;
236                 }
237             }
238         }
239 
240         void page_ShowSourceChanged(object currentSource)
241         {
242             this.DataSource = currentSource;
243         }
244 
245         #region 事件
246         [Description("选中标题选择框事件"), Category("自定义")]
247         public EventHandler HeadCheckBoxChangeEvent;
248         [Description("标题点击事件"), Category("自定义")]
249         public EventHandler HeadColumnClickEvent;
250         [Description("项点击事件"), Category("自定义")]
251         public event DataGridViewEventHandler ItemClick;
252         [Description("数据源改变事件"), Category("自定义")]
253         public event DataGridViewEventHandler SourceChanged;
254         #endregion
255         #endregion
256 
257         public UCDataGridView()
258         {
259             InitializeComponent();
260         }
261 
262         #region 私有方法
263         #region 加载column
264         /// <summary>
265         /// 功能描述:加载column
266         /// 作　　者:HZH
267         /// 创建日期:2019-08-08 17:51:50
268         /// 任务编号:POS
269         /// </summary>
270         private void LoadColumns()
271         {
272             try
273             {
274                 if (DesignMode)
275                 { return; }
276 
277                 ControlHelper.FreezeControl(this.panHead, true);
278                 this.panColumns.Controls.Clear();
279                 this.panColumns.ColumnStyles.Clear();
280 
281                 if (m_columns != null && m_columns.Count() > 0)
282                 {
283                     int intColumnsCount = m_columns.Count();
284                     if (m_isShowCheckBox)
285                     {
286                         intColumnsCount++;
287                     }
288                     this.panColumns.ColumnCount = intColumnsCount;
289                     for (int i = 0; i < intColumnsCount; i++)
290                     {
291                         Control c = null;
292                         if (i == 0 && m_isShowCheckBox)
293                         {
294                             this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(SizeType.Absolute, 30F));
295 
296                             UCCheckBox box = new UCCheckBox();
297                             box.TextValue = "";
298                             box.Size = new Size(30, 30);
299                             box.CheckedChangeEvent += (a, b) =>
300                             {
301                                 Rows.ForEach(p => p.IsChecked = box.Checked);
302                                 if (HeadCheckBoxChangeEvent != null)
303                                 {
304                                     HeadCheckBoxChangeEvent(a, b);
305                                 }
306                             };
307                             c = box;
308                         }
309                         else
310                         {
311                             var item = m_columns[i - (m_isShowCheckBox ? 1 : 0)];
312                             this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(item.WidthType, item.Width));
313                             Label lbl = new Label();
314                             lbl.Name = "dgvColumns_" + i;
315                             lbl.Text = item.HeadText;
316                             lbl.Font = m_headFont;
317                             lbl.ForeColor = m_headTextColor;
318                             lbl.TextAlign = ContentAlignment.MiddleCenter;
319                             lbl.AutoSize = false;
320                             lbl.Dock = DockStyle.Fill;
321                             lbl.MouseDown += (a, b) =>
322                             {
323                                 if (HeadColumnClickEvent != null)
324                                 {
325                                     HeadColumnClickEvent(a, b);
326                                 }
327                             };
328                             c = lbl;
329                         }
330                         this.panColumns.Controls.Add(c, i, 0);
331                     }
332 
333                 }
334             }
335             finally
336             {
337                 ControlHelper.FreezeControl(this.panHead, false);
338             }
339         }
340         #endregion
341 
342         /// <summary>
343         /// 功能描述:获取显示个数
344         /// 作　　者:HZH
345         /// 创建日期:2019-03-05 10:02:58
346         /// 任务编号:POS
347         /// </summary>
348         /// <returns>返回值</returns>
349         private void ResetShowCount()
350         {
351             if (DesignMode)
352             { return; }
353             ShowCount = this.panRow.Height / (m_rowHeight);
354             int intCha = this.panRow.Height % (m_rowHeight);
355             m_rowHeight += intCha / ShowCount;
356         }
357         #endregion
358 
359         #region 公共函数
360         /// <summary>
361         /// 刷新数据
362         /// </summary>
363         public void ReloadSource()
364         {
365             if (DesignMode)
366             { return; }
367             try
368             {
369                 if (m_columns == null || m_columns.Count <= 0)
370                     return;
371 
372                 ControlHelper.FreezeControl(this.panRow, true);
373                 this.panRow.Controls.Clear();
374                 Rows = new List<IDataGridViewRow>();
375                 if (m_dataSource != null)
376                 {
377                     int intIndex = 0;
378                     Control lastItem = null;
379 
380                     int intSourceCount = 0;
381                     if (m_dataSource is DataTable)
382                     {
383                         intSourceCount = (m_dataSource as DataTable).Rows.Count;
384                     }
385                     else if (typeof(IList).IsAssignableFrom(m_dataSource.GetType()))
386                     {
387                         intSourceCount = (m_dataSource as IList).Count;
388                     }
389 
390                     foreach (Control item in this.panRow.Controls)
391                     {
392 
393 
394                         if (intIndex >= intSourceCount)
395                         {
396                             item.Visible = false;
397                         }
398                         else
399                         {
400                             var row = (item as IDataGridViewRow);
401                             row.IsShowCheckBox = m_isShowCheckBox;
402                             if (m_dataSource is DataTable)
403                             {
404                                 row.DataSource = (m_dataSource as DataTable).Rows[intIndex];
405                             }
406                             else
407                             {
408                                 row.DataSource = (m_dataSource as IList)[intIndex];
409                             }
410                             row.BindingCellData();
411                             item.Height = m_rowHeight;
412                             item.Visible = true;
413                             item.BringToFront();
414                             if (lastItem == null)
415                                 lastItem = item;
416                             Rows.Add(row);
417                         }
418                         intIndex++;
419                     }
420 
421                     if (intIndex < intSourceCount)
422                     {
423                         for (int i = intIndex; i < intSourceCount; i++)
424                         {
425                             IDataGridViewRow row = (IDataGridViewRow)Activator.CreateInstance(m_rowType);
426                             if (m_dataSource is DataTable)
427                             {
428                                 row.DataSource = (m_dataSource as DataTable).Rows[i];
429                             }
430                             else
431                             {
432                                 row.DataSource = (m_dataSource as IList)[i];
433                             }
434                             row.Columns = m_columns;
435                             List<Control> lstCells = new List<Control>();
436                             row.IsShowCheckBox = m_isShowCheckBox;
437                             row.ReloadCells();
438                             row.BindingCellData();
439 
440 
441                             Control rowControl = (row as Control);
442                             rowControl.Height = m_rowHeight;
443                             this.panRow.Controls.Add(rowControl);
444                             rowControl.Dock = DockStyle.Top;
445                             row.CellClick += (a, b) => { SetSelectRow(rowControl, b); };
446                             row.CheckBoxChangeEvent += (a, b) => { SetSelectRow(rowControl, b); };
447                             row.SourceChanged += RowSourceChanged;
448                             rowControl.BringToFront();
449                             Rows.Add(row);
450 
451                             if (lastItem == null)
452                                 lastItem = rowControl;
453                         }
454                     }
455                     if (lastItem != null && intSourceCount == m_showCount)
456                     {
457                         lastItem.Height = this.panRow.Height - (m_showCount - 1) * m_rowHeight;
458                     }
459                 }
460             }
461             finally
462             {
463                 ControlHelper.FreezeControl(this.panRow, false);
464             }
465         }
466 
467 
468         /// <summary>
469         /// 快捷键
470         /// </summary>
471         /// <param name="msg"></param>
472         /// <param name="keyData"></param>
473         /// <returns></returns>
474         protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
475         {
476             if (keyData == Keys.Up)
477             {
478                 Previous();
479             }
480             else if (keyData == Keys.Down)
481             {
482                 Next();
483             }
484             else if (keyData == Keys.Home)
485             {
486                 First();
487             }
488             else if (keyData == Keys.End)
489             {
490                 End();
491             }
492             return base.ProcessCmdKey(ref msg, keyData);
493         }
494         /// <summary>
495         /// 选中第一个
496         /// </summary>
497         public void First()
498         {
499             if (Rows == null || Rows.Count <= 0)
500                 return;
501             Control c = null;
502             c = (Rows[0] as Control);
503             SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = 0 });
504         }
505         /// <summary>
506         /// 选中上一个
507         /// </summary>
508         public void Previous()
509         {
510             if (Rows == null || Rows.Count <= 0)
511                 return;
512             Control c = null;
513 
514             int index = Rows.IndexOf(m_selectRow);
515             if (index - 1 >= 0)
516             {
517                 c = (Rows[index - 1] as Control);
518                 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index - 1 });
519             }
520         }
521         /// <summary>
522         /// 选中下一个
523         /// </summary>
524         public void Next()
525         {
526             if (Rows == null || Rows.Count <= 0)
527                 return;
528             Control c = null;
529 
530             int index = Rows.IndexOf(m_selectRow);
531             if (index + 1 < Rows.Count)
532             {
533                 c = (Rows[index + 1] as Control);
534                 SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = index + 1 });
535             }
536         }
537         /// <summary>
538         /// 选中最后一个
539         /// </summary>
540         public void End()
541         {
542             if (Rows == null || Rows.Count <= 0)
543                 return;
544             Control c = null;
545             c = (Rows[Rows.Count - 1] as Control);
546             SetSelectRow(c, new DataGridViewEventArgs() { RowIndex = Rows.Count - 1 });
547         }
548 
549         #endregion
550 
551         #region 事件
552         void RowSourceChanged(object sender, DataGridViewEventArgs e)
553         {
554             if (SourceChanged != null)
555                 SourceChanged(sender, e);
556         }
557         private void SetSelectRow(Control item, DataGridViewEventArgs e)
558         {
559             try
560             {
561                 ControlHelper.FreezeControl(this, true);
562                 if (item == null)
563                     return;
564                 if (item.Visible == false)
565                     return;
566                 this.FindForm().ActiveControl = this;
567                 this.FindForm().ActiveControl = item;
568                 if (m_selectRow != null)
569                 {
570                     if (m_selectRow == item)
571                         return;
572                     m_selectRow.SetSelect(false);
573                 }
574                 m_selectRow = item as IDataGridViewRow;
575                 m_selectRow.SetSelect(true);
576                 if (ItemClick != null)
577                 {
578                     ItemClick(item, e);
579                 }
580                 if (this.panRow.Controls.Count > 0)
581                 {
582                     if (item.Location.Y < 0)
583                     {
584                         this.panRow.AutoScrollPosition = new Point(0, Math.Abs(this.panRow.Controls[this.panRow.Controls.Count - 1].Location.Y) + item.Location.Y);
585                     }
586                     else if (item.Location.Y + m_rowHeight > this.panRow.Height)
587                     {
588                         this.panRow.AutoScrollPosition = new Point(0, Math.Abs(this.panRow.AutoScrollPosition.Y) + item.Location.Y - this.panRow.Height + m_rowHeight);
589                     }
590                 }
591             }
592             finally
593             {
594                 ControlHelper.FreezeControl(this, false);
595             }
596         }
597         private void UCDataGridView_Resize(object sender, EventArgs e)
598         {
599             ResetShowCount();
600             ReloadSource();
601         }
602         #endregion
603     }
604 }

View Code

  1 namespace HZH_Controls.Controls
  2 {
  3     partial class UCDataGridView
  4     {
  5         /// <summary> 
  6         /// 必需的设计器变量。
  7         /// </summary>
  8         private System.ComponentModel.IContainer components = null;
  9 
 10         /// <summary> 
 11         /// 清理所有正在使用的资源。
 12         /// </summary>
 13         /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
 14         protected override void Dispose(bool disposing)
 15         {
 16             if (disposing && (components != null))
 17             {
 18                 components.Dispose();
 19             }
 20             base.Dispose(disposing);
 21         }
 22 
 23         #region 组件设计器生成的代码
 24 
 25         /// <summary> 
 26         /// 设计器支持所需的方法 - 不要
 27         /// 使用代码编辑器修改此方法的内容。
 28         /// </summary>
 29         private void InitializeComponent()
 30         {
 31             this.panHead = new System.Windows.Forms.Panel();
 32             this.panColumns = new System.Windows.Forms.TableLayoutPanel();
 33             this.ucSplitLine_H1 = new HZH_Controls.Controls.UCSplitLine_H();
 34             this.panRow = new System.Windows.Forms.Panel();
 35             this.panPage = new System.Windows.Forms.Panel();
 36             this.panHead.SuspendLayout();
 37             this.SuspendLayout();
 38             // 
 39             // panHead
 40             // 
 41             this.panHead.Controls.Add(this.panColumns);
 42             this.panHead.Controls.Add(this.ucSplitLine_H1);
 43             this.panHead.Dock = System.Windows.Forms.DockStyle.Top;
 44             this.panHead.Location = new System.Drawing.Point(0, 0);
 45             this.panHead.Name = "panHead";
 46             this.panHead.Size = new System.Drawing.Size(1061, 40);
 47             this.panHead.TabIndex = 0;
 48             // 
 49             // panColumns
 50             // 
 51             this.panColumns.ColumnCount = 1;
 52             this.panColumns.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));
 53             this.panColumns.Dock = System.Windows.Forms.DockStyle.Fill;
 54             this.panColumns.Location = new System.Drawing.Point(0, 0);
 55             this.panColumns.Name = "panColumns";
 56             this.panColumns.RowCount = 1;
 57             this.panColumns.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
 58             this.panColumns.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
 59             this.panColumns.Size = new System.Drawing.Size(1061, 39);
 60             this.panColumns.TabIndex = 1;
 61             // 
 62             // ucSplitLine_H1
 63             // 
 64             this.ucSplitLine_H1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
 65             this.ucSplitLine_H1.Dock = System.Windows.Forms.DockStyle.Bottom;
 66             this.ucSplitLine_H1.Location = new System.Drawing.Point(0, 39);
 67             this.ucSplitLine_H1.Name = "ucSplitLine_H1";
 68             this.ucSplitLine_H1.Size = new System.Drawing.Size(1061, 1);
 69             this.ucSplitLine_H1.TabIndex = 0;
 70             this.ucSplitLine_H1.TabStop = false;
 71             // 
 72             // panRow
 73             // 
 74             this.panRow.AutoScroll = true;
 75             this.panRow.Dock = System.Windows.Forms.DockStyle.Fill;
 76             this.panRow.Location = new System.Drawing.Point(0, 40);
 77             this.panRow.Name = "panRow";
 78             this.panRow.Size = new System.Drawing.Size(1061, 475);
 79             this.panRow.TabIndex = 1;
 80             // 
 81             // panPage
 82             // 
 83             this.panPage.Dock = System.Windows.Forms.DockStyle.Bottom;
 84             this.panPage.Location = new System.Drawing.Point(0, 515);
 85             this.panPage.Name = "panPage";
 86             this.panPage.Size = new System.Drawing.Size(1061, 50);
 87             this.panPage.TabIndex = 0;
 88             this.panPage.Visible = false;
 89             // 
 90             // UCDataGridView
 91             // 
 92             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
 93             this.BackColor = System.Drawing.Color.White;
 94             this.Controls.Add(this.panRow);
 95             this.Controls.Add(this.panPage);
 96             this.Controls.Add(this.panHead);
 97             this.Name = "UCDataGridView";
 98             this.Size = new System.Drawing.Size(1061, 565);
 99             this.Resize += new System.EventHandler(this.UCDataGridView_Resize);
100             this.panHead.ResumeLayout(false);
101             this.ResumeLayout(false);
102 
103         }
104 
105         #endregion
106 
107         private System.Windows.Forms.Panel panHead;
108         private System.Windows.Forms.TableLayoutPanel panColumns;
109         private UCSplitLine_H ucSplitLine_H1;
110         private System.Windows.Forms.Panel panRow;
111         private System.Windows.Forms.Panel panPage;
112 
113     }
114 }

View Code

如果你仔细看，你会发现行我用了类型进行传入，当你需要更丰富的行内容的时候，可以自定义行控件，然后通过RowType属性传入

分页控件我使用了分页控件基类UCPagerControlBase，这样做的好处就是你同样可以扩展分页控件

用处及效果

调用示例

 1  List<DataGridViewColumnEntity> lstCulumns = new List<DataGridViewColumnEntity>();
 2             lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "ID", HeadText = "编号", Width = 70, WidthType = SizeType.Absolute });
 3             lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Name", HeadText = "姓名", Width = 50, WidthType = SizeType.Percent });
 4             lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Age", HeadText = "年龄", Width = 50, WidthType = SizeType.Percent });
 5             lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Birthday", HeadText = "生日", Width = 50, WidthType = SizeType.Percent, Format = (a) => { return ((DateTime)a).ToString("yyyy-MM-dd"); } });
 6             lstCulumns.Add(new DataGridViewColumnEntity() { DataField = "Sex", HeadText = "性别", Width = 50, WidthType = SizeType.Percent, Format = (a) => { return ((int)a) == 0 ? "女" : "男"; } });
 7             this.ucDataGridView1.Columns = lstCulumns;
 8             this.ucDataGridView1.IsShowCheckBox = true;
 9             List<object> lstSource = new List<object>();
10             for (int i = 0; i < 200; i++)
11             {
12                 TestModel model = new TestModel()
13                 {
14                     ID = i.ToString(),
15                     Age = 3 * i,
16                     Name = "姓名——" + i,
17                     Birthday = DateTime.Now.AddYears(-10),
18                     Sex = i % 2
19                 };
20                 lstSource.Add(model);
21             }
22 
23             var page = new UCPagerControl2();
24             page.DataSource = lstSource;
25             this.ucDataGridView1.Page = page;
26             this.ucDataGridView1.First();

如果使用分页控件，则将数据源指定给分页控件，否则直接指定给表格控件数据源

最后的话

如果你喜欢的话，请到 https://gitee.com/kwwwvagaa/net_winform_custom_control 点个星星吧

posted @ 2019-08-16 16:27 冰封一夏阅读(22908) 评论(8) 编辑收藏举报

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（三十二）c#Winform自定义控件-表格-HZHControls

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