自己绘制DataGrid控件

winForm下的DataGrid控件存在很多不足之处,为了完善其控件,这里稍微重写了一下
可以按照这个思路去实现自己需要的功能,具体代码如下:

  1 using System;
  2 using System.ComponentModel;
  3 using System.Collections;
  4 using System.Diagnostics;
  5 
  6 namespace DataCenter
  7 {
  8     public delegate void MouseDownHandler(Object sender, System.Windows.Forms.MouseEventArgs e);
  9     /// <summary>
 10     /// ComGrid 的摘要说明。
 11     /// </summary>
 12     public class ComGrid : System.Windows.Forms.DataGrid
 13     {          
 14         public  event MouseDownHandler ClickWhere;        
 15 
 16         public  void OnMouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
 17         {
 18             if (ClickWhere!=null)
 19                 ClickWhere(this,e);
 20             System.Windows.Forms.DataGrid myGrid = (System.Windows.Forms.DataGrid)sender;        
 21             
 22              System.Windows.Forms.DataGrid.HitTestInfo hti = myGrid.HitTest(e.X, e.Y);            
 23 
 24             switch (hti.Type) 
 25             {
 26                 case System.Windows.Forms.DataGrid.HitTestType.None :
 27                     System.Windows.Forms.MessageBox.Show("the background");
 28                     break;
 29                 default:
 30                 System.Windows.Forms.MessageBox.Show("degault");
 31                     break;
 32             }    
 33         }        
 34         public ComGrid(System.ComponentModel.IContainer container)
 35         {
 36             //
 37             // Windows.Forms 类撰写设计器支持所必需的
 38             //        
 39             InitializeComponent();
 40             //
 41             // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
 42             //
 43         }
 44 
 45         public ComGrid()
 46         {
 47             //
 48             // Windows.Forms 类撰写设计器支持所必需的
 49             //
 50             InitializeComponent();
 51             // MouseDown +=  new MouseDownHandler();
 52 
 53             //
 54             // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
 55             //
 56         }
 57         public void ShowMenu(string strString)
 58         {
 59             System.Windows.Forms.MessageBox.Show(strString);
 60         }
 61         #region 组件设计器生成的代码
 62         /// <summary>
 63         /// 设计器支持所需的方法 - 不要使用代码编辑器修改此方法的内容。
 64         /// </summary>
 65         private void InitializeComponent()
 66         {
 67              
 68         }
 69         #endregion
 70     }
 71 
 72     public class Oversight //监视DataGrid_Click()
 73     {
 74         public Oversight()
 75         {
 76         }
 77         public void ShowMenu(object sender,System.Windows.Forms.MouseEventArgs e)
 78         {
 79             try
 80             {
 81                 ComGrid cgComGrid = ( YJDSoft.DataCenter.Grid.ComGrid)sender;
 82             
 83                 //    System.Threading.Thread.Sleep(500);
 84 
 85                 
 86                             
 87                             
 88                 System.Windows.Forms.DataGrid myGrid = (System.Windows.Forms.DataGrid) sender;
 89             
 90             
 91                 System.Windows.Forms.DataGrid.HitTestInfo hti = myGrid.HitTest(e.X, e.Y);
 92                 string message = "You clicked ";
 93 
 94                 switch (hti.Type) 
 95                 {
 96                     case System.Windows.Forms.DataGrid.HitTestType.None :
 97                         message += "the background.";
 98                         break;
 99                     case System.Windows.Forms.DataGrid.HitTestType.Cell :
100                         message += "cell at row " + hti.Row + ", col " + hti.Column;
101                         break;
102                     case System.Windows.Forms.DataGrid.HitTestType.ColumnHeader :
103                         message += "the column header for column " + hti.Column;
104                         break;
105                     case System.Windows.Forms.DataGrid.HitTestType.RowHeader :
106                         message += "the row header for row " + hti.Row;
107 //                        if(e.Button == MouseButtons.Right)
108 //                        {   
109 //                            this.conMenu.Show(dgDataGrid,new System.Drawing.Point(e.X,e.Y));
110 //                        }
111                         break;
112                     case System.Windows.Forms.DataGrid.HitTestType.ColumnResize :
113                         message += "the column resizer for column " + hti.Column;
114                         break;
115                     case System.Windows.Forms.DataGrid.HitTestType.RowResize :
116                         message += "the row resizer for row " + hti.Row;
117                         break;
118                     case System.Windows.Forms.DataGrid.HitTestType.Caption :
119                         message += "the caption";
120                         break;
121                     case System.Windows.Forms.DataGrid.HitTestType.ParentRows :
122                         message += "the parent row";
123                         break;
124                 }
125         cgComGrid.ShowMenu(message);
126 
127             }
128             catch(Exception err)
129             {
130                 DocCenter.formDocMain.Global_DocManagerLog.LogException(err);
131             }
132         }
133     }
134 }
135