【NET】Winform分页控件初探
1 public partial class WinFormPager : UserControl 2 { 3 const int PAGE_INDEX_START = 1; 4 /// <summary> 5 /// 当前页 6 /// </summary> 7 public int CurrentPage 8 { 9 get; 10 set; 11 } 12 /// <summary> 13 /// 每页显示条数 14 /// </summary> 15 [Description("每页显示条数"), Category("分页设置"), DefaultValue(10)] 16 public int PageSize 17 { 18 get; 19 set; 20 } 21 /// <summary> 22 /// 总共多少页 23 /// </summary> 24 public int PageTotal 25 { 26 get; 27 set; 28 } 29 int recordCount; 30 public int RecordCount 31 { 32 get { 33 return recordCount; 34 } 35 set { 36 recordCount = value; 37 SetBtnPrePageAndBtnNextPage(); 38 } 39 } 40 41 private Label lbMsg; 42 private LinkLabel llFirst; 43 private LinkLabel llPrev; 44 private LinkLabel llNext; 45 private LinkLabel llLast;//按钮间距离 46 47 public delegate void PageChangeDelegate(); 48 /// <summary> 49 /// 当前页改变时发生的事件 50 /// </summary> 51 [Description("当前页改变时发生的事件"), Category("分页设置")] 52 public event PageChangeDelegate PageChanged; 53 public WinFormPager() 54 { 55 InitializeComponent(); 56 } 57 58 /// <summary> 59 /// 设置上一页、下一页是否可用以及当前页按钮字体颜色 60 /// </summary> 61 public void SetBtnPrePageAndBtnNextPage() 62 { 63 64 if (recordCount == 0) 65 { 66 llFirst.Enabled = llPrev.Enabled = llNext.Enabled = llLast.Enabled = false; 67 } 68 else 69 { 70 PageTotal = Convert.ToInt32(Math.Ceiling(RecordCount * 1.0 / PageSize));//总共多少页 71 if (CurrentPage == PAGE_INDEX_START) 72 { 73 llFirst.Enabled = llPrev.Enabled = false; 74 } 75 else 76 { 77 llFirst.Enabled = llPrev.Enabled = true; 78 } 79 80 if (CurrentPage == PageTotal) 81 { 82 llNext.Enabled = llLast.Enabled = false; 83 } 84 else 85 { 86 llNext.Enabled = llLast.Enabled = true; 87 } 88 } 89 this.lbMsg.Text = string.Format(this.lbMsg.Tag.ToString(), RecordCount, PageSize, CurrentPage, PageTotal); 90 } 91 92 93 private void InitializeComponent() 94 { 95 this.lbMsg = new System.Windows.Forms.Label(); 96 this.llFirst = new System.Windows.Forms.LinkLabel(); 97 this.llPrev = new System.Windows.Forms.LinkLabel(); 98 this.llNext = new System.Windows.Forms.LinkLabel(); 99 this.llLast = new System.Windows.Forms.LinkLabel(); 100 this.SuspendLayout(); 101 // 102 // lbMsg 103 // 104 this.lbMsg.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left))); 105 this.lbMsg.AutoSize = true; 106 this.lbMsg.Location = new System.Drawing.Point(12, 9); 107 this.lbMsg.Name = "lbMsg"; 108 this.lbMsg.Size = new System.Drawing.Size(215, 19); 109 this.lbMsg.TabIndex = 0; 110 this.lbMsg.Tag = "共{0}条 {1}条/页 当前第{2}页/{3}页"; 111 this.lbMsg.Text = "共{0}条 {1}条/页 当前第{2}页/{3}页"; 112 this.lbMsg.UseCompatibleTextRendering = true; 113 // 114 // llFirst 115 // 116 this.llFirst.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right))); 117 this.llFirst.AutoSize = true; 118 this.llFirst.Location = new System.Drawing.Point(279, 9); 119 this.llFirst.Name = "llFirst"; 120 this.llFirst.Size = new System.Drawing.Size(29, 12); 121 this.llFirst.TabIndex = 1; 122 this.llFirst.TabStop = true; 123 this.llFirst.Text = "首页"; 124 this.llFirst.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.llFirst_LinkClicked); 125 // 126 // llPrev 127 // 128 this.llPrev.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right))); 129 this.llPrev.AutoSize = true; 130 this.llPrev.Location = new System.Drawing.Point(314, 9); 131 this.llPrev.Name = "llPrev"; 132 this.llPrev.Size = new System.Drawing.Size(41, 12); 133 this.llPrev.TabIndex = 2; 134 this.llPrev.TabStop = true; 135 this.llPrev.Text = "上一页"; 136 this.llPrev.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.llPrev_LinkClicked); 137 // 138 // llNext 139 // 140 this.llNext.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right))); 141 this.llNext.AutoSize = true; 142 this.llNext.Location = new System.Drawing.Point(361, 9); 143 this.llNext.Name = "llNext"; 144 this.llNext.Size = new System.Drawing.Size(41, 12); 145 this.llNext.TabIndex = 3; 146 this.llNext.TabStop = true; 147 this.llNext.Text = "下一页"; 148 this.llNext.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.llNext_LinkClicked); 149 // 150 // llLast 151 // 152 this.llLast.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right))); 153 this.llLast.AutoSize = true; 154 this.llLast.Location = new System.Drawing.Point(408, 9); 155 this.llLast.Name = "llLast"; 156 this.llLast.Size = new System.Drawing.Size(29, 12); 157 this.llLast.TabIndex = 4; 158 this.llLast.TabStop = true; 159 this.llLast.Text = "末页"; 160 this.llLast.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.llLast_LinkClicked); 161 // 162 // WinFormPager 163 // 164 this.Controls.Add(this.llLast); 165 this.Controls.Add(this.llNext); 166 this.Controls.Add(this.llPrev); 167 this.Controls.Add(this.llFirst); 168 this.Controls.Add(this.lbMsg); 169 this.Name = "WinFormPager"; 170 this.Size = new System.Drawing.Size(468, 30); 171 this.ResumeLayout(false); 172 this.PerformLayout(); 173 174 } 175 176 private void llFirst_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) 177 { 178 PageAction(PAGE_INDEX_START); 179 SetBtnPrePageAndBtnNextPage(); 180 } 181 182 public void PageAction(int pageNumOperation) { 183 CurrentPage = pageNumOperation; 184 if (CurrentPage < PAGE_INDEX_START) 185 { 186 CurrentPage = PAGE_INDEX_START; 187 } 188 if (CurrentPage > PageTotal) { 189 CurrentPage = PageTotal; 190 } 191 192 if (PageChanged != null) 193 { 194 PageChanged(); 195 } 196 } 197 198 private void llLast_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) 199 { 200 PageAction(PageTotal); 201 } 202 203 private void llPrev_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) 204 { 205 PageAction(CurrentPage-1); 206 } 207 208 private void llNext_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) 209 { 210 PageAction(CurrentPage + 1); 211 } 212 213 }
调用
public ListViewExtendPager() {//分页List 控件(此控件包含分页控件)构造函数 InitializeComponent(); this.wfpPager.PageSize = 15; this.wfpPager.PageChanged += new WinFormPager.PageChangeDelegate( () => { DataBind(); } ); } public Action<ListViewExtendPager> dataBindAction; private void ListViewExtendPager_Load(object sender, EventArgs e) { this.wfpPager.CurrentPage = 1; DataBind(); } private void DataBind() { if (dataBindAction != null) { dataBindAction(this); } }
