[asp.net教程] 捕捉datagrid的双击事件(c#版本)

以下是c#代码
   
  namespace datagriddoubleclick
  {
   using system;
   using system.drawing;
   using system.collections;
   using system.componentmodel;
   using system.windows.forms;
   using system.data;
   
   public class form1 : system.windows.forms.form
   {
   private system.windows.forms.datagrid datagrid1;
   private dataset mydataset;
   datetime gridmousedowntime;
   private system.windows.forms.label label1;
   
   private system.componentmodel.container components = null;
   
   public form1()
   {
   initializecomponent();
   gridmousedowntime = datetime.now;
   setup();
   }
   
   private void setup()
   {
   // 用2个table和1和relation创建dataset
   makedataset();
   // 数据绑定
   datagrid1.setdatabinding(mydataset, "customers");
   
   //添加样式
   addcustomdatatablestyle();
   }
   
   private void makedataset()
   {
   // 创建dataset.
   mydataset = new dataset("mydataset");
   
   // 创建2个datatables.
   datatable tcust = new datatable("customers");
   
   // 创建两个列，并添加到第一个表
   datacolumn ccustid = new datacolumn("custid");
   datacolumn ccustname = new datacolumn("custname");
   datacolumn ccurrent = new datacolumn("custcity");
   tcust.columns.add(ccustid);
   tcust.columns.add(ccustname);
   tcust.columns.add(ccurrent);
   
   // 把tables添加到dataset.
   mydataset.tables.add(tcust);
   
   
   /* 计算tables.对每个客户，创建datarow变量 */
   datarow newrow1;
   
   // 添加记录到 customers table.
   for(int i = 1; i < 4; i++)
   {
   newrow1 = tcust.newrow();
   newrow1["custid"] = (100*i).tostring();
   tcust.rows.add(newrow1);
   }
   
   tcust.rows[0]["custname"] = "【孟宪会之精彩世界】";
   tcust.rows[1]["custname"] = "net_lover";
   tcust.rows[2]["custname"] = "http://xml.sz.luohuedu.net/";
   
   
   tcust.rows[0]["custcity"] = "北京";
   tcust.rows[1]["custcity"] = "上海";
   tcust.rows[2]["custcity"] = "河南";
   }
   
   private void addcustomdatatablestyle()
   {
   datagridtablestyle ts1 = new datagridtablestyle();
   ts1.mappingname = "customers";
   // 设置属性
   ts1.alternatingbackcolor = color.lightgray;
   
   // 添加textbox列样式，以便我们捕捉鼠标事件
   datagridtextboxcolumn textcol = new datagridtextboxcolumn();
   textcol.mappingname = "custid";
   textcol.headertext = "序号";
   textcol.width = 100;
   
   //添加事件处理器
   textcol.textbox.mousedown += new mouseeventhandler(textboxmousedownhandler);
   textcol.textbox.doubleclick += new eventhandler(textboxdoubleclickhandler);
   ts1.gridcolumnstyles.add(textcol);
   
   textcol = new datagridtextboxcolumn();
   textcol.mappingname = "custname";
   textcol.headertext = "姓名";
   textcol.width = 100;
   //添加事件处理器
   textcol.textbox.mousedown += new mouseeventhandler(textboxmousedownhandler);
   textcol.textbox.doubleclick += new eventhandler(textboxdoubleclickhandler);
   ts1.gridcolumnstyles.add(textcol);
   
   textcol = new datagridtextboxcolumn();
   textcol.mappingname = "custcity";
   textcol.headertext = "地址";
   textcol.width = 100;
   //添加事件处理器
   textcol.textbox.mousedown += new mouseeventhandler(textboxmousedownhandler);
   textcol.textbox.doubleclick += new eventhandler(textboxdoubleclickhandler);
   ts1.gridcolumnstyles.add(textcol);
   
   datagrid1.tablestyles.add(ts1);
   
   }
   
   protected override void dispose( bool disposing )
   {
   if( disposing )
   {
   if (components != null)
   {
   components.dispose();
   }
   }
   base.dispose( disposing );
   }
   
   #region windows form designer generated code
   private void initializecomponent()
   {
   this.datagrid1 = new system.windows.forms.datagrid();
   this.label1 = new system.windows.forms.label();
   ((system.componentmodel.isupportinitialize)(this.datagrid1)).begininit();
   this.suspendlayout();
   //
   // datagrid1
   //
   this.datagrid1.captionbackcolor = system.drawing.systemcolors.info;
   this.datagrid1.captionforecolor = system.drawing.systemcolors.windowtext;
   this.datagrid1.captionvisible = false;
   this.datagrid1.datamember = "";
   this.datagrid1.headerforecolor = system.drawing.systemcolors.controltext;
   this.datagrid1.location = new system.drawing.point(11, 9);
   this.datagrid1.name = "datagrid1";
   this.datagrid1.size = new system.drawing.size(368, 144);
   this.datagrid1.tabindex = 0;
   this.datagrid1.mousedown += new system.windows.forms.mouseeventhandler(this.datagrid1_mousedown);
   //
   // label1
   //
   this.label1.location = new system.drawing.point(4, 166);
   this.label1.name = "label1";
   this.label1.size = new system.drawing.size(383, 23);
   this.label1.tabindex = 1;
   this.label1.textalign = system.drawing.contentalignment.middlecenter;
   this.label1.click += new system.eventhandler(this.form1_click);
   //
   // form1
   //
   this.autoscalebasesize = new system.drawing.size(5, 13);
   this.clientsize = new system.drawing.size(387, 201);
   this.controls.addrange(new system.windows.forms.control[] {

   this.label1,
   this.datagrid1});
   this.name = "form1";
   this.text = "鼠标双击事件的例子";
   ((system.componentmodel.isupportinitialize)(this.datagrid1)).endinit();
   this.resumelayout(false);
   
   }
   #endregion
   
   [stathread]
   static void main()
   {
   application.run(new form1());
   }
   
   private void textboxdoubleclickhandler(object sender, eventargs e)
   {
   messagebox.show("双击事件发生。鼠标双击到的值："+((textbox)sender).text.tostring());
   }
   
   private void textboxmousedownhandler(object sender, mouseeventargs e)
   {
   if(datetime.now < gridmousedowntime.addmilliseconds(systeminformation.doubleclicktime))
   {
   messagebox.show("双击事件发生。鼠标双击到的值："+((textbox)sender).text.tostring());
   }
   label1.text = "textbox 鼠标按下了。 ";
   }
   
   private void datagrid1_mousedown(object sender, system.windows.forms.mouseeventargs e)
   {
   gridmousedowntime = datetime.now;
   label1.text = "datagrid1 鼠标按下了。 ";
   }
   
   private void form1_click(object sender, system.eventargs e)
   {
   label1.text="";
   }
   private void label1_click(object sender, system.eventargs e)
   {
   label1.text="";
   }
   }
  }