捕捉DataGrid的双击事件(C#版本)-.NET教程,C#语言

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="";

}

}

}