ASP.NET 页面中动态增加的控件、添加事件第1/2页

private void Page_Load(object sender, System.EventArgs e)
{
Button Button1 = new Button();
Button1.CommandArgument = "b1";
Button1.Text = "Btn1";
Button1.Command += new CommandEventHandler(this.OnButton);
PlaceHolder1.Controls.Add(Button1);
Button Button2 = new Button();
Button2.CommandArgument = "b2";
Button2.Text = "Btn2";
Button2.Command += new CommandEventHandler(this.OnButton);
PlaceHolder1.Controls.Add(Button2);
Control c3 = ParseControl("<asp:Button id='Button3' text='Btn3' commandname='Btn' commandargument='b3' runat='server' />"); //将字符串转换成web控件
Control c4 = ParseControl("<asp:Button id='Button4' text='Btn4' commandname='Btn' commandargument='b4' runat='server' />");
PlaceHolder1.Controls.Add(c3);
PlaceHolder1.Controls.Add(c4);
Button myBut = (Button)Page.FindControl("Button3");
myBut.Command += new CommandEventHandler(this.OnButton);
Button myBut2 = (Button)Page.FindControl("Button4");
myBut2.Command += new CommandEventHandler(this.OnButton);

}
public void OnButton(Object Sender, CommandEventArgs e)
{
switch (e.CommandArgument.ToString().ToLower())
{
case "b1":
Label1.Text = "Button 1";
break;
case "b2":
Label1.Text = "Button 2";
break;
case "b3":
Label1.Text = "Button 3";
break;
case "b4":
Label1.Text = "Button 4";
break;
};
}

Control.Command += new CommandEventHandler(this.EventFun);

protected void Page_Load(object sender, EventArgs e)
{
//将输入字符串分析为System.Web.UI.Control对象,b为传进去的值
Control c = ParseControl("<asp:Button Text = '按我' ID = 'myButton' commandargument = 'b' runat = 'server' />");

//将控件添加大Panel中
this.Panel1.Controls.Add(c);

//查找页面名为myButton的控件
Button Button = (Button)Page.FindControl("myButton");

//添加事件On_Button
Button.Command += new CommandEventHandler(this.On_Button);

}

//CommandEventArgs为command事件提供数据
protected void On_Button(Object sender,CommandEventArgs e)
{
Response.Write("<script language = 'javascript' type = 'text/javascript'><!--
alert('" + e.CommandArgument.ToString() + "');
// --></script>");
}