[ASP.NET]button 的动态生成以及触发事件的实现

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摘自 MSDN帮助文档(ms-help://MS.MSDNQTR.v80.chs/MS.MSDN.v80/MS.NETDEVFX.v20.chs/cpref16/html/C_System_Web_UI_WebControls_Button_ctor.htm)

VB.NET代码

<%@ Page Language="VB" AutoEventWireup="True" %>

<html>

<head>

Sub Page_Load(sender As Object, e As EventArgs)

' Create a new Button control.

Dim NewButton As Button = New Button()

NewButton.Text="Click Me"

' Register the event-handling method for the Click event.

AddHandler NewButton.Click, AddressOf Button_Click

' Add the control to the Controls collection of the

' PlaceHolder control.

Place.Controls.Clear()

Place.Controls.Add(NewButton)

End Sub

Sub Button_Click(sender as Object, e As EventArgs)

Message.Text = "Hello World"

End Sub

</script>

</head>

<body>

<h3> Button Constructor Example </h3>

<asp:Placeholder id="Place"

runat="server"/>

<asp:Label id="Message"

runat="server"/>

</form>

</body>

</html>

C#代码

<%@ Page Language="C#" AutoEventWireup="True" %>

<html>

<head>

void Page_Load(Object sender, EventArgs e)

{

// Create a new Button control.

Button NewButton = new Button();

NewButton.Text="Click Me";

// Register the event-handling method for the Click event.

NewButton.Click += new EventHandler(this.Button_Click);

// Add the control to the Controls collection of the

// PlaceHolder control.

Place.Controls.Clear();

Place.Controls.Add(NewButton);

}

void Button_Click(Object sender, EventArgs e)

{

Message.Text = "Hello World";

}

</script>

</head>

<body>

<h3> Button Constructor Example </h3>

<asp:Placeholder id="Place"

runat="server"/>

<asp:Label id="Message"

runat="server"/>

</form>

</body>

</html>