去掉IPostBackDataHandler后,RaisePostBackEvent就执行了,为什么?
控件的源码如下:
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
namespace TestMyRaise
{
/// <summary>
/// RaiseTest 的摘要说明。
/// </summary>
[DefaultProperty("Text"),
ToolboxData("<{0}:RaiseTest runat=server></{0}:RaiseTest>")]
public class RaiseTest : System.Web.UI.WebControls.WebControl,INamingContainer,IPostBackEventHandler,IPostBackDataHandler
{
private string text;
public event EventHandler Click;
[Bindable(true),
Category("Appearance"),
DefaultValue("")]
public string Text
{
get
{
return text;
}
set
{
text = value;
}
}
public override bool EnableViewState
{
get{return base.EnableViewState;}
set{base.EnableViewState=true;}
}
protected virtual void OnClick(EventArgs e)
{
// EventHandler handler1=(EventHandler)base.Events[RaiseTest.EventClick];
// if(handler1!=null)
// {
// handler1(this,new EventArgs());
// }
if(Click!=null)
{
Click(this,e);
}
}
protected override void Render(HtmlTextWriter writer)
{
writer.Write("<input type=button value='clickme' id={0} onclick={1} />",UniqueID,Page.GetPostBackEventReference(this));
}
/// <summary>
/// 将此控件呈现给指定的输出参数。
/// </summary>
/// <param name="output"> 要写出到的 HTML 编写器 </param>
// protected override void RenderContents(HtmlTextWriter writer)
// {
//// writer.WriteBeginTag("input");
//// writer.WriteAttribute("type","submit");
//// writer.WriteAttribute("id",UniqueID);
//// writer.WriteAttribute("name",UniqueID);
//// writer.Write(" />");
//// writer.Write(Text);
//
// }
IPostBackDataHandler 成员
IPostBackEventHandler 成员
}
}
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
namespace TestMyRaise
{
/// <summary>
/// RaiseTest 的摘要说明。
/// </summary>
[DefaultProperty("Text"),
ToolboxData("<{0}:RaiseTest runat=server></{0}:RaiseTest>")]
public class RaiseTest : System.Web.UI.WebControls.WebControl,INamingContainer,IPostBackEventHandler,IPostBackDataHandler
{
private string text;
public event EventHandler Click;
[Bindable(true),
Category("Appearance"),
DefaultValue("")]
public string Text
{
get
{
return text;
}
set
{
text = value;
}
}
public override bool EnableViewState
{
get{return base.EnableViewState;}
set{base.EnableViewState=true;}
}
protected virtual void OnClick(EventArgs e)
{
// EventHandler handler1=(EventHandler)base.Events[RaiseTest.EventClick];
// if(handler1!=null)
// {
// handler1(this,new EventArgs());
// }
if(Click!=null)
{
Click(this,e);
}
}
protected override void Render(HtmlTextWriter writer)
{
writer.Write("<input type=button value='clickme' id={0} onclick={1} />",UniqueID,Page.GetPostBackEventReference(this));
}
/// <summary>
/// 将此控件呈现给指定的输出参数。
/// </summary>
/// <param name="output"> 要写出到的 HTML 编写器 </param>
// protected override void RenderContents(HtmlTextWriter writer)
// {
//// writer.WriteBeginTag("input");
//// writer.WriteAttribute("type","submit");
//// writer.WriteAttribute("id",UniqueID);
//// writer.WriteAttribute("name",UniqueID);
//// writer.Write(" />");
//// writer.Write(Text);
//
// }
IPostBackDataHandler 成员
IPostBackEventHandler 成员
}
}
调用的页面Test1.aspx如下:
<%@ Register TagPrefix="Ra" Namespace="TestMyRaise" Assembly="TestMyRaise"%>
<%@ Page language="c#" Codebehind="Test1.aspx.cs" AutoEventWireup="false" Inherits="Test5.RaiseTest.Test1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Test1</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<Ra:RaiseTest runat="server" id="RaiseTest1" />
</form>
</body>
</HTML>
<%@ Page language="c#" Codebehind="Test1.aspx.cs" AutoEventWireup="false" Inherits="Test5.RaiseTest.Test1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Test1</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<Ra:RaiseTest runat="server" id="RaiseTest1" />
</form>
</body>
</HTML>
Test1.aspx.cs:
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace Test5.RaiseTest
{
/// <summary>
/// Test1 的摘要说明。
/// </summary>
public class Test1 : System.Web.UI.Page
{
protected TestMyRaise.RaiseTest RaiseTest1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
}
Web 窗体设计器生成的代码
private void RaiseTest1_Click(object sender, System.EventArgs e)
{
Response.Write("Test");
}
}
}
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace Test5.RaiseTest
{
/// <summary>
/// Test1 的摘要说明。
/// </summary>
public class Test1 : System.Web.UI.Page
{
protected TestMyRaise.RaiseTest RaiseTest1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
}
Web 窗体设计器生成的代码
private void RaiseTest1_Click(object sender, System.EventArgs e)
{
Response.Write("Test");
}
}
}