RaisePostBackEvent(string eventArgument)
说明:回调方法
参数:eventArgument,返回客户端回调参数值
Page.ClientScript.GetPostBackEventReference(control,string)
说明:客户端指定页面control控件中使用string字符串,以便回调回服务器
参数:control,实现PostBackOptions类,如控件,一般用this
string,指定字符串值
示例:
类文件:
注:
当UseSubmitBehavior 属性为 false 时,GetPostBackEventReference方法可以与Button控件一起使用
调用自定义控件则如下
说明:回调方法
参数:eventArgument,返回客户端回调参数值
Page.ClientScript.GetPostBackEventReference(control,string)
说明:客户端指定页面control控件中使用string字符串,以便回调回服务器
参数:control,实现PostBackOptions类,如控件,一般用this
string,指定字符串值
示例:
类文件:
using System;
using System.Web.UI;
using System.Collections;
using System.Collections.Specialized;
namespace CustomControls
{
public class MyButton : Control, IPostBackEventHandler
{
private int i = 0;
//回调函数,回调参数值:eventArgument
public void RaisePostBackEvent(string eventArgument)
{
Context.Response.Write("第"+eventArgument+"次点击");
i = int.Parse(eventArgument);
}
//控件呈现,Control类重写,传送参数至客户端
protected override void Render(HtmlTextWriter output)
{
output.Write("<input type=\"button\" name = " + this.UniqueID +
" Value = 'Click Me' onclick=\"javascript:"+Page.ClientScript.GetPostBackEventReference(this,(i+1).ToString())+"\"/>");
}
}
}
调用控件页面:using System.Web.UI;
using System.Collections;
using System.Collections.Specialized;
namespace CustomControls
{
public class MyButton : Control, IPostBackEventHandler
{
private int i = 0;
//回调函数,回调参数值:eventArgument
public void RaisePostBackEvent(string eventArgument)
{
Context.Response.Write("第"+eventArgument+"次点击");
i = int.Parse(eventArgument);
}
//控件呈现,Control类重写,传送参数至客户端
protected override void Render(HtmlTextWriter output)
{
output.Write("<input type=\"button\" name = " + this.UniqueID +
" Value = 'Click Me' onclick=\"javascript:"+Page.ClientScript.GetPostBackEventReference(this,(i+1).ToString())+"\"/>");
}
}
}
<%@ Register TagPrefix="CustomControl" Namespace="CustomControls" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<CustomControl:MyButton runat="server" ID="Button">
</CustomControl:MyButton>
</div>
</form>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<CustomControl:MyButton runat="server" ID="Button">
</CustomControl:MyButton>
</div>
</form>
</body>
</html>
注:
当UseSubmitBehavior 属性为 false 时,GetPostBackEventReference方法可以与Button控件一起使用
<%@ Register TagPrefix="CustomControl" Namespace="CustomControls" %>
注册使用自定义控件,TagPrefix指定控件前缀,Namespace指定控件所在命名空间调用自定义控件则如下
<TagPrefix指定名称:自定义控件类名></TagPrefix指定名称:自定义控件类名>
地址
http://www.cnblogs.com/ywkpl/archive/2007/12/14/995592.html