ICallbackEventHandler 接口：用于指示控件可以作为服务器的回调事件的目标。
asp.net页面通实现该接口可以实现无刷新回发。
后台：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default2 : System.Web.UI.Page, ICallbackEventHandler
{
private string ttt;
protected void Page_Load(object sender, EventArgs e)
{
ClientScriptManager csm = this.ClientScript;
string t = csm.GetCallbackEventReference(this, "arg", "test", "context");//生成客户端的回发函数，注意此处的arg,context.要与下行中的注册js函数的参数相同
csm.RegisterStartupScript(this.GetType(), "x", "function gml(arg,context){" + t + "}", true);
}
public string GetCallbackResult()
{
return ttt;
}
public void RaiseCallbackEvent(string eventArgument)
{
ttt = "OK" + eventArgument;
}
}
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default2 : System.Web.UI.Page, ICallbackEventHandler
{
private string ttt;
protected void Page_Load(object sender, EventArgs e)
{
ClientScriptManager csm = this.ClientScript;
string t = csm.GetCallbackEventReference(this, "arg", "test", "context");//生成客户端的回发函数，注意此处的arg,context.要与下行中的注册js函数的参数相同
csm.RegisterStartupScript(this.GetType(), "x", "function gml(arg,context){" + t + "}", true);
}
public string GetCallbackResult()
{
return ttt;
}
public void RaiseCallbackEvent(string eventArgument)
{
ttt = "OK" + eventArgument;
}
}
前台代码：
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript">
function test(re,context) {
alert(re);
alert(context);
}
function clicktest() {
gml("txt","x");
}
</script>
<style type="text/css">
#t
{
position:absolute;
width:500px;
height:300px;
background-color:blue;
}
</style>
</head>
<body>
<form id="form1" runat="server">
</form>
<div id="t">
<a onclick="clicktest()">about</a>
</div>
</body>
</html>
<head runat="server">
<title></title>
<script type="text/javascript">
function test(re,context) {
alert(re);
alert(context);
}
function clicktest() {
gml("txt","x");
}
</script>
<style type="text/css">
#t
{
position:absolute;
width:500px;
height:300px;
background-color:blue;
}
</style>
</head>
<body>
<form id="form1" runat="server">
</form>
<div id="t">
<a onclick="clicktest()">about</a>
</div>
</body>
</html>