前台
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Ajax_CallBackExample : System.Web.UI.Page,System.Web.UI.ICallbackEventHandler
{
private string result;
protected void Page_Load(object sender, EventArgs e)
{
}
public void RaiseCallbackEvent(string eventArgument)
{
result = "return from server "+eventArgument;
}
public string GetCallbackResult()
{
return result;
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="CallBackExample.aspx.cs" Inherits="Ajax_CallBackExample" %>
<!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>
<script type="text/javascript">
function CallServer(inputcontrol,context)
{
context.innerHTML="Loading
..";
arg=inputcontrol.value;
<%= ClientScript.GetCallbackEventReference(this, "arg", "ReceiveServerData", "context")%>;
}
function ReceiveServerData(result,context)
{
context.innerHTML=result;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<input id="Button1" type="button" onclick="CallServer(TextBox1,Label1)" value="button" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</div>
</form>
</body>
</html>
<head runat="server">
<title>无标题页</title>
<script type="text/javascript">
function CallServer(inputcontrol,context)
{
context.innerHTML="Loading
..";arg=inputcontrol.value;
<%= ClientScript.GetCallbackEventReference(this, "arg", "ReceiveServerData", "context")%>;
}
function ReceiveServerData(result,context)
{
context.innerHTML=result;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<input id="Button1" type="button" onclick="CallServer(TextBox1,Label1)" value="button" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</div>
</form>
</body>
</html>
using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class Ajax_CallBackExample : System.Web.UI.Page,System.Web.UI.ICallbackEventHandler{
private string result; protected void Page_Load(object sender, EventArgs e) {
} public void RaiseCallbackEvent(string eventArgument) { result = "return from server "+eventArgument; } public string GetCallbackResult() { return result; }}ASP.NET 2.0客户端回调功能实现