利用ICallbackEventHandle实现类似AJAX的无刷新页面
2016-01-29 11:26
利用ICallbackEventHandle实现类似AJAX的无刷新页面,利用ICallbackEventHandle实现类似AJAX的无刷新页面
------ ClientCallback.aspx ------
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ClientCallback.aspx.cs" Inherits="ClientCallback" %
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/ xhtml11.dtd"
<html xmlns="http://www.w3.org/1999/xhtm l"
<head id="Head1" runat="server"
<titleCallback Test</title
<script type="text/javascript"
function ReceiveServerData(receivedStr, context)
{
alert(receivedStr);
}
</script
</head
<body
<form id="form1" runat="server"
<input type="button" value="Callback" onclick="CallServer(’argument’, ’context’)"/<br /
</form
</body
</html-------- ClientCallbacp.aspx.cs -----------
// ClientCallback.aspx.cs
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 ClientCallback : System.Web.UI.Page, System.Web.UI.ICallbackEventHandle r
{
void Page_Load(object sender, EventArgs e)
{
ClientScriptManager cm = Page.ClientScript;
String cbReference = cm.GetCallbackEventReference(this, "arg", "ReceiveServerData", "");
String callbackScript = "function CallServer(arg, context) {" + cbReference + "; }";
cm.RegisterClientScriptBlock(this. GetType(), "CallServer", callbackScript, true);
}
private string returnStr;
//function called by client, executed on server [next]
public void RaiseCallbackEvent(String eventArgument)
{
//do something with return argument
returnStr = eventArgument.ToUpper();
return;
}
//function that sends result?
public string GetCallbackResult()
{
return returnStr;
}
}
客户端用ReceiveServerData接收服务器返回的数据，
&
