当点击按钮之后,先执行OnClientClick事件,将span的内容更改为图片.
OnClick事件执行结束之后,把结果输出给span.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Raw_Default" Debug="true" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxtoolkit" %>
<!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>未命名頁面</title>
<script language="javascript">
function get_back()
{
var msg= document.getElementById("<%=message.ClientID%>");
msg.innerHTML="<img src=\"../images/indicator.gif\" border=\"0\" alt=\"Processing\" width=\"16px\" height=\"16px\" />";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<div>
<span id="message" runat="server">default</span><br />
<br />
<br />
<br />
<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="get_back()" OnClick="Button1_Click" /></div>
</ContentTemplate>
</asp:UpdatePanel>
<!--提交后按钮灰化-->
<ajaxtoolkit:UpdatePanelAnimationExtender ID="UpdatePanelAnimationExtender1" runat="server" TargetControlID="UpdatePanel1">
<Animations>
<OnUpdating>
<Sequence>
<Parallel duration="0">
<EnableAction AnimationTarget="Button1" Enabled="false" />
</Parallel>
</Sequence>
</OnUpdating>
<OnUpdated>
<Sequence>
<Parallel duration="0">
<EnableAction AnimationTarget="Button1" Enabled="true" />
</Parallel>
</Sequence>
</OnUpdated>
</Animations>
</ajaxtoolkit:UpdatePanelAnimationExtender>
</form>
</body>
</html>
CodeBehind代码:
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 Raw_Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
System.Threading.Thread.Sleep(8000);
this.message.InnerText = "Finished";
}
}
效果如图:
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