母版中使用UpdateProgress控件遇到的奇怪问题？！

我在母版中使用UpdateProgress控件，控件的内容都不见显示，页面代码：
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <asp:ScriptManager id="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <asp:UpdatePanel id="UpdatePanel1" runat="server">
        <contenttemplate>
<asp:Label id="Label1" runat="server" Text="Label" __designer:wfdid="w21"></asp:Label> 
</contenttemplate>
    </asp:UpdatePanel>
    <asp:Button ID="btn_1" runat="server" OnClick="Button1_Click" Text="Button" />
    <asp:UpdateProgress id="UpdateProgress1" runat="server" AssociatedUpdatePanelID="UpdatePanel1">
        <progresstemplate>
<IMG src="js/progressbar_long_green.gif" />
</progresstemplate>
    </asp:UpdateProgress>
</asp:Content>
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 Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        System.Threading.Thread.Sleep(3000);
        Label1.Text = "fsadgklasdjglkjasdglj";
    }
}但是如果不用母版，UpdateProgress里面的内容是可以显示出来的，这是什么问题呢？

解决方案 »

  1.   

    <asp:ScriptManager id="ScriptManager1" runat="server" > 
         </asp:ScriptManager > 放置在母页中 不要放置在内容页
      

  2.   

    母页
    <%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
    <%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        Namespace="System.Web.UI" TagPrefix="asp" %><!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>
            <asp:ScriptManager id="ScriptManager1" runat="server">
            </asp:ScriptManager>
            <asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
            </asp:contentplaceholder>
        </div>
        </form>
    </body>
    </html>内容页：<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" Title="Untitled Page" %><%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        Namespace="System.Web.UI" TagPrefix="asp" %>
    <asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
        &nbsp;<asp:UpdatePanel id="UpdatePanel1" runat="server"><contenttemplate>
    <asp:Button id="Button1" runat="server" Text="Button" OnClick="Button1_Click"></asp:Button> <asp:Label id="Label1" runat="server" Text="Label"></asp:Label>
    </contenttemplate>
        </asp:UpdatePanel>
        <asp:UpdateProgress id="UpdateProgress1" runat="server">
            <progresstemplate>
    Loading...
    </progresstemplate>
        </asp:UpdateProgress>
    </asp:Content>
    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 Default2 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {    }
        protected void Button1_Click(object sender, EventArgs e)
        {
            System.Threading.Thread.Sleep(2000);
            Label1.Text = "load over";
        }
    }
      

  3.   

    你的问题可能是在内容页缺少
    <%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        Namespace="System.Web.UI" TagPrefix="asp" %>