simultaneous calls are not allowed in a partial rendering page : UpdateProgress « ASP.net Controls « ASP.NET Tutorial






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  3. UpdateProgress
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" 
    Inherits="Default"%>

<!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>Using the Timer control</title>
</head>
<body>
    <div id="pageContent">
        <form id="form1" runat="server">
            <asp:ScriptManager ID="ScriptManager1" runat="server" />
            
            <asp:Timer ID="Timer1" runat="server" Enabled="true" Interval="1000" 
                ontick="Timer1_Tick" />

            <asp:Button ID="Button1" runat="server" Text="Start task" 
                onclick="Button1_Click" />
                
            <asp:UpdateProgress ID="UpdateProgress1" runat="server" DynamicLayout="false">
                <ProgressTemplate> 
                    <br />
                    <img src="loading.gif" />
                </ProgressTemplate>
            </asp:UpdateProgress>

            <asp:UpdatePanel ID="UpdatePanel1" runat="server">
                <ContentTemplate>
                    <asp:Label ID="Label1" runat="server" />
                </ContentTemplate>
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
                </Triggers>
            </asp:UpdatePanel>

            <hr />

            <h2>
            <asp:UpdatePanel ID="UpdatePanel2" runat="server" RenderMode="Inline">
                <ContentTemplate>
                    <asp:Label ID="Label2" runat="server" />
                </ContentTemplate>
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
                </Triggers>
            </asp:UpdatePanel>
            </h2>
        </form>
    </div>
</body>
</html>

File: Default.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Linq;
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;
using System.Threading;

public partial class Default : System.Web.UI.Page
{
    protected void Timer1_Tick(object sender, EventArgs e)
    {
        Label2.Text = DateTime.Now.ToString();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Thread.Sleep(5000);
        Label1.Text = DateTime.Now.ToString();
    }
}








3.32.UpdateProgress
3.32.1.simultaneous calls are not allowed in a partial rendering page