Ajaxmanager and ASP:Timer

2 posts, 1 answers
  1. James Shelton-Agar
    James Shelton-Agar avatar
    108 posts
    Member since:
    May 2008

    Posted 10 Jul 2008 Link to this post

    I have a timer and try to update a label ontick using ajaxmanager

    <telerik:AjaxSetting AjaxControlID="TimerUpdate">


    <telerik:AjaxUpdatedControl ControlID="TimerUpdate"/>

    <telerik:AjaxUpdatedControl ControlID="LblWatchList"/>



    It gives me, The method or operation is not implemented. 
    [NotImplementedException: The method or operation is not implemented.]
       System.Web.UI.Timer.set_Visible(Boolean value) +54

    it seems like RADAjaxmanager is trying to set visiability of a control regardless it has a visiable property or not, and it through an exception.

    do i have to put them into RADAjaxPanel? thanx

  2. Answer
    Konstantin Petkov
    Konstantin Petkov avatar
    1911 posts

    Posted 11 Jul 2008 Link to this post

    Hi James,

    Indeed, the ASP:Timer's Visible setter is not implemented. The simplest solution is to wrap the timer into an always visible parent and update it instead. Find below a sample code:

    <%@ Page Language="C#" %> 
    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %> 
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
    <script runat="server"
        protected void Timer1_Tick(object sender, EventArgs e) 
            Label1.Text = (Int32.Parse(Label1.Text) + 1).ToString(); 
    <html xmlns="http://www.w3.org/1999/xhtml" > 
    <head runat="server"
        <title>Untitled Page</title> 
        <form id="form1" runat="server"
            <asp:ScriptManager ID="ScriptManager1" runat="server"
            <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server"
                    <telerik:AjaxSetting AjaxControlID="Timer1"
                            <telerik:AjaxUpdatedControl ControlID="Panel1" /> 
            <asp:Panel ID="Panel1" runat="server"
                <asp:Timer ID="Timer1" runat="server" OnTick="Timer1_Tick" Interval="1000"></asp:Timer> 
                <asp:Label ID="Label1" runat="server" Text="0"></asp:Label> 

    All the best,
    Konstantin Petkov
    the Telerik team

    Instantly find answers to your questions at the new Telerik Support Center
  3. UI for ASP.NET Ajax is Ready for VS 2017
Back to Top