RadToolTips Disappear on Ajax Update

[John]

Hi,

I'm linking a radtooltip to a panel (actually adding panels and a corresponding radtooltip to the panel in a loop) which is placed inside of a placeholder.  On initial page load it works as expected, but when the page does an Ajax Update on a Timer Tick event, the radtooltips disappear.

code behind:

 public void ShowListings(XmlDocument doc)
    {
        XmlNodeList nodes = doc.GetElementsByTagName("result");

       foreach (XmlNode node in nodes)
        {
   Panel pnl = new Panel();
            pnl.Controls.Add(new LiteralControl("panel"));
            PlaceHolder1.Controls.Add(pnl);

   Telerik.Web.UI.RadToolTip rtt = new Telerik.Web.UI.RadToolTip();
            rtt.Width = pnl.Width;
            rtt.ShowEvent = Telerik.Web.UI.ToolTipShowEvent.OnClick;
            rtt.ShowCallout = true;
            rtt.TargetControlID = pnl.ClientID;
            rtt.Text = "test";
            rtt.RelativeTo = Telerik.Web.UI.ToolTipRelativeDisplay.Element;
            rtt.Animation = Telerik.Web.UI.ToolTipAnimation.Slide;
            rtt.Skin = "Sunset";
            rtt.OffsetY = -12;
            rtt.HideEvent = Telerik.Web.UI.ToolTipHideEvent.ManualClose;
            rtt.HideDelay = 100;
            rtt.ShowDelay = 100;

            PlaceHolder1.Controls.Add(rtt);
}
}

aspx:

<asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>     

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" UpdatePanelsRenderMode="Inline">
<AjaxSettings>
<telerik:AjaxSetting AjaxControlID="Timer1">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="RadAjaxPanel1" LoadingPanelID="LoadingPanel1" />
</UpdatedControls>
</telerik:AjaxSetting>
</AjaxSettings>
</telerik:RadAjaxManager>	<telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" LoadingPanelID="LoadingPanel1">			</telerik:RadAjaxPanel>
<telerik:RadAjaxLoadingPanel ID="LoadingPanel1" runat="server" Skin="Vista"/>
<asp:Panel ID="Panel1" runat="server">
<asp:Timer ID="Timer1" runat="server" Interval="15000" OnTick="Timer1_Tick" />
</asp:Panel>

[Svetlina Anati]

Hello John,

I am not sure why you have used both a RadAjaxPanel and a RadAjaxmanager in your code since having only one of them ensures ajax request. That is actually the reason for the problem - in order to fix it please use one of the following options:

1. Replace the RadAjaxPanel with a standard asp panel and use the RadAjaxmanager for ajaxification as shown below:
   
   

      <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" UpdatePanelsRenderMode="Inline">
               <AjaxSettings>
                   <telerik:AjaxSetting AjaxControlID="Timer1">
                       <UpdatedControls>
                           <telerik:AjaxUpdatedControl ControlID="RadAjaxPanel1" LoadingPanelID="LoadingPanel1" />
                       </UpdatedControls>
                   </telerik:AjaxSetting>
               </AjaxSettings>
           </telerik:RadAjaxManager>
   
           <asp:Panel ID="RadAjaxPanel1" runat="server">
               <asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>
           </asp:Panel>
   
           <telerik:RadAjaxLoadingPanel ID="LoadingPanel1" runat="server" Skin="Vista" />
           <asp:Panel ID="Panel1" runat="server">
               <asp:Timer ID="Timer1" runat="server" Interval="4000" OnTick="Timer1_Tick" />
           </asp:Panel>

2. Remove the RadAjaxmanager declaration and simply move the timer inside the RadAjaxPanel as shown below:
   
   

      <telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" LoadingPanelID="LoadingPanel1">
               <asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>
                 <asp:Panel ID="Panel1" runat="server">
               <asp:Timer ID="Timer1" runat="server" Interval="4000" OnTick="Timer1_Tick" />
           </asp:Panel>
           </telerik:RadAjaxPanel>
           <telerik:RadAjaxLoadingPanel ID="LoadingPanel1" runat="server" Skin="Vista" />
   

I tested both suggestion on my side and they worked as expected.

Regards,
Svetlina
the Telerik team

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