RadComboBox not rendered when within ASP panel with initial visisble=false

[Chetan]

RadComboBox not rendered (Rendered as "") when within asp panel with initial visible= false.

The asp panel is set to visible= true when postback is triggered via client using ajaxManager.ajaxRequest('InitialPageLoad'

 

protected void Page_Load(object sender, EventArgs e)
        {
            // register ajax
            Telerik.Web.UI.RadAjaxManager ajaxMgr_CCF =   Telerik.Web.UI.RadAjaxManager.GetCurrent(Page);
            ajaxMgr_CCF.AjaxRequest += new RadAjaxControl.AjaxRequestDelegate(AjaxRequestsForCCF);

}

 

protected void AjaxRequestsForCCF(object sender, AjaxRequestEventArgs e)
       {
           if (e.Argument == "InitialPageLoad")
           {
              pnlWithComboBox.Visible = true;
           }
       }

 

 RadCombobox is always set to visible = true.

The panel has other server side control but they render fine. 

If I set radComboBox1.visible = true then it works fine. But should it automatically render and no need for setting specificly

<asp:Panel ID="pnlWithComboBox" runat="server" visible="false">
        <telerik:RadComboBox ID="radcombobox1" runat="server"                                   Width="123px" RenderMode="Lightweight"                                    OnSelectedIndexChanged="btnSavePlaybackForward_Click" AutoPostBack="true" OnClientSelectedIndexChanged="comboBoxContext">
                                    <Items>
                                        <telerik:RadComboBoxItem Text="1" Value="1" runat="server" />
                                        <telerik:RadComboBoxItem Text="2" Value="2" runat="server" />
                                        <telerik:RadComboBoxItem Text="3" Value="3" runat="server" />
                                    </Items>
                                </telerik:RadComboBox>
                            </asp:Panel>

function initializePage(sender, eventArgs) {                 var ajaxManager = $find('<%= RadAjaxManager.GetCurrent(this.Page).ClientID %>');                 ajaxManager.ajaxRequest('InitialPageLoad');   
          }

<telerik:AjaxSetting AjaxControlID="radAjaxManager1">  
 <UpdatedControls>         
        <telerik:AjaxUpdatedControl ControlID="pnlWithComboBox"  />   
  </UpdatedControls>  
 </telerik:AjaxSetting>

[Maria Ilieva]

Hello,

Please review the answer provided in the ticket you have opened for the same issue.

Regards,
Maria Ilieva
Telerik