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

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Ajax

This is a migrated thread and some comments may be shown as answers.

Chetan asked on 04 Feb 2016, 08:48 PM

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>

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

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