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RadAjaxLoadingPanel updates but CascadingDropDown events do not fire

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Ajax

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

Nathan asked on 13 Nov 2012, 02:50 AM

Greetings,

I am new to Telerik (pretty new to asp.net) and cannot figure out why my AXAX CascadingDropDown events do not fire when I wire them up to control my RadAjaxLoadingPanel. The LoadingPanel updates but no SelectedIndexChanged event is call.

My code works when I disable/remove theRadAjaxLoadingPanel

I looked all over for the CascadingDropDown example but no success. I saw that I might need to rebind, but I'm not sure what I'm looking for to do this? Thanks

ASPX Page

<form id="frm1" runat="server" class="" enableviewstate="true">

<telerik:RadScriptManager runat="server" ID="RadScriptManager1">

</telerik:RadScriptManager>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" DefaultLoadingPanelID="RadAjaxLoadingPanel1"

EnablePageHeadUpdate="False" ViewStateMode="Enabled">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="auto_ddlMake">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RadAjaxLoadingPanel1"></telerik:AjaxUpdatedControl>

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="auto_ddlModel">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RadAjaxLoadingPanel1"></telerik:AjaxUpdatedControl>

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="lnkReset" EventName="Click">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RadAjaxLoadingPanel1"></telerik:AjaxUpdatedControl>

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

<asp:DropDownList ID="auto_ddlMake" runat="server" AutoPostBack="True" class="itext"

OnSelectedIndexChanged="auto_ddlMake_SelectedIndexChanged" Width="125px" />

<ajaxToolkit:CascadingDropDown ID="CascadingDropDown1" runat="server" Category="Make"

ParentControlID="auto_ddlYear" PromptText="-- Pick --" ServiceMethod="GetMakes"

ServicePath="CascadingDropDown.asmx" TargetControlID="auto_ddlMake" />

<asp:DropDownList ID="auto_ddlModel" runat="server" AutoPostBack="True" class="itext"

OnSelectedIndexChanged="auto_ddlModel_SelectedIndexChanged" Width="125px" />

<ajaxToolkit:CascadingDropDown ID="CascadingDropDown2" runat="server" Category="Model"

ParentControlID="auto_ddlMake" PromptText="-- Pick --" ServiceMethod="GetModels"

ServicePath="CascadingDropDown.asmx" TargetControlID="auto_ddlModel" />

<asp:LinkButton ID="lnkReset" runat="server" CausesValidation="False" OnClick="btnReset_Click"

Text="Reset" ToolTip="Clear all fields"></asp:LinkButton>

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" ViewStateMode="Enabled">

<div class="loading">

Loading<br />

<asp:Image ID="Image1" runat="server" ImageUrl="~/images/loading1.gif" AlternateText="loading">

</asp:Image>

</div>

</telerik:RadAjaxLoadingPanel>

</form>

Codebehind

protected void auto_ddlModel_SelectedIndexChanged(object sender, System.EventArgs e)

{

Response.Write("ddlmodel Called!");

Response.End();

}

RadAjaxLoadingPanel updates but CascadingDropDown events do not fire

6 Answers, 1 is accepted