RadComboBox server side event not firing

[Ashok]

Hi,

I am using RadComboBoxes in ListView template. I have total 3 comboboxes. Out of 3, 2 comboboxes are firing server side events but first combo box is not firing the events. It was working fine before, suddenly it stopped firing events.

I am struggling a lot to find what went wrong. Please help me assp.

[Shinu]

Hi,


Have you set the AutoPostBack property of RadComboBox to True?


-Shinu.

[Ashok]

Thanks for reply. Yes its there. I have tried other possible ways also like attaching event manually on page load. I am observing, sometimes it fires the event sometimes not... mostly not.

Below is the source code for the reference. Highlighted drop down is not firing events.

 

 

<tr>

 

 

 

<td align="left" class="formlabel9" >

 

Category

 

 

<span class="contentwarninglabel">*</span>

 

 

 

<asp:RequiredFieldValidator ID="CategoryValidator" runat="server"

 

 

 

ControlToValidate="rdComboCategory" Visible="true" Display="None" ErrorMessage="Category is mandatory!">

 

 

 

</asp:RequiredFieldValidator>

 

 

 

<ajaxToolkit:ValidatorCalloutExtender ID="CategoryCalOutExtender" WarningIconImageUrl ="~/Images/icon_oops.gif" CssClass="customCalloutStyle" HighlightCssClass="customCalloutStyle"

 

 

 

runat="server" TargetControlID="CategoryValidator" >

 

 

 

</ajaxToolkit:ValidatorCalloutExtender>

 

 

 

</td>

 

 

 

<td class="formcontrol9" align="left" >

 

 

 

<telerik:RadComboBox ID="rdComboCategory" runat="server" Width="124px" CssClass="formlabel2controls" AutoPostBack="True" CausesValidation="false"

 

 

 

EmptyMessage="Select a Category" AllowCustomText="true"

 

 

 

HighlightTemplatedItems="true"

 

 

 

MarkFirstMatch="true" DataTextField="CategoryID" DataValueField="CategoryName" OnSelectedIndexChanged="rdComboCategory_OnSelectedIndexChanged" >

 

 

 

</telerik:RadComboBox>

 

 

 

 

<asp:LinkButton runat="server" CssClass="contentlinks" ID="AddCategory" >New</asp:LinkButton>

 

 

 

<div id="pnlModalPanel1" style="display: none">

 

 

 

<asp:UpdatePanel ID="UpdatePanel2" runat="server">

 

 

 

<ContentTemplate>

 

 

 

<div>

 

 

 

<uc1:Category ID="ucAddPopup" runat="server" />

 

 

 

</div>

 

 

 

</ContentTemplate>

 

 

 

</asp:UpdatePanel>

 

 

 

</div>

 

 

 

<ajaxToolkit:ModalPopupExtender TargetControlID="AddCategory" PopupControlID="pnlModalPanel1"

 

 

 

BackgroundCssClass="modalBackground" runat="server" ID="mdlpopupAddevent">

 

 

 

</ajaxToolkit:ModalPopupExtender>

 

 

 

</td>

 

 

 

 

<td align="left" class="formlabel9">

 

Document

 

<br />Type

 

 

 

<span class="contentwarninglabel">*</span>

 

 

 

<asp:RequiredFieldValidator ID="DocTypeValidator" runat="server"

 

 

 

ControlToValidate="rdComboSubCategory" Visible="true" Display="None" ErrorMessage="Document Type is mandatory!">

 

 

 

</asp:RequiredFieldValidator>

 

 

 

<ajaxToolkit:ValidatorCalloutExtender ID="DocumentTypeValidatorCallout"

 

 

 

runat="server" TargetControlID="DocTypeValidator" WarningIconImageUrl ="~/Images/icon_oops.gif" Width="120px" CssClass="customCalloutStyle" HighlightCssClass="customCalloutStyle" >

 

 

 

</ajaxToolkit:ValidatorCalloutExtender>

 

 

 

</td>

 

 

 

<td class="formcontrol9" align="left" >

 

 

 

<telerik:RadComboBox ID="rdComboSubCategory" runat="server" CssClass="formlabel2controls" CausesValidation="false" Width="124px"

 

 

 

EmptyMessage="Select a Type of Document" AllowCustomText="true"

 

 

 

EnableItemCaching="true"

 

 

 

MarkFirstMatch="true" AutoPostBack="true" OnSelectedIndexChanged="rdComboSubCategory_OnSelectedIndexChanged" >

 

 

 

 

</telerik:RadComboBox>

 

 

 

<asp:LinkButton runat="server" CssClass="contentlinks" ID="btnNewDocumentType" OnClick="ShowSubcategoryDialog" CausesValidation="false" >New</asp:LinkButton>

 

 

 

<div class="panelCSS" >

 

 

 

<asp:UpdatePanel ID="unlDoc" runat="server">

 

 

 

<ContentTemplate>

 

 

 

 

<div id="dvDocument" style="display: none">

 

 

 

 

<div>

 

 

 

<uc1:Document ID="ucAddDoc" runat="server" />

 

 

 

</div>

 

 

 

 

 

</div>

 

 

 

</ContentTemplate>

 

 

 

</asp:UpdatePanel>

 

 

 

</div>

 

 

 

<asp:HiddenField runat="server" ID="hdnSubCat" />

 

 

 

<ajaxToolkit:ModalPopupExtender TargetControlID="hdnSubCat" PopupControlID="dvDocument"

 

 

 

BackgroundCssClass="modalBackground" runat="server" ID="mdlDocument">

 

 

 

</ajaxToolkit:ModalPopupExtender>

 

 

 

</td>

 

 

 

</tr>

 

[Dimitar Terziev]

Hi Ashok,

I've already answered to your support ticket regarding this forum post. We couldn't reproduce the problem with the following code provided, so please send us a runnable version of your project in the ticket as attaching zip files is not allowed in the forums.

All the best,
Dimitar Terziev
the Telerik team