Odd Behavior with FilterTemplate on RadComboBox

[Eric Klein]

I have a screen that contains a RadGrid where I set the GroupSetting CaseSensitive = false, and I allow filter b column.  This woks for all my columns except for a column I have set with a filter template that contains a RadComboBox.  When I select from the combo nothing gets returned.  When I run SQL Server Profiler I can see the OnNeedDataSouce query works and returns data.  If I change the grid to populate with the column being set to upper case it works.  If I Remove the CaseSensitive it works.  Why is it having an issue with the filter with a radcombo box?

<GroupingSettings CaseSensitive="false" />
 <ExportSettings>
    <Excel Format="Html" />
 </ExportSettings>
 <AlternatingItemStyle BackColor="#EEEEEE"></AlternatingItemStyle>
 <MasterTableView DataKeyNames="AdvisorBlotterID" PagerStyle-Mode="NextPrevNumericAndAdvanced">
     <Columns>
           <telerik:GridBoundColumn SortExpression="ClientName" DataField="ClientName" HeaderText="Client Name" >
                 <FilterTemplate>
                         <telerik:RadComboBox ID="RadComboBoxClientName" DataTextField="ClientName" DataValueField="ClientName" AppendDataBoundItems="true" Width="150px" SelectedValue='<%# ((GridItem)Container).OwnerTableView.GetColumn("ClientName").CurrentFilterValue %>' runat="server" OnClientSelectedIndexChanged="ClientNameIndexChanged" Skin="Office2007">
                          </telerik:RadComboBox>
                        <telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
                               <script type="text/javascript">
                                    function ClientNameIndexChanged(sender, args) {
                                        var tableView = $find("<%# ((GridItem)Container).OwnerTableView.ClientID %>");
                                        if (args.get_item().get_value() == "0") {
                                                tableView.filter("ClientName", args.get_item().get_value(), "NoFilter");
                                         }
                                        else {
                                                tableView.filter("ClientName", args.get_item().get_value(), "EqualTo");
                                          }
                                 }
                              </script>
                           </telerik:RadScriptBlock>
                     </FilterTemplate>
                <ItemStyle VerticalAlign="Top" />
           </telerik:GridBoundColumn>

[Shinu]

Hello Eric,

Check the following demo which implements the same.
Grid / Filter Templates

-Shinu.

[Eric Klein]

Yes I can see that but it does not take into account the GroupSetting CaseSenstivie = "false". I can ge the drop down to work but I also have plain text box filters that I would like to not be case sensitive. 

[Vasil]

Hello Eric,

In a local copy of the demos I set: <GroupingSettings CaseSensitive="false" /> for the grid and then set AllowFiltering="true"  for the ContactName column.
Now the filtering is working fine for all ComboBoxes and for the ContactName column. See the attached screenshot.

Regards,
Vasil
the Telerik team