I have a Radgrid which is binded in codebehind and containined in modalextender .Onload , grid show this error , UserNameTitleIndexChanged not defined ,it is defined in radcombobox but still not working
<telerik:RadGrid ID="GridConsultancy" runat="server" FilterMenu-CausesValidation="false" AllowFilteringByColumn="true" AllowPaging="false" AutoGenerateColumns="false" OnNeedDataSource="GridConsultancy_NeedDataSource" EnableLinqExpressions="false"> <GroupingSettings CaseSensitive="false" /> <ClientSettings> <Scrolling AllowScroll="True" UseStaticHeaders="True"></Scrolling> </ClientSettings> <MasterTableView AllowFilteringByColumn="true" NoDetailRecordsText="No Data Present" AllowSorting="true" TableLayout="Fixed"> <HeaderStyle Width="120" /> <Columns> <telerik:GridTemplateColumn HeaderText="Sr No." HeaderStyle-Width="70" AllowFiltering="False" AutoPostBackOnFilter="true"> <ItemTemplate> <asp:Label ID="lb_s" runat="server" Text="<%# Container.DataSetIndex+1 %>"></asp:Label> </ItemTemplate> </telerik:GridTemplateColumn> <telerik:GridDateTimeColumn DataField="EntryDate" UniqueName="EntryDate" HeaderText="Entry Date" HeaderStyle-Width="110" FilterControlWidth="100px" DataType="System.DateTime" SortExpression="EntryDate" EnableTimeIndependentFiltering="true" AutoPostBackOnFilter="true" DataFormatString="{0:dd MMM yyyy}" CurrentFilterFunction="GreaterThanOrEqualTo"> </telerik:GridDateTimeColumn> <telerik:GridBoundColumn DataField="UserName" HeaderText="UserName" UniqueName="UserName" FilterControlWidth="110" HeaderStyle-Width="120" AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" ShowFilterIcon="false"> <FilterTemplate> <telerik:RadComboBox ID="UserNameRadComboBoxTitle5" Width="110" Style="z-index: 10000001" runat="server" DataTextField="UserName" DataValueField="UserName" OnClientSelectedIndexChanged="UserNameTitleIndexChanged" SelectedValue='<%# ((GridItem)Container).OwnerTableView.GetColumn("UserName").CurrentFilterValue %>'> <Items> <telerik:RadComboBoxItem Text="Select" /> <telerik:RadComboBoxItem Text="All" Value="" /> <telerik:RadComboBoxItem Text="Tim" Value="Tim" /> <telerik:RadComboBoxItem Text="Jeorge" Value="Jeorge" /> </Items> </telerik:RadComboBox> <telerik:RadScriptBlock ID="UserNameRadScriptBlock" runat="server"> <script type="text/javascript"> function UserNameTitleIndexChanged(sender, args) { var tableView = $find("<%# ((GridItem)Container).OwnerTableView.ClientID %>"); tableView.filter("UserName", args.get_item().get_value(), "Contains"); } </script> </telerik:RadScriptBlock> </FilterTemplate> </telerik:GridBoundColumn> </Columns> </MasterTableView> </telerik:RadGrid>