How to connect TreeListTemplateColumn element behaviour with TreeListBoundColumn value.

[Arkadiusz]

Hello,
I have a trivial problem, probably. Unfortunatelly I have no idea how to solve it. Bellow is my sample code to ilustrate the problem.
My TemplateColumn content (RadGrid2 control) has to have different functionality depends on Selectror column contents.
All ideas about what event of TemplateColumn or RadGrid2 (or others) i should use and how to get current Selector column/row value will be worm welcome. 

<telerik:RadTreeList ID="rtv" runat="server" DataSourceID="SqlDS" DataKeyNames="ID_ELEMENT" ParentDataKeyNames="ID_PARENT" DataMember="DefaultView" >
   <Columns>
      <telerik:TreeListBoundColumn DataField="Name" HeaderText="Name" UniqueName="columnName" ReadOnly="True">
      </telerik:TreeListBoundColumn>
      <telerik:TreeListBoundColumn DataField="SELECTOR" HeaderText="SELECTOR" ReadOnly="True" DataType="System.Int32" UniqueName="columnSELECTOR" Visible="False">
      </telerik:TreeListBoundColumn>
      <telerik:TreeListTemplateColumn UniqueName="Template" HeaderText="Template"
                DataField="ID_ELEMENT">
         <ItemTemplate>
            <telerik:RadGrid ID="RadGrid2" runat="server"  DataSourceID="SqlDS2">
               <MasterTableView DataSourceID="SqlDS2"></MasterTableView>
            </telerik:RadGrid>
         </ItemTemplate>
      </telerik:TreeListTemplateColumn>
   </Columns>
</telerik:RadTreeList>

<asp:SqlDataSource ID="SqlDS" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" SelectCommand="SELECT_COMMAND" SelectCommandType="StoredProcedure">
</asp:SqlDataSource>

<asp:SqlDataSource ID="SqlDS2" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT_TEMPLATE" SelectCommandType="StoredProcedure">
   <SelectParameters>
      <asp:Parameter DefaultValue="0" Name="PARAM" Type="Int32" />
   </SelectParameters>
</asp:SqlDataSource>

[Marin]

Hi Arkadiusz,

 It depends what kind of functionality you need to enable for the grid. If it can be done by simply setting a property of RadGrid you can do this in the ItemDataBound event for the RadTreeList. There you can access the desired column and get its value (for the selector column) or find the nested grid in the case of the template column using the FindControl method. More information can be found in this help topic.

Greetings,
Marin
the Telerik team