DropDownlist postback problem in radGrid

[ravi]

Hi

Here i have problem with post back with 2 dropdown inside radgrid
we have placed 2 dropdown controls  inside form template of radgrid.
i want to get values depends on first dropdown to fill second dropdown.
how can we implement in CS file.

my html code.

<

telerik:RadGrid  ID="RadGrid1"   runat="server"   Skin="Office2007" GridLines="None"  PageSize = "10"  AllowPaging="True"  PagerStyle-Mode="NextPrevAndNumeric"  AllowSorting="True"  

ShowStatusBar="true"  AutoGenerateColumns="False" 

AllowMultiRowSelection ="true"  ClientSettings-Selecting-AllowRowSelect="true"  onneeddatasource="RadGrid1_NeedDataSource" >  

 

<MasterTableView GridLines="None" HeaderStyle-CssClass="grid_hd" Width="100%" CommandItemStyle-CssClass="grid_cmd CommandItemDisplay="TopAndBottom" DataKeyNames="RoleID" InsertItemPageIndexAction="ShowItemOnFirstPage"> 

 

<Columns>  ....  

 </Columns>  <EditFormSettings EditFormType="Template">  <FormTemplate>  <table cellpadding="0" cellspacing="0" border="0" width="100%"> <tr> <td> <asp:DropDownList ID="drop1" runat="server" AutoPostBack="true"  

onselectedindexchanged="drop1_SelectedIndexChanged" > <asp:ListItem Value="1">ONE</asp:ListItem> <asp:ListItem Value="2">TWO</asp:ListItem> 

 

</asp:DropDownList> <asp:DropDownList ID="drop2" runat="server"> </asp:DropDownList> </td> </tr>

 

 

 </table> </FormTemplate></EditFormSettings></MasterTableView> </telerik:RadGrid>  

can plz let me if u know any solution.

 

[Princy]

Hello Ravi,

Check out the following code to achieve the required scenario of populating one dropdown on the selection changed event of the other.
aspx:

 <EditFormSettings EditFormType="Template" >
            <FormTemplate>
           <table cellpadding="0" cellspacing="0" border="0" width="100%"> <tr> <td>
                <asp:DropDownList ID="DropDownList1" AutoPostBack="true"  runat="server" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">
                <asp:ListItem Text="ONE" Value="1">
                </asp:ListItem>
                 <asp:ListItem Text="TWO" Value="2">
                </asp:ListItem>
                </asp:DropDownList>
                </td>
                <td>
                <asp:DropDownList ID="DropDownList2" runat="server">
                </asp:DropDownList>
            </td> </tr> </table>
          </FormTemplate>
 </EditFormSettings>

cs:

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)

{

DropDownList ddl1 = (DropDownList)sender;

GridEditableItem editItem = (GridEditableItem)ddl1.NamingContainer;

DropDownList ddl2 = (DropDownList)editItem.FindControl("DropDownList2");

//Assign the datasource for the dropdown

ddl2.DataSource = "";

}

Thanks
Princy.