I have a radgrid that contains another one inside its DetailItemTemplate ; as shown in code below :
<telerik:RadGrid ID="Radgrid1" runat="server" AutoGenerateColumns="false"
OnNeedDataSource="Radgrid1_NeedDataSource" OnItemDataBound="Radgrid1_ItemDataBound">
<MasterTableView AutoGenerateColumns="false" DataKeyNames="ID" GroupLoadMode="Client">
<Columns>
<telerik:GridBoundColumn HeaderText="Name" DataField="NAME" />
</Columns>
<DetailItemTemplate>
<telerik:RadGrid ID="Radgrid2" runat="server" AutoGenerateColumns="false">
<MasterTableView AutoGenerateColumns="false" DataKeyNames="Number"
GroupLoadMode="Client">
<Columns>
<telerik:GridBoundColumn HeaderText="Number" DataField="NUMBER" />
</Columns>
</MasterTableView>
</telerik:RadGrid>
</DetailItemTemplate>
</MasterTableView>
</telerik:RadGrid>
what's the best method to bind DataTable to radgrid2 as DataSource ??