For .aspx
<rad:GridTemplateColumn HeaderText="Temp" UniqueName="Temp">
<ItemTemplate>
<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList>
</ItemTemplate>
</rad:GridTemplateColumn
SQL DataSource
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>" SelectCommand="SELECT [ProductName], [SupplierID] FROM [Products]"></asp:SqlDataSource>
CSharp code
protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
if(e.Item is GridDataItem)
{
GridDataItem item=(GridDataItem)e.Item;
DropDownList ddl = (DropDownList)item["Temp"].FindControl("DropDownList1");
ddl.DataSourceID = "SqlDataSource1";
ddl.DataTextField = "ProductName";
ddl.DataValueField = "ProductName";
ddl.DataBind();
}
}
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