Hi miksh,
Please have a look into the sample code snippet which works fine at my end.
ASPX:
<
telerik:RadComboBox
ID
=
"RadComboBox1"
runat
=
"server"
DataSourceID
=
"SqlDataSource1"
DataTextField
=
"CompanyName"
DataValueField
=
"CustomerID"
DropDownAutoWidth
=
"Enabled"
>
</
telerik:RadComboBox
>
<
asp:SqlDataSource
ID
=
"SqlDataSource1"
runat
=
"server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [CustomerID], [CompanyName] FROM [Customers]"></
asp:SqlDataSource
>
Please elaborate your requirement if it doesn't help.
Thanks,
Princy.