I have a master-detail tables in my db like OrderMaster and Orderdetail.<BR>I want to display the data from the 2 tables in a asp.net datagrid control where by on click of the orderid column(primary key) of the Ordermaster table the corresponding records from orderdetail are shown below it in a tree like view manner. The orderdetail table will have the orderid and itemid column as composite primary key.<BR>Any examples on this.<BR>Thanks.