Basically, this is a problem in the way you set the DataSource and the DataMember properties.
The best way to go is to set the same DataSource to all the grids and set the DataMember to the relationship name of each level of detail grids.
gridControl1.SetDataBindings( dataSet11, “Customers” );
DetailGrid dgrid1 = new DetailGrid();
DetailGrid dgrid2 = new DetailGrid();
gridControl1.DetailGridTemplates.Add( dgrid1 );
dgrid1.SetDataBindings( dataSet11, “Customers.Customers_Orders” );
dgrid1.DetailGridTemplates.Add( dgrid2 );
dgrid2.SetDataBindings( dataSet11, “Customers.Customers_Orders.Orders_OrderDetails” );
Imported from legacy forums. Posted by André (had 1708 views)