How can do a join using LINQ query?

Below is the LINQ code snippet for creating joins between object collections. In this case we are creating a join on customer and orders. If you remember the order collection was contained in the customer class.
 

return from clsCustomer ObjCust in objCustomer 

from clsOrder ObjOrder in ObjCust.Orders

select ObjCust;

Below is the result of how LINQ join query looks like.