Question : Make a relationship between two tables on one form.

I have a Contacts table and a Transaction table,
What I want to do is to put a list of contacts on the form, and also the transaction but it should only display the transactions that match the contact I choose from the list.
In access I did it very easily by making a sub form and linking the ID fields but how do I do it in visual studio?

Answer : Make a relationship between two tables on one form.

I found some tutrioles on msdn web site that explane it very well