Question

I am writing a linq to sql statement using the join. By searching I reached the the link below :
What is the syntax for an inner join in LINQ to SQL?
in this question the answer is like :

var dealercontacts = from contact in DealerContact
                     join dealer in Dealer on contact.DealerId equals dealer.ID
                     select contact;

in this statement, inner join is used on single comparison statement i.e. on contact.DealerId equals dealer.ID But when I tried to do on contact.DealerId equals dealer.ID && contact.Branch equals dealer.Branch, It does not accept the second comparison statement.
Please guide me how can I have this?

Answer 1

Doesn’t your model have a real association at the entity level?

Meaning, DealerContact having a property to represent the associated Dealer instead of handling just the ids.

You probably don’t even need to specify that join manually.
How about:

var dealercontacts = from contact in DealerContact
                     where contact.Branch equals contact.Dealer.Branch
                     select contact;