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What is the syntax for an inner join in LINQ to SQL?

I'm writing a LINQ to SQL statement, and I'm after the standard syntax for a normal inner join with an ON clause in C#.

How do you represent the following in LINQ to SQL:

select DealerContact.*

from Dealer 

inner join DealerContact on Dealer.DealerID = DealerContact.DealerID
sql dotnet c#
by

2 Answers

espadacoder11
It goes something like:


from t1 in db.Table1

join t2 in db.Table2 on t1.field equals t2.field

select new { t1.field2, t2.field3}

It would be nice to have sensible names and fields for your tables for a better example. :)

Update

I think for your query this might be more appropriate:


var dealercontacts = from contact in DealerContact

                     join dealer in Dealer on contact.DealerId equals dealer.ID

                     select contact;

Since you are looking for the contacts, not the dealers.
RoliMishra
You can try this: 

var results = from c in db.Companies

              join cn in db.Countries on c.CountryID equals cn.ID

              join ct in db.Cities on c.CityID equals ct.ID

              join sect in db.Sectors on c.SectorID equals sect.ID

              where (c.CountryID == cn.ID) && (c.CityID == ct.ID) && (c.SectorID == company.SectorID) && (company.SectorID == sect.ID)

              select new { country = cn.Name, city = ct.Name, c.ID, c.Name, c.Address1, c.Address2, c.Address3, c.CountryID, c.CityID, c.Region, c.PostCode, c.Telephone, c.Website, c.SectorID, Status = (ContactStatus)c.StatusID, sector = sect.Name };





return results.ToList();

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