从d1在dealercontract中加入d2在dealercontract中d1.dealearid = d2.dealerid select new {dealercontract.*}

在linqc#内连接两个表

var result = from q1 in table1
             join q2 in table2
             on q1.Customer_Id equals q2.Customer_Id
             select new { q1.Name, q1.Mobile, q2.Purchase, q2.Dates }

使用LINQ连接执行内部连接。

var employeeInfo = from emp in db.Employees
                   join dept in db.Departments
                   on emp.Eid equals dept.Eid 
                   select new
                   {
                    emp.Ename,
                    dept.Dname,
                    emp.Elocation
                   };

var data=(from t in db.your tableName(t1) 
          join s in db.yourothertablename(t2) on t1.fieldname equals t2.feldname
          (where condtion)).tolist();

实际上，在linq中，通常最好不要加入。当有导航属性时，一个非常简洁的方式来写你的linq语句是:

from dealer in db.Dealers
from contact in dealer.DealerContacts
select new { whatever you need from dealer or contact }

它转换为where子句:

SELECT <columns>
FROM Dealer, DealerContact
WHERE Dealer.DealerID = DealerContact.DealerID

试试这个吧，

var dealer = from d in Dealer
             join dc in DealerContact on d.DealerID equals dc.DealerID
             select d;