linq中如何在join中指定多个条件

public ActionResult Edit(int id)

        {

            using (DataContext db = new DataContext(ConfigurationManager.ConnectionStrings["sqlConnection"].ConnectionString))

            {

                IQueryable<ClassInformation> result = from c in db.GetTable<TClass>()

                                                      join t in db.GetTable<TTeacher>()

                                                      on new { id = c.ID, id1 = c.ID } 

                                                      equals new { id = t.ClassID, id1 = id }

                                                      select new ClassInformation { ID = c.ID, ClassID = t.ClassID, Name = c.Name, TeacherName = t.Name, Address = t.Address, Phone = t.Phone, Email = t.Email };

                ClassInformation k = result.Single();

                ViewData["K"] = k;

                return View();





            }



        }



 

借助于匿名类型：其实和解决按多条件分组的思路是一样的。