1 using (var context = new EFRecipesEntities()) 2 { 3 //删除之前的测试数据 4 context.Database.ExecuteSqlCommand("delete from chapter3.[order]"); 5 context.Database.ExecuteSqlCommand("delete from chapter3.account"); 6 //添加新的测试数据 7 var account1 = new Account { City = "Raytow...
Louisville, KY Thunder on the Ohio Raytown, MO Little Blue River Festival Fourth of July Fireworks Dallas, TX TechFest 2010 BBQ Ribs Championship 原理 在代码清单3-33中,针对这个问题,展示了两种不同的方法。 第一种方法使用LINQ和group by 操作符按sate和city对结果集进行分组。当用group by进行多属性...
8", 7 City = "Raytown", 8 State = "MO", 9 ZIPCode = "64133" 10 }; 11 var address2 = new Address { 12 AddressLine1 = "222 Baker St.", 13 AddressLine2 = "Apt.22B", 14 City = "Raytown", 15 State = "MO", 16 ZIPCode = "64133" 17 }; 18 19 context.Agents.Add(new ...
8", 7 City = "Raytown", 8 State = "MO", 9 ZIPCode = "64133" 10 }; 11 var address2 = new Address { 12 AddressLine1 = "222 Baker St.", 13 AddressLine2 = "Apt.22B", 14 City = "Raytown", 15 State = "MO", 16 ZIPCode = "64133" 17 }; 18 19 context.Agents.Add(new ...