新增
添加命名空间引用 System.Data.Entity.Infrastructure:
#region 新增 static int Add() { using (NorthwindEntities db = new NorthwindEntities()) { Customers cus = new Customers { CustomerID = "zouqj", Address = "南山区新能源创新产业园", City = "深圳", Phone = "15243641131", CompanyName = "深圳跨境翼电商商务有限公司", ContactName = "邹琼俊" }; //方法一 //db.Customers.Add(cus); //方法二(还是方法一简单一些) DbEntityEntry<Customers> entry = db.Entry(cus); entry.State = System.Data.Entity.EntityState.Added; return db.SaveChanges(); } } #endregion
查询
简单查询和延时加载