它应该是：
context.TableName.AddObject(TableEntityInstance);
哪里：
TableName
：数据库中表的名称。TableEntityInstance
：表实体类的实例。
如果您的表是
Orders，则：
Order order = new Order();context.Orders.AddObject(order);
例如：
var id = Guid.NewGuid(); // insert using (var db = new EfContext("name=EfSample")) { var customers = db.Set<Customer>(); customers.Add( new Customer { CustomerId = id, Name = "John Doe" } ); db.SaveChanges(); }这是一个实时示例：
public void UpdatePlayerScreen(byte[] imageBytes, string installationKey){ var player = (from p in this.ObjectContext.Players where p.InstallationKey == installationKey select p).FirstOrDefault(); var current = (from d in this.ObjectContext.Screenshots where d.PlayerID == player.ID select d).FirstOrDefault(); if (current != null) { current.Screen = imageBytes; current.Refreshed = DateTime.Now; this.ObjectContext.SaveChanges(); } else { Screenshot screenshot = new Screenshot(); screenshot.ID = Guid.NewGuid(); screenshot.Interval = 1000; screenshot.IsTurnedOn = true; screenshot.PlayerID = player.ID; screenshot.Refreshed = DateTime.Now; screenshot.Screen = imageBytes; this.ObjectContext.Screenshots.AddObject(screenshot); this.ObjectContext.SaveChanges(); }}
