//添加
public void Add(Order order)
{
using (var db = new OrderDB())
{
db.Order.Add(order);
db.SaveChanges();
}
}
//修改
public void Update(Order order)
{
using (var db = new OrderDB())
{
db.Order.Attach(order);
db.Entry(order).State = EntityState.Modified;
order.details.ForEach(
item => db.Entry(item).State = EntityState.Modified);
db.SaveChanges();
}
}
//删除
public void Delete(int KeyId)
{
using (var db = new OrderDB())
{
db.OrderDetail.Include("Good").ToList <OrderDetails>();
var order = db.Order.Include("details").SingleOrDefault(o => o.Id == KeyId);
foreach (var good in order.details)
{
db.Good.Remove(good.Good);
}
db.OrderDetail.RemoveRange(order.details);
db.Order.Remove(order);
db.SaveChanges();
}
}