public void update(OrderDetails order)
{
using (OrderDB db = new OrderDB())
{
db.OrderDetails.Attach(order);
db.Entry(order).State = System.Data.Entity.EntityState.Modified;
db.SaveChanges();
}
}
//修改订单
public void changeCustomerOfOrder(Order ele, String newCustomer)
{
ele.Customer = newCustomer;
using (var db = new OrderDB())
{
var target = db.Orders.Find(ele.OrderNum);
target.Customer = newCustomer;
db.SaveChanges();
}
}
//删除订单
public void deleteOrder(Order ele)
{
using (var db = new OrderDB())
{
var orderitem = from b in db.OrderDetails where b.OrderNum == ele.OrderNum select b;
db.OrderDetails.RemoveRange(orderitem);
var target = db.Orders.Find(ele.OrderNum);
db.Orders.Remove(target);
db.SaveChanges();
}
}
//添加产品
public void addOrderDetail(OrderDetails pro)
{
using (var db = new OrderDB())
{
var target = db.Orders.Find(pro.OrderNum);
var order = from e in this.ListOfOrder where e.OrderNum == pro.OrderNum select e;
foreach (Order ele in order)
{
ele.ListOfProduct.Add(pro);
}
target.ListOfProduct.Add(pro);
db.OrderDetails.Add(pro);
db.SaveChanges();
}
}
//添加订单
public bool addOrder(Order neworder)
{
if ((from b in this.ListOfOrder where b.OrderNum == neworder.OrderNum select b).Count() == 0)
{
using (var db = new OrderDB())
{
db.Orders.Add(neworder);
db.SaveChanges();
}
this.ListOfOrder.Add(neworder);
return(true);
}
else
{
return(false);
}
}
public bool changeOrderNumOfOrder(Order ele, String newNum)
{
ele.OrderNum = newNum;
using (var db = new OrderDB())
{
var orderitem = from b in db.OrderDetails where b.OrderNum == ele.OrderNum select b;
var target = db.Orders.Find(ele.OrderNum);
try
{
target.Customer = newNum;
foreach (OrderDetails el in orderitem)
{
el.OrderNum = newNum;
}
db.SaveChanges();
return(true);
}
catch (Exception e)
{
return(false);
}
}
}