public List <Order> SearchPriceMoreThan(double temp)
{
using (var db = new OrderDB())
{
return(db.tb_Order.Include("Items").Where(m => m.TotalPrice >= temp).ToList <Order>());
}
}
public List <Order> SearchOrderbyName(string temp)
{
using (var db = new OrderDB())
{
return(db.tb_Order.Include("Items").Where(m => m.Name == temp).ToList <Order>());
}
}
public List <Order> SearchAllOrders()
{
using (var db = new OrderDB())
{
return(db.tb_Order.Include("Items").ToList <Order>());
}
}
public void AddOrder(Order order)
{
using (var db = new OrderDB())
{
db.tb_Order.Add(order);
db.SaveChanges();
}
}
public List <Order> SearchOrderbyItem(string temp)
{
using (var db = new OrderDB())
{
var query = db.tb_Order.Include("Items").Where(m => m.Items.Where
(n => n.Item == temp).Count() > 0);
return(query.ToList <Order>());
}
}
public void Update(Order order)
{
using (var db = new OrderDB())
{
db.tb_Order.Attach(order);
db.Entry(order).State = EntityState.Modified;
order.Items.ForEach(item => db.Entry(item).State = EntityState.Modified);
db.SaveChanges();
}
}
public void DeleteByID(String id)
{
using (var db = new OrderDB())
{
var order = db.tb_Order.Include("Items").SingleOrDefault(m => m.ID == id);
db.tb_OrderDetails.RemoveRange(order.Items); //还需要删除 items 的内容
db.tb_Order.Remove(order);
db.SaveChanges();
}
}