/// <summary>
/// 删除数据
/// </summary>
/// <param name="paraTb_Checkout"></param>
/// <returns>true：删除成功，false：不存在该记录</returns>
public bool deleteMode(tb_CheckOut paraTb_Checkout)
{
if (paraTb_Checkout == null)
throw new ArgumentNullException("paraTb_Checkout");
try
{
var query = from p in _context.tb_CheckOut
where p.CheckOutID == paraTb_Checkout.CheckOutID
select p;
if (query.ToList().Count < 1)
{
return false;
}
else
{
foreach (var model in query.ToList())
{
if (!_context.IsAttached(model))
_context.tb_CheckOut.Attach(model);
_context.tb_CheckOut.DeleteObject(model);
_context.SaveChanges();
}
return true;
}
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 插入数据
/// </summary>
/// <param name="paraTb_Checkout"></param>
/// <returns>true：插入成功，false：已存在该记录</returns>
public bool addMode(tb_CheckOut paraTb_Checkout)
{
if (paraTb_Checkout == null)
throw new ArgumentNullException("paraTb_Checkout");
try
{
var query = from p in _context.tb_CheckOut
where p.CheckOutID == paraTb_Checkout.CheckOutID
select p;
if (query.ToList().Count() > 0)
{
return false;
}
else
{
_context.tb_CheckOut.AddObject(paraTb_Checkout);
_context.SaveChanges();
return true;
}
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 用于向 tb_CheckOut EntitySet 添加新对象的方法，已弃用。请考虑改用关联的 ObjectSet<T> 属性的 .Add 方法。
/// </summary>
public void AddTotb_CheckOut(tb_CheckOut tb_CheckOut)
{
base.AddObject("tb_CheckOut", tb_CheckOut);
}
/// <summary>
/// 更新数据
/// </summary>
/// <param name="paraTb_Checkout"></param>
/// <returns>true：更新成功，false：更新数据失败，不存在该记录！</returns>
public bool updateMode(tb_CheckOut paraTb_Checkout)
{
if (paraTb_Checkout == null)
throw new ArgumentNullException("paraTb_Checkout");
try
{
var oldEntity = (from p in _context.tb_CheckOut
where p.CheckOutID == paraTb_Checkout.CheckOutID
select p).FirstOrDefault();
if (oldEntity == null)
{
return false;
}
else
{
_context.ApplyCurrentValues(oldEntity.GetType().Name, paraTb_Checkout);
_context.SaveChanges();
return true;
}
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 创建新的 tb_CheckOut 对象。
/// </summary>
/// <param name="checkOutID">CheckOutID 属性的初始值。</param>
public static tb_CheckOut Createtb_CheckOut(global::System.String checkOutID)
{
tb_CheckOut tb_CheckOut = new tb_CheckOut();
tb_CheckOut.CheckOutID = checkOutID;
return tb_CheckOut;
}