/// <summary>
/// 更改城市信息
/// </summary>
/// <param name="New_City">新的城市实体</param>
/// <returns></returns>
public bool UpdateCity(Car_City TempCity)
{
Car_City OldCity = DB_City.Select(P => P.City_ID == TempCity.City_ID).Single();
Car_City NewCity = OldCity;
NewCity.City_Name = TempCity.City_Name;
return(DB_City.Update(OldCity, NewCity));
}
/// <summary>
/// 新增城市信息
/// </summary>
/// <param name="City">要增加的城市实体</param>
/// <returns></returns>
public bool AddCity(Car_City City)
{
if (DB_City.Select(P => P.City_Name == City.City_Name && P.City_Province == City.City_Province).Count() == 0)
{
return(DB_City.Insert(City));
}
else
{
return(false);
}
}
/// <summary>
/// 删除城市信息
/// </summary>
/// <param name="City">要删除的城市实体</param>
/// <returns></returns>
public bool DeleteCity(int CityID)
{
Car_City Cit = DB_City.Select(P => P.City_ID == CityID).Single();
return(DB_City.Delete(Cit));
}
