public static void Save(tb_User_SwitchEntity obj)
{
if (obj!=null)
{
obj.Save();
}
}
/// <summary>根据主键获取一个实体</summary>
public static tb_User_SwitchEntity RetrieveAtb_User_SwitchEntity(int user_id, int switch_id)
{
tb_User_SwitchEntity obj=new tb_User_SwitchEntity();
obj.user_id=user_id;
obj.switch_id=switch_id;
obj.Retrieve();
if (obj.IsPersistent)
{
return obj;
}
else
{
return null;
}
}
