常用方法
常用方法
常用方法
常用方法
public void AddBranch(Branch b)
{
if ((b.Phone).Length > 10 || b.Phone.Length < 9)
{
throw new Exception("the phone number is wrong!");
}
if (b.Employees < 1)
{
throw new Exception("the employees number is wrong!");
}
dal.AddBranch(b);
}