public int Add(T o)
{
if (!isExits(o))
{
objectDbSet.Add(o);
int res = db.SaveChanges();
if (res > 0)
{
objectBindingList.Add(o);
}
return(res);
}
else
{
return(-1);
}
}
public int Update(Student stu)
{
Student old_stu = entity.Students.FirstOrDefault(n => n.ID == stu.ID);
old_stu.Name = stu.Name;
old_stu.Phone = stu.Phone;
old_stu.Address = stu.Address;
entity.Entry(old_stu).State = System.Data.Entity.EntityState.Modified;
int num = entity.SaveChanges();
if (num > 0)
{
ob_BindingList[currentIndex] = old_stu;
ob_BindingList.ResetCurrentItem();
}
return(num);
}
