public bool SCupdate(Int64 id, string grade)
{
bool b = false;
//查找出修改前的数据
tb_sc uu = DB.tb_sc.Where(a => a.id == id).FirstOrDefault();
if (uu != null)
{
try
{
uu.grade = grade;
DB.SubmitChanges();
b = true;
}
catch { }
}
return(b);
}
public bool Del(Int64 id)
{
try
{
tb_sc stusc = DB.tb_sc.FirstOrDefault(a => a.id == id);
if (stusc == null)
{
return(false);
}
else
{
DB.tb_sc.DeleteOnSubmit(stusc);
DB.SubmitChanges();
return(true);
}
}
catch (Exception)
{
return(false);
}
}