public Grade_Info GetGradeCodeBySchoolCode(School_Info school_Info, string v)
{
if (school_Info == null)
{
return(null);
}
return(DbSet.FirstOrDefault(a => a.GradeCode.StartsWith(school_Info.SchoolCode) && a.GradeName == v));
}
public void Update(School_Info obj)
{
throw new NotImplementedException();
}