public bool Valid()
{
ClearErrors();
if (IsNew && Courses.Any(c => Code == c.Code) || IsNew && Code == 0)
{
AddError("Code", Properties.Resources.Error_Exist);
}
if (string.IsNullOrEmpty(Title))
{
AddError("Title", Properties.Resources.Error_RequiredTitle);
}
if (Teacher == null)
{
AddError("Teacher", Properties.Resources.Error_Required);
}
if (StartDate.CompareTo(FinishDate) > 0 || FinishDate.CompareTo(StartDate) < 0)
{
AddError("StartDate", Properties.Resources.Error_StartDate);
AddError("FinishDate", Properties.Resources.Error_FinishDate);
}
if (StartTime.CompareTo(EndTime) > 0)
{
AddError("StartTime", Properties.Resources.Error_StartTime);
AddError("EndTime", Properties.Resources.Error_EndTime);
}
RaiseErrors();
return(true);
}
