public void deleteGrade(Grade g)
{
try
{
using (var db = new DataContext())
{
var orig = db.Grades.Find(g.GradeID);
if (orig != null)
{
db.Grades.Remove(orig);
db.SaveChanges();
}
}
}
catch (DbUpdateConcurrencyException)
{
throw;
}
catch (DbUpdateException)
{
MessageBox.Show("You can not delete used grade.", "Grade Deletion Error");
return;
}
catch (DbEntityValidationException)
{ throw; }
}
public void deleteGrade(Grade g)
{
try
{
using (var db = new DataContext())
{
var orig = db.Grades.Find(g.GradeID);
if (orig != null)
{
db.Grades.Remove(orig);
db.SaveChanges();
}
}
}
catch (DbUpdateConcurrencyException)
{
throw new EresDataContextException("Blad polaczania z baza danych. Sprobuj jeszcze raz.", "Usuwanie oceny");
}
catch (DbUpdateException)
{
throw new EresDataContextException("Nie mozna usunac uzywanej oceny!", "Usuwanie oceny");
}
catch (DbEntityValidationException)
{
throw new EresDataContextException("Blad polaczania z baza danych.", "Usuwanie oceny");
}
}
public void createGrade(int realId, string gradeName, string maxValue)
{
try
{
using (var db = new DataContext())
{
var real = db.Realisations.Find(realId);
var grade = new Grade { Realisation = real, Name = gradeName, MaxValue = maxValue };
db.Grades.Add(grade);
db.SaveChanges();
}
}
catch (DbEntityValidationException)
{ throw; }
}
public void createGrade(int realId, string gradeName, string maxValue)
{
try
{
using (var db = new DataContext())
{
var real = db.Realisations.Find(realId);
var grade = new Grade { Realisation = real, Name = gradeName, MaxValue = maxValue };
db.Grades.Add(grade);
db.SaveChanges();
}
}
catch (DbEntityValidationException)
{
throw new EresDataContextException("Blad polaczania z baza danych.", "Dodawanie oceny");
}
}
