public static int VerwijderenCursus(Cursus cursus)
 {
     try
     {
         using (UdemyEntities udemyEntities = new UdemyEntities())
         {
             udemyEntities.Entry(cursus).State = EntityState.Deleted;
             return(udemyEntities.SaveChanges());
         }
     }
     catch (Exception ex)
     {
         FileOperations.Foutloggen(ex);
         return(0);
     }
 }
 public static int ToevoegenCursus(Cursus cursus)
 {
     try
     {
         using (UdemyEntities udemyEntities = new UdemyEntities())
         {
             udemyEntities.Cursus.Add(cursus);
             return(udemyEntities.SaveChanges());
         }
     }
     catch (Exception ex)
     {
         FileOperations.Foutloggen(ex);
         return(0);
     }
 }