private AppUserViewModel EntityToViewModel(M_AppUser entity)
 {
     return new AppUserViewModel
     {
         ID = entity.ID,
         Code = entity.Code,
         Name = entity.Name
     };
 }
 public void Remove(M_AppUser entity)
 {
     this.DB.AppUsers.Remove(entity);
 }
 private void CheckConcurrency(AppUserViewModel viewModel, M_AppUser entity)
 {
     if (!entity.Timestamp.SequenceEqual(viewModel.Timestamp))
     {
         throw new DbUpdateConcurrencyException();
     }
 }
 public void Add(M_AppUser entity)
 {
     this.DB.AppUsers.Add(entity);
 }