void SaveChanges()
        {
            MessageBoxVM = new MessageBoxModel()
            {
                Message = "Выполнить сохранение всех внесённых изменений?",
                Caption = ProjectView.ProjName + ": Сотрудники",
                Buttons = MessageBoxButton.YesNo
            };
            if (MessageBoxVM.Result == MessageBoxResult.Yes)
            {
                Project project = Mapper.Map <ProjectView, Project>(ProjectView);
                IEnumerable <ProjEmplView> projEmplViewsToAdd = ProjEmplViews.Where(pEV => pEV.IsChanged &&
                                                                                    pEV.IsChecked);
                IEnumerable <ProjEmplView> projEmplViewsToDelete = ProjEmplViews.Where(pEV => pEV.IsChanged &&
                                                                                       pEV.IsChecked == false);
                List <Employee> projsToAdd    = Mapper.Map <IEnumerable <ProjEmplView>, List <Employee> >(projEmplViewsToAdd);
                List <Employee> projsToDelete = Mapper.Map <IEnumerable <ProjEmplView>, List <Employee> >(projEmplViewsToDelete);


                bool IsChangesSaved = false;
                try
                {
                    IsChangesSaved = ProjEmplsLogic.SetEmployeesToProject(project, projsToAdd, projsToDelete);
                }
                catch (Exception ex)
                {
                    MessageBoxVM = new MessageBoxModel()
                    {
                        Message = ErrorMessage.MakingMessageForMessageBox(ex),
                        Caption = errCaption
                    };
                    Log.WriteLogAsync(ex);
                }
                if (IsChangesSaved)
                {
                    foreach (var projEmplView in projEmplViewsToAdd)
                    {
                        ProjectsViewModel.CurrentProjView.ProjEmplViews.Add(projEmplView);
                    }
                    foreach (var projEmplView in projEmplViewsToDelete)
                    {
                        ProjectsViewModel.CurrentProjView.ProjEmplViews.Remove(projEmplView);
                    }

                    foreach (var projEmplView in ProjEmplViews)
                    {
                        projEmplView.IsChanged = false;
                        projEmplView.BackupClear();
                    }
                    IsProjEmplViewsChanged = false;
                }
            }
        }
 void CancelChanges()
 {
     if (ProjEmplViews.Where(v => v.IsChanged == true).Count() > 0)
     {
         MessageBoxVM = new MessageBoxModel()
         {
             Message = "Все внесённые изменения будут удалены. Продолжить?",
             Caption = ProjectView.ProjName + ": Сотрудники",
             Buttons = MessageBoxButton.YesNo
         };
         if (MessageBoxVM.Result == MessageBoxResult.Yes)
         {
             foreach (var pEV in ProjEmplViews)
             {
                 if (pEV.IsChanged)
                 {
                     pEV.IsChecked = pEV.Backup.IsChecked;
                 }
             }
         }
     }
 }