void SaveChanges()
        {
            MessageBoxVM = new MessageBoxModel()
            {
                Message = "Выполнить сохранение всех внесённых изменений?",
                Caption = ProjectView.ProjName + ": Выбор руководителя",
                Buttons = MessageBoxButton.YesNo
            };
            if (MessageBoxVM.Result == MessageBoxResult.Yes)
            {
                Project      project = Mapper.Map <ProjectView, Project>(ProjectView);
                ProjLeadView selectedProjLeadView = ProjLeadViews.FirstOrDefault(pLV => pLV.IsChanged && pLV.IsChecked);
                ProjLeadView previousProjLeadView = ProjLeadViews.FirstOrDefault(pLV => pLV.IsChanged && !pLV.IsChecked);
                Employee     selectedLeader       = Mapper.Map <ProjLeadView, Employee>(selectedProjLeadView);

                bool IsChangesSaved = false;
                try
                {
                    IsChangesSaved = ProjLeadLogic.SetLeaderToProject(project, selectedLeader);
                }
                catch (Exception ex)
                {
                    MessageBoxVM = new MessageBoxModel()
                    {
                        Message = ErrorMessage.MakingMessageForMessageBox(ex),
                        Caption = errCaption
                    };
                    Log.WriteLogAsync(ex);
                }
                if (IsChangesSaved)
                {
                    if (ViewModelsContainer.EmployeesViewModel != null)
                    {
                        ViewModelsContainer.EmployeesViewModel.IsEmployeeViewsChangedByProjectsViewModel = true;
                        if (previousProjLeadView != null)
                        {
                            ViewModelsContainer.EmployeesViewModel
                            .EmployeeViews
                            .First(eV => eV.Id == previousProjLeadView.Id)
                            .LeadProjViews.Remove(Mapper.Map <EmplProjs.EmplProjView>(ProjectsViewModel.CurrentProjView));
                        }
                        ViewModelsContainer.EmployeesViewModel.IsEmployeeViewsChangedByProjectsViewModel = false;
                    }
                    ProjectsViewModel.CurrentProjView.ProjLeadView = selectedProjLeadView;

                    foreach (var projLeadView in ProjLeadViews)
                    {
                        projLeadView.IsChanged = false;
                    }
                    IsProjLeadViewsChanged = false;
                }
            }
        }
        void DataLoading()
        {
            ProjLeadLogic.Login    = Credentials.Login;
            ProjLeadLogic.Password = Credentials.Password;

            Title      = ProjectView.ProjName + ": Выбор руководителя";
            errCaption = "Выбор руководителя: " + ProjectView.ProjName + " - Ошибка";
            List <Employee>            employees = new List <Employee>();
            IEnumerable <ProjLeadView> projLeadViews;

            try
            {
                employees = ProjLeadLogic.GetEmployees();
            }
            catch (Exception ex)
            {
                MessageBoxVM = new MessageBoxModel()
                {
                    Message = ErrorMessage.MakingMessageForMessageBox(ex),
                    Caption = errCaption
                };
                Log.WriteLogAsync(ex);
                projLeadViews = new List <ProjLeadView>();
            }

            projLeadViews = Mapper.Map <IEnumerable <ProjLeadView> >(employees);
            foreach (var projLeadView in projLeadViews)
            {
                if (ProjectView.ProjLeadView == null || ProjectView.ProjLeadView.Id != projLeadView.Id)
                {
                    projLeadView.IsChecked = false;
                }
                projLeadView.ProjLeadVM = this;
            }

            foreach (var projLeadView in projLeadViews)
            {
                projLeadView.PropertyChanged += (s, e) => OnProjLeadViewChanged(projLeadView, e.PropertyName);
                ProjLeadViews.Add(projLeadView);
            }
        }