BooksDemo.MainWindow.OnShowBook C# (CSharp) Метод

        private void OnShowBook(object sender, ExecutedRoutedEventArgs e)
        {
            var bookUI = new BookUC();
            bookUI.DataContext = new Book { Title = "Professional C# 5.0 and .NET 4.5.1", Publisher = "Wrox Press", Isbn = "978-0-470-50225-9" };
            this.tabControl1.SelectedIndex = this.tabControl1.Items.Add(new TabItem { Header = "Book", Content = bookUI });
        }