nature_net.user_controls.signup.textbox_GotFocus C# (CSharp) Метод

        void textbox_GotFocus(object sender, RoutedEventArgs e)
        {
            avatar_image_LostFocus(null, null);
            user_pin_LostFocus(null, null);
            focused_textbox = (Control)sender;
            if (keyboard_frame == null)
                keyboard_frame = new ContentControl();
            virtual_keyboard.ShowKeyboard(this, ref keyboard);
            keyboard.parent_frame = keyboard_frame;
            if (keyboard.validation_checker == null) keyboard.validation_checker = new CharacterValidation(this.ValidateString);
            keyboard_frame.Visibility = System.Windows.Visibility.Visible;
            if (keyboard != null)
            {
                if (this.keyboard_frame.Content == null)
                {
                    this.keyboard_frame.Content = keyboard;
                    //this.keyboard.Background = new SolidColorBrush(Colors.White);
                    this.keyboard_frame.Background = new SolidColorBrush(Colors.White);
                    window_manager.main_canvas.Children.Add(keyboard_frame);
                }
                keyboard.MoveAlongWith(parent, true);
            }
        }