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

        void textbox_LostFocus(object sender, RoutedEventArgs e)
        {
            if (!textbox_email.IsFocused && !textbox_name.IsFocused)// && !textbox_password.IsFocused)
                if (keyboard_frame != null)
                    keyboard_frame.Visibility = System.Windows.Visibility.Collapsed;
        }