private void textBox1_TextChanged(object sender, TextChangedEventArgs e)
        {
            string capitalized = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(textBox1.Text);
            TextInfo RussiaTextInfo = new CultureInfo("ru-RU", false).TextInfo;
            textBox1.Text = RussiaTextInfo.ToTitleCase(textBox1.Text);

           textBox1.Focus();
          textBox1.Select(textBox1.CaretIndex + textBox1.Text.Length, 0);
        }