WPF Get the Cursor in the box

Question

Hi all im having a Radio Button and Text box in front it, once i check the button the text box will become visible!

But i also want to my Cursor be visible in a text box to so easier for user to type \ how i can do these?!

thats my function

   private void SelectQualityChecked(object sender, RoutedEventArgs e)
    {
        txtSelectedQuantity.IsEnabled = true;

    }

Answer 1

Try this code:

        private void checkBox1_Checked(object sender, RoutedEventArgs e)
        {
          textBox1.IsEnabled = true;
          textBox1.Focus();
        } 

        private void checkBox1_Unchecked(object sender, RoutedEventArgs e)
        {
            textBox1.IsEnabled = false;
        }