/// <summary>
 /// Handles the OnBackButtonClicked event of the MembershipKeyboard control.
 /// </summary>
 /// <param name="sender">The source of the event.</param>
 /// <param name="eventArgs">The <see cref="EventArgs" /> instance containing the event data.</param>
 private void MembershipKeyboard_OnBackButtonClicked(object sender, EventArgs eventArgs)
 {
     RaiseKeyEvent(MembershipTextBox, Key.Back, Keyboard.PrimaryDevice);
     MembershipTextBox.Focus();
 }
        /// <summary>
        /// Handles the OnTextButtonClicked event of the MembershipKeyboard control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="TextButtonClickedEventArgs" /> instance containing the event data.</param>
        protected void MembershipKeyboard_OnTextButtonClicked(object sender, TextButtonClickedEventArgs e)
        {
            SendInput(MembershipTextBox, e.Character);

            MembershipTextBox.Focus();
        }
 /// <summary>
 /// Handles the Loaded event of the Page control.
 /// </summary>
 /// <param name="sender">The source of the event.</param>
 /// <param name="e">The <see cref="RoutedEventArgs" /> instance containing the event data.</param>
 private void Page_Loaded(object sender, RoutedEventArgs e)
 {
     MembershipTextBox.Focus();
 }