如何让TextBox失去焦点？

Question

TextBox当用户触摸Enter虚拟键时,如何使其失去焦点并隐藏屏幕键盘？

    private void TheName_KeyDown(object sender, KeyRoutedEventArgs e) {
        var tb = sender as TextBox;
        if (e.Key == Windows.System.VirtualKey.Enter) {
            // ... tb.LooseTheFocus_PLEASE(); !???
        }
    }

Answer 1

    /// <summary>
    /// Makes virtual keyboard disappear
    /// </summary>
    /// <param name="sender"></param>
    private void LoseFocus(object sender) {
        var control = sender as Control;
        var isTabStop = control.IsTabStop;
        control.IsTabStop = false;
        control.IsEnabled = false;
        control.IsEnabled = true;
        control.IsTabStop = isTabStop;
    }

    /// <summary>
    /// Makes virtual keyboard disappear when user taps enter key
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void LooseFocusOnEnter(object sender, KeyRoutedEventArgs e) {
        if (e.Key == Windows.System.VirtualKey.Enter) {
            e.Handled = true; LoseFocus(sender);
        }
    }

它很丑.但它的确有效.关键部分是IsTabStop属性.如果我不接触它 - 键盘会在几分之一秒内耗尽并再次重新开始.

Answer 2

只需将焦点设置到页面即可.

this.Focus();