如何使TextBox失去焦点? [英] How to make TextBox lose its focus?

问题描述

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

How to make TextBox lose its focus and hide onscreen keyboard when user touches Enter virtual key?

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

推荐答案

    /// <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);
        }
    }

这很丑.但这行得通.关键部分是IsTabStop属性.如果我不触摸它，键盘会消失一秒钟，然后再次出现.

It's ugly. But it works. The key part is IsTabStop property. If I don't touch it - the keyboard disappers for a fraction of a second and reapears again.

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