WPF TextBox select 全部位于 Tab 焦点上

Question

我正在尝试 select 使用 Tab 键完成焦点后的所有文本。但我无法找到正确的解决方案。现在我正在使用 GotFocusEvent 但现在当我用鼠标单击时它会引发事件。

我现在使用的代码是：

EventManager.RegisterClassHandler(typeof(System.Windows.Controls.TextBox), System.Windows.Controls.TextBox.GotKeyboardFocusEvent, new RoutedEventHandler(SelectAllText));


void SelectAllText(object sender, RoutedEventArgs e)
{
    var textBox = sender as System.Windows.Controls.TextBox;
    if (textBox != null)
        if (!textBox.IsReadOnly)
            textBox.SelectAll();
}

Answer 1

使用MouseButtonState如下：

 void SelectAllText(object sender, RoutedEventArgs e)
    {
        if (Mouse.LeftButton == MouseButtonState.Released)
        {
            var textBox = sender as System.Windows.Controls.TextBox;
            if (textBox != null)
                if (!textBox.IsReadOnly)
                    textBox.SelectAll();
        }
    }

Answer 2

参考这个答案

Textbox SelectAll on tab but not mouse click

您可以修改为...

EventManager.RegisterClassHandler(typeof(System.Windows.Controls.TextBox), System.Windows.Controls.TextBox.GotKeyboardFocusEvent, new KeyboardFocusChangedEventHandler(OnGotKeyboardFocus));

void OnGotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
    var textBox = sender as System.Windows.Controls.TextBox;

    if (textBox != null && !textBox.IsReadOnly && e.KeyboardDevice.IsKeyDown(Key.Tab))
        textBox.SelectAll();
}

您还应注意有关在 LostKeyboardFocus

上清除选择的详细信息

WPF TextBox select 全部位于 Tab 焦点上

WPF TextBox select all on Tab focus

.net

c#

wpf

keyboard-events

wpf-textbox