如何使文本框同时监听Keypress-Event和InputBinding [英] How can I make a textbox listening to a Keypress-Event and an InputBinding together

问题描述

我在WPF中的程序中创建了一个登录站点，您在其中输入凭据，然后按Enter或下面的按钮。该按钮具有一个命令（用于View模型绑定）和一个Click-Event（在代码隐藏中提供了一个AutoResetEvent，如果在一秒钟内登录失败，该动摇文本框）。

I created a login-site in my program in WPF where you enter your credentials and then press Enter or the button below. The button has a command (for View Model Binding) and a Click-Event (I got an AutoResetEvent in Code Behind that shakes the Textbox if the login wasn't successful within a second).

现在我在文本框中尝试了相同的操作：命令和事件。所以此刻是我的文本框：

Now I tried the same with the Textbox: Command and Event. So this is my Textbox at the moment:

<TextBox Margin="0,0,0,10" Text="{Binding Username}" KeyDown="MainWindow_KeyDown">
                <TextBox.InputBindings>
                    <KeyBinding
                            Key="Enter"
                            Command="{Binding KeyPressCommand}" />
                </TextBox.InputBindings>
            </TextBox>

这是我的按钮：

<Button Command="{Binding ConnectCommand}" Content="Connect" Background="#E9712F" Margin="0,10,0,0" FontFamily="Arial" FontWeight="Bold" Foreground="White" Cursor="Hand" Click="Button_Click"/>

该按钮起作用，它触发事件并发送命令。但是文本框完全忽略了事件，只是将命令发送到视图模型。

The button works, it triggers the event and sends the command. But the Textbox completely ignores the Event and just sends the Command to the View Model.

是否可以同时触发事件和命令？

Is there a way to trigger both, event and command?

推荐答案

代替 KeyDown 事件使用 PreviewKeyDown

更新

KeyDown 事件，但是 PreviewKeyDown 事件也支持这些键。

The KeyDown event is not raised for navigational keys that would normally be handled by WPF, but the PreviewKeyDown event also support those keys.

可能有帮助：什么是WPF预览事件？

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