WPF autocompletebox和确认键 [英] WPF autocompletebox and the enter key

问题描述

我试图让WPF AutoCompleteBox当我preSS回车键提高KeyDown事件。我使用的是正常的KeyDown挂钩，这适用于一切，但回车键似乎。有谁知道我怎么能解决这个问题？

I am trying to get the WPF AutoCompleteBox to raise the KeyDown event when I press the enter key. I am using the normal KeyDown hook, which works for everything but the enter key it seems. Does anyone know how I can fix this?

推荐答案

您可以继承 AutoCompleteBox ，增加对<大骨节病>输入事件。

You could inherit the AutoCompleteBox, adding an event for Enter.

public class MyAutoCompleteBox : AutoCompleteBox
{
    public override void OnKeyDown(KeyEventArgs e)
    {
        base.OnKeyDown(e);
        if(e.Key == Key.Enter) RaiseEnterKeyDownEvent();
    }

    public event Action<object> EnterKeyDown;
    private void RaiseEnterKeyDownEvent()
    {
        var handler = EnterKeyDown;
        if(handler != null) handler(this);
    }
}

在你的消费类，您可以订阅：

In your consuming class, you can subscribe:

public void Subscribe()
{
    autoCompleteBox.EnterKeyDown += DoSomethingWhenEnterPressed;
}

public void DoSomethingWhenEnterPressed(object sender)
{

}

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