Google喜欢Silverlight中的SearchBox

问题描述

我已经在Silverlight中创建了一个Google的SearchBox控件。这意味着，当我在框中输入时，DropDownListBox出现在SearchBox的正下方，显示与我在searchbox中键入的文本（即AutoComplete功能）匹配的所有项目，就像这样：

现在，我想添加一个功能：我想让DropDownListBox消失，一旦用户点击外面，或屏幕上的任何地方。在其他控件中，我无法处理 MouseLeftButtonDown （或任何这样的事件），因为用户可以点击任何地方，包括非银光区域。任何人都可以建议我该怎么做才能实现这一目标？

所以我的问题基本是：

如何知道用户是否刚刚点击，点击事件发生在特定控件之外？

请注意， AutoCompleteBox 不符合我的目的。所以我不能使用它。

解决方案

我有一种感觉，使用事件可以解决你的问题。

I've created a Google like SearchBox control in Silverlight. That means, as I type in the box, a DropDownListBox appears just below the SearchBox, showing all the items that match with the text I've typed in searchbox so far (i.e AutoComplete feature), exactly like this:

Now, I want to add a functionality to it : I want to make the DropDownListBox to disappear, as soon as user clicks outside it, or anywhere on the screen. I cannot handle MouseLeftButtonDown (or any such event) in other controls, to accomplish this, because users can click anywhere, including non-silverlight region. Can anybody suggest me what should I do to achieve this?

So my question basically is:

How to know if user has just clicked and the click event occurred outside a particular control?

Please note that AutoCompleteBox doesn't serve my purpose. So I cannot use it.

解决方案

I have a feeling that working with LostFocus event can solve your problem.

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