在CodedUI中声明自定义WPF控件的自定义属性时出现InvalidCastException

您好，

我们希望能够在我们的CodedUI测试中断言我们应用程序中自定义WPF控件的某些自定义属性。

We want to be able to assert in our CodedUI tests on some custom properties from custom WPF controls in our application.

由于CodedUI不支持开箱即用，我正在查看互联网上提供的信息和示例。关于这个主题的一篇好文章来自Mathew Aniyan的博客：

Because this is not supported out of the box by CodedUI, I was looking into information and examples available on the internet. One good article on this subject is from Mathew Aniyan's blog:

http://blogs.msdn.com/b/mathew_aniyan/archive/2011/05/17/custom-wpf-control-s-custom-properties.aspx

我下载了属于此示例的代码，并尝试启动并运行该代码。首先，我构建并安装了扩展。接下来，我做了一个简单的CodedUI测试，尝试在示例
WPF应用程序中验证自定义AnimatedButton中的自定义属性。

I downloaded the code belonging to this example, and tried to get it up and running. First I build and installed the extension. Next I made a simple CodedUI test that tries to verify the custom properties in the custom AnimatedButton in the example WPF application.

我看到的非常好用的是我可以从Coded UI测试构建器的"添加断言"对话框中的AnimatedButton中选择和添加自定义属性的断言。但是，当我使用添加的断言运行我的CodedUI测试时，
因InvalidCastException而失败。它在AnimatedButton.cs的属性AnimatedStartColor中跟随语句失败：

What I see that works very nicely is that I can select and add assertions on the custom properties from the AnimatedButton in the 'Add assertion' dialog box from the Coded UI test builder. However, when I run my CodedUI test with the added assertions, it fails with an InvalidCastException. It fails on following statement in property AnimatedStartColor from AnimatedButton.cs:

从字符串到Color的转换导致InvalidCastException。这是正常的.NET行为（你不能以这种方式将字符串转换为Color对象），所以我不明白它是如何工作的

The cast from a string to a Color is resulting in the InvalidCastException. This is normal .NET behavior (you cannot cast a string this way to a Color object), so I do not understand how this can work at all.

所以，我的问题，我做错了什么，在这种情况下，什么？有没有人设法让这个示例扩展运行？

So, my question, do I do something wrong, in that case, what? Did anybody manage to get this sample extension running?

有关我的环境的一些信息：

Some info on my environment:

• 安装了Feature Pack 2的Visual Studio 2010 Premium
• .NET 4.0

感谢任何帮助！

谢谢，

Jan Lavrijsen

Jan Lavrijsen