在CodedUI中声明自定义WPF控件的自定义属性时出现InvalidCastException [英] InvalidCastException when asserting custom properties of custom WPF control in CodedUI
问题描述
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
推荐答案
大家好，
到目前为止我的问题没有反应......
No reactions so far on my question...
让我尝试更一般地提出问题：
Let me try to ask the questions more general:
是否有人使用CodedUI成功断言自定义wpf控件的自定义属性？
Did anyone succeed in asserting custom properties of custom wpf controls using CodedUI?
如果是，您是否有链接t关于它的工作实例或信息？
If yes, do you have a link to a working example or information on it?
关于无效广播问题的详细信息，是从属性中获取实际对象（如颜色或持续时间）可能或者我应该尝试获取 ToString值并对其进行测试？
More into detail on the invalidcast problem, is getting the actual object from a property (like Color or Duration) possible or should I just try to fetch the ToString value and test on that?
谢谢，Jan
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