问题描述
根据文档（一个MessageDialog可以获得
最多三个命令，这个工作原理在Windows应用商店应用上。
According to the documentation (http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.popups.messagedialog.aspx), a MessageDialog can take up to three commands, and this works well on Windows Store apps.
但是，在Windows Phone通用应用程序（即XAML）上，对带有三个命令的MessageDialog的任何调用都会导致System.ArgumentException并显示以下消息：'Value does不在预期的范围内。'
However, on a Windows Phone Universal App (i.e. XAML), any call to MessageDialog with three commands results in a System.ArgumentException with this message: 'Value does not fall within the expected range.'
它似乎不是命令的长度问题;它似乎只是手机上MessageDialog的限制，或者是一个bug。目前尚不清楚文档是否出错（即它应该在Windows Phone中指定限制）或
MessageDialog是否存在问题。
It doesn't appear to be the length of the commands that is the problem; it just seems to be a limitation of MessageDialog on the phone, or a bug. It isn't clear if the documentation is in error (i.e. it should specify a limitation in Windows Phone) or if MessageDialog has the problem.
推荐答案
上面的链接不起作用，是的，在手机应用程序中，它最多只需要2个命令。可能是没有预料到的。由于长度问题，电话中的命令只有2个。
The above Link doesn't work and yeah in phone app it can take up to only 2 commands. May be expected no. of command in phone is only 2 due to the length issues.
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