System.Windows.VisualState同时存在于2个文件中，急，编译不过！！

Question

错误 2 类型“System.Windows.VisualState”同时存在于“c:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\PresentationFramework.dll”和“d:\fsti\SpossWpf\sposs5_cs\SPOSS2012\SPOSS2012\bin\Debug\WPFToolkit.dll”中 D:\fsti\SpossWpf\sposs5_cs\SPOSS2012\SPOSS2012\SpossUserControl\PhotoFrame.xaml

错误如上。System.Windows命名空间在2个DLL中均存在，在xaml中，定义了xmlns:vsm="clr-namespace:System.Windows;assembly=WPFToolkit"（也尝试了定义为：xmlns:vsm="clr-namespace:System.Windows;assembly=PresentationFramework"）

引用VisualState的时候：<vsm:VisualState x:Name="ImageChanged2"/>

编译器还是会混淆，为何？求解答

Answer 1

你好，

尝试清理一下你的application或者Solution（在solution Explorer窗口中单击application- 右键-clean或者单击solution-右键-clean solution ）， 然后在你的xaml中声明如下：

  xmlns:vsm="clr-namespace:System.Windows;assembly=PresentationFramework"

测试代码如下：

   <vsm:VisualStateManager.VisualStateGroups>
            <vsm:VisualStateGroup>
                <vsm:VisualState x:Name="ImageChanged2"/>
            </vsm:VisualStateGroup>
        </vsm:VisualStateManager.VisualStateGroups>

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Lisa Zhu [MSFT]
MSDN Community Support | Feedback to us
Develop and promote your apps in Windows Store
Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 2

你好，

我临时将我的回复标记为答案，如果该回复对你没有帮助的话请随时 回来取消标记答案。 感谢你的理解与支持。

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Lisa Zhu [MSFT]
MSDN Community Support | Feedback to us
Develop and promote your apps in Windows Store
Please remember to mark the replies as answers if they help and unmark them if they provide no help.