我正在使用 VS2008 EE SP1 + WPF + XAML。一开始我添加了对它的引用:
xmlns:vsm="clr-namespace:System.Windows;assembly=System.Windows"
编译时出现此错误:
<vsm:VisualStateManager.VisualStateGroups>
<vsm:VisualStateGroup x:Name="CommonStates">
<vsm:VisualStateGroup.Transitions>
<vsm:VisualTransition To="MouseOver" Duration="0:0:0.1"/>
<vsm:VisualTransition To="Pressed" Duration="0:0:0.1"/>
</vsm:VisualStateGroup.Transitions>
<vsm:VisualState x:Name="Normal"/>
<vsm:VisualState x:Name="MouseOver">
<Storyboard>
<DoubleAnimation Duration="0:0:0.1" Storyboard.TargetName="Highlight" Storyboard.TargetProperty="Opacity" To="1"/>
</Storyboard>
有人知道原因和可能的解决方法吗?