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<HierarchicalDataTemplate x:Key="TreeNodes" ItemsSource="{Binding Path=Childs,Mode=OneWay}" >
<StackPanel Orientation="Horizontal" Height="24" DataContext="{Binding}">
<TextBlock Text="{Binding Name}" VerticalAlignment="Center" FontSize="12" >
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseLeftButtonUp">
<i:InvokeCommandAction Command="{Binding SelectCommand}"
CommandParameter="{Binding Id}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
</TextBlock>
</StackPanel>
按照button中binding 的方式書寫TreeView中的綁定，实际运行中将会没有想过，原因是TreeView中Command默认绑定的是TreeView的DataContext,实际只需要制定正确的Command的源即可。
<HierarchicalDataTemplate x:Key="TreeNodes" ItemsSource="{Binding Path=Childs,Mode=OneWay}" >
<StackPanel Orientation="Horizontal" Height="24" DataContext="{Binding}">
<TextBlock Text="{Binding Name}" VerticalAlignment="Center" FontSize="12" >
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseLeftButtonUp">
<i:InvokeCommandAction Command="{Binding Path=DataContext.SelectCommand,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type Page}}}"
CommandParameter="{Binding Id}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
</TextBlock>
</StackPanel>
TreeView 中 MVVM Command Binding
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原文地址：http://www.cnblogs.com/CoreXin/p/4428978.html
