Radtreeview使其只在某层节点上显示右键菜单（telerik控件）

<Control.Resources>
<telerik:RadContextMenu x:Key="ContextMenu">
<telerik:RadMenuItem Header="样品清点" Click="SampleCheck_Click" />
<telerik:RadMenuItem Header="样品室内描述" Click="SampleStationDes_Click" />
<telerik:RadMenuItem Header="室内样品" Click="SampleIndoorDescription_Click" />
<telerik:RadMenuItem Header="添加样品" Click="AddSample_Click" />
</telerik:RadContextMenu>
<DataTemplate x:Key="Station">
<TextBlock Text="{Binding Name}" Width="120" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
</DataTemplate>
<HierarchicalDataTemplate x:Key="Leg" ItemTemplate="{StaticResource Station}" ItemsSource="{Binding Stations}">
<TextBlock Text="{Binding Name}"/>
</HierarchicalDataTemplate>
<HierarchicalDataTemplate x:Key="Voyage" ItemTemplate="{StaticResource Leg}" ItemsSource="{Binding Legs}">
<TextBlock Text="{Binding Code}"/>
</HierarchicalDataTemplate>
<Style x:Key="VoyageItemContainerStyle" TargetType="{x:Type telerik:RadTreeViewItem}">
<Setter Property="DefaultImageSrc" Value="sailing-ship-icon.png"/>
</Style>
<Style x:Key="LegItemContainerStyle" TargetType="{x:Type telerik:RadTreeViewItem}">
<Setter Property="DefaultImageSrc" Value="Leg-icon.png"/>
</Style>
<Style x:Key="StationItemContainerStyle" TargetType="{x:Type telerik:RadTreeViewItem}">
<Setter Property="DefaultImageSrc" Value="Station-icon.png" />
<Setter Property="telerik:RadContextMenu.ContextMenu" Value="{StaticResource ResourceKey=ContextMenu}" />
<EventSetter Event="TreeViewItem.PreviewMouseRightButtonDown" Handler="TreeViewItemStation_PreviewMouseRightButtonDown"/>
</Style>
<Local:TreeExplorerContainStyleSelector x:Key="myContainerStyleSelector"
VoyageStyle="{StaticResource VoyageItemContainerStyle}"
LegStyle="{StaticResource LegItemContainerStyle}"
StationStyle="{StaticResource StationItemContainerStyle}"/>
</Control.Resources>
<Grid>
<telerik:RadTreeView x:Name="ExplorerTreeView"
VerticalAlignment="Stretch"
HorizontalAlignment="Stretch"
IsRootLinesEnabled="True"
MinHeight="200"
IsLoadOnDemandEnabled="True"
ImagesBaseDir="/Images/Icons/"
BorderBrush="SkyBlue"
BorderThickness="2"
ItemsSource="{Binding TreeExplorerDataSource, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
ItemTemplate="{StaticResource Voyage}"
ItemPrepared="ExplorerTreeView_ItemPrepared"
ItemContainerStyleSelector="{StaticResource myContainerStyleSelector}"
LoadOnDemand="ExplorerTreeView_LoadOnDemand">
</telerik:RadTreeView>
</Grid>
</UserControl>

使用系统自带的contextmenu则需要在treeview上绑定，并在后台控制。