wpf/Silverlight/wp中如何绑定模板中的属性

<Style  TargetType="{x:Type TabItem}" x:Key="EditorTabItemStyle">
<Setter  Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TabItem}">
<Border x:Name="layout" BorderBrush="Gray" BorderThickness="1,1,1,0" Background="{TemplateBinding Background}"
CornerRadius="3" Margin="2,0,2,0">
<Grid Height="20">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition Width="25"/>
</Grid.ColumnDefinitions>
<TextBlock TextAlignment="Center" Text="{TemplateBinding Header}" ToolTip="{TemplateBinding ToolTip}" Tag="{TemplateBinding Tag}" Grid.Column="0" Margin="4,0,3,0"
VerticalAlignment="Center" HorizontalAlignment="Center">
<TextBlock.ContextMenu>
<ContextMenu DataContext="{TemplateBinding Tag}">
<MenuItem Header="保存"  Click="Save_Command" IsEnabled="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type ContextMenu},AncestorLevel=1},Path=DataContext}" >
</MenuItem>
<MenuItem Header="关闭"  Click="Close_Command">
</MenuItem>
</ContextMenu>
</TextBlock.ContextMenu>
</TextBlock>
<Button Content="X" Grid.Column="1"  Height="8" Width="8" Margin="4,1,3,2"
Tag="{TemplateBinding Header}"
Click="Button_Click"
Background="{x:Null}" BorderBrush="{x:Null}" VerticalAlignment="Center">
<Button.Template>
<ControlTemplate >
<Grid>
<Rectangle>
<Rectangle.Fill>
<VisualBrush>
<VisualBrush.Visual>
<Path x:Name="btnPath"
Data="M0 0L10 10M0 10L10 0" Stroke="Gray"
StrokeThickness="1"/>
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.Fill>
</Rectangle>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="btnPath" Property="Stroke" Value="Red"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Button.Template>
</Button>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="White"/>
<Setter TargetName="layout" Property="Margin" Value="2,0,2,-1.5"/>
</Trigger>
<Trigger Property="IsSelected" Value="false">
<Setter Property="Background" Value="LightBlue"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

上面实例代码展示如何将tabitem中的字段绑定到menuitem上,先通过TemplateBinding获取属性值赋值到DataContext属性，然后再通过指定的控件类型和第几个来绑定

IsEnabled="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type ContextMenu},AncestorLevel=1},Path=DataContext}" >

具体说明可以参考：

/content/3897089.html

中的2.9的说明