wpf TempLateBinding得问题

[可爱的爽爽儿]

我想在屏幕显示Label，鼠标移上去变成textBox ，具体代码如下
<Style x:Key="LabelTemp" TargetType="Label">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Label">
<Grid>
<TextBox x:Name="tb" Text="{TemplateBinding Content}" Visibility="Hidden" Width="40" Height="20"
HorizontalAlignment="Center" VerticalAlignment="Top" FontSize="12"></TextBox>
<Label x:Name="lab" Content="{TemplateBinding Content}" Width="40" Height="30"
HorizontalAlignment="Center" VerticalAlignment="Bottom" FontSize="12" ></Label>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="tb" Property="Visibility" Value="Visible">
</Setter>
<Setter TargetName="lab" Property="Visibility" Value="Hidden"></Setter>

</Trigger>

</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

可是如何是改变了TextBox的值怎么使Label改变，我想应该是TempLateBinding绑定到TextBox上
但和Binding不一样，请高手指教，

[cppfaq]

[code=XAML]<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300" Loaded="Window_Loaded">
<Window.Resources>
<Style x:Key="LabelTemp" TargetType="Label">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Label">
<Grid >
<TextBox x:Name="tb" Text="{TemplateBinding Content}" Visibility="Hidden" Width="40" Height="20"
HorizontalAlignment="Center" VerticalAlignment="Top" FontSize="12"></TextBox>
<Label x:Name="labReal" Content="{TemplateBinding Content}" Width="40" Height="30"
HorizontalAlignment="Center" VerticalAlignment="Top" FontSize="12" ></Label>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="tb" Property="Visibility" Value="Visible">
</Setter>
<Setter TargetName="labReal" Property="Visibility" Value="Hidden"></Setter>
</Trigger>
<Trigger Property="IsMouseOver" Value="false">
<Setter TargetName="labReal" Property="Content" Value="{Binding ElementName=tb,Path=Text}"></Setter>
</Trigger>

</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="104*" />
<ColumnDefinition Width="174*" />
</Grid.ColumnDefinitions>
<Label Name="lab" Style="{StaticResource LabelTemp}" VerticalAlignment="Top">Demo Label
</Label>
</Grid>
</Window>
[/code]

[可爱的爽爽儿]

试试，谢谢