使用Dependency屬性基於WPF中另一個TextBock的值更新TextBlock的值

Question

在我的XAML中，我有以下兩個textBlocks

 <TextBlock Name="tbGeneratedSignature" TextWrapping="Wrap" Margin="2,2,0,0" Height="auto" Width="390"  Foreground="Black" TextDecorations="None" VerticalAlignment="Top" Focusable="False"/>


<TextBlock Name="tbSignatureText" TextWrapping="Wrap" Margin="5" Height="auto" Width="440" Foreground="Black"  />

在tbGeneratedSignature.Text的基礎上，我想使用XAML而不是使用C＃為tbSignatureText.Text分配相同的值。

Answer 1

你考慮過綁定嗎？

<TextBlock Name="tbSignatureText" 
           Text="{Binding ElementName=tbGeneratedSignature, Path=Text, UpdateSourceTrigger=PropertyChanged}" 
           TextWrapping="Wrap" 
           Margin="5" 
           Height="auto" 
           Width="440" 
           Foreground="Black"  />

Answer 2

<TextBlock Name="tbGeneratedSignature" TextWrapping="Wrap" Margin="2,2,0,0" Height="auto" Width="390"  Foreground="Black" TextDecorations="None" VerticalAlignment="Top" Focusable="False"/>


<TextBlock Name="tbSignatureText" Text="{Binding ElementName=tbGeneratedSignature, Path=Text}" TextWrapping="Wrap" Margin="5" Height="auto" Width="440" Foreground="Black"  />