的Windows Phone - 尋找帆布

Question

內的子項我有一個列表ñ畫布，我需要找到在C＃中的畫面內TextBlock的屬性，當它被點擊時，的.xaml代碼如下

<Canvas Height="175" Width="360" Background="{StaticResource PhoneAccentBrush}" toolkit:TiltEffect.IsTiltEnabled="True" Name="canvasNote" Tap="canvasNote_Tap"> 
    <toolkit:ContextMenuService.ContextMenu> 
     <toolkit:ContextMenu IsZoomEnabled="False"> 
     <toolkit:MenuItem Header="Open" Click="hubTileOpen_Click"/> 
     <toolkit:MenuItem Header="Edit" Click="hubTileEdit_Click"/> 
     <toolkit:MenuItem Header="Delete" Click="hubTileDelete_Click"/> 
     </toolkit:ContextMenu> 
    </toolkit:ContextMenuService.ContextMenu> 
    <TextBlock Text="{Binding Title}" Margin="12,4,0,0" FontWeight="Bold" FontSize="20" Foreground="White"/> 
    <TextBlock Text="{Binding Details}" Margin="12,28,0,0" TextWrapping="Wrap" Width="352" FontSize="20" Foreground="White"/> 
</Canvas> 

任何想法？

所有幫助表示感謝！

Answer 1

有幾種方法。一種方法是設置的TextBlocks的x:Name財產，並使用FindName方法檢索它們：

<Canvas Height="175" Width="360" Background="{StaticResource PhoneAccentBrush}" toolkit:TiltEffect.IsTiltEnabled="True" Name="canvasNote" Tap="canvasNote_Tap"> 
    <toolkit:ContextMenuService.ContextMenu> 
     <toolkit:ContextMenu IsZoomEnabled="False"> 
     <toolkit:MenuItem Header="Open" Click="hubTileOpen_Click"/> 
     <toolkit:MenuItem Header="Edit" Click="hubTileEdit_Click"/> 
     <toolkit:MenuItem Header="Delete" Click="hubTileDelete_Click"/> 
     </toolkit:ContextMenu> 
    </toolkit:ContextMenuService.ContextMenu> 
    <TextBlock x:Name="Title" Text="{Binding Title}" Margin="12,4,0,0" FontWeight="Bold" FontSize="20" Foreground="White"/> 
    <TextBlock x:Name="Details" Text="{Binding Details}" Margin="12,28,0,0" TextWrapping="Wrap" Width="352" FontSize="20" Foreground="White"/> 
</Canvas> 

然後在Tap事件：

private void canvasNote_Tap(object sender, System.Windows.Input.GestureEventArgs e) 
{ 
    var canvas = (Canvas)sender; 

    var title = (TextBlock)canvas.FindName("Title"); 

    System.Diagnostics.Debug.WriteLine(title.Text); 
} 

但由於您使用的ñ畫布如果不使用數據模板，您可能會遇到名稱衝突。因此，另一種方法是使用Tag屬性來代替：

<Canvas Height="175" Width="360" Background="{StaticResource PhoneAccentBrush}" toolkit:TiltEffect.IsTiltEnabled="True" Name="canvasNote" Tap="canvasNote_Tap"> 
    <toolkit:ContextMenuService.ContextMenu> 
     <toolkit:ContextMenu IsZoomEnabled="False"> 
     <toolkit:MenuItem Header="Open" Click="hubTileOpen_Click"/> 
     <toolkit:MenuItem Header="Edit" Click="hubTileEdit_Click"/> 
     <toolkit:MenuItem Header="Delete" Click="hubTileDelete_Click"/> 
     </toolkit:ContextMenu> 
    </toolkit:ContextMenuService.ContextMenu> 
    <TextBlock Tag="Title" Text="{Binding Title}" Margin="12,4,0,0" FontWeight="Bold" FontSize="20" Foreground="White"/> 
    <TextBlock Tag="Details" Text="{Binding Details}" Margin="12,28,0,0" TextWrapping="Wrap" Width="352" FontSize="20" Foreground="White"/> 
</Canvas> 

而在Tap事件：

private void canvasNote_Tap(object sender, System.Windows.Input.GestureEventArgs e) 
{ 
    var canvas = (Canvas)sender; 

    var title = canvas.Children.OfType<TextBlock>().First(t => (t.Tag as string) == "Title"); 

    System.Diagnostics.Debug.WriteLine(title.Text); 
}