滾動查看器內不能滾動

Question

當我添加標題面板時，我失去了滾動功能。請幫我恢復它。

<StackPanel> 

      <Grid HorizontalAlignment="Left"> 
      <Grid.RowDefinitions> 
       <RowDefinition Height="Auto"/> 
       <RowDefinition Height="Auto"/> 
      </Grid.RowDefinitions> 
      <TextBlock .../> 
      <TextBlock ... > 
      </TextBlock> 
     </Grid> 
      <ScrollViewer Grid.Row="1" x:Name="_ScrollViewer"> 
      <StackPanel ScrollViewer.VerticalScrollBarVisibility="Disabled"> 
       <Grid ScrollViewer.VerticalScrollBarVisibility="Disabled"> 
         <Grid.RowDefinitions> 
          <RowDefinition Height="auto" /> 
          <RowDefinition Height="auto" /> 
         </Grid.RowDefinitions> 
         <ListBox x:Name="listmy" 
           Grid.Row="0" ScrollViewer.VerticalScrollBarVisibility="Disabled" 
           > 
          <ListBox.ItemTemplate> 
           <DataTemplate> 
            <local:TypeMessage Content="{Binding}"> 
             <local:TypeMessage.Me> 
              <DataTemplate> 
               ... 
              </DataTemplate> 
             </local:TypeMessage.Me> 
             <local:TypeMessage.Other> 
              <DataTemplate> 
               ... 
              </DataTemplate> 
             </local:TypeMessage.Other> 
            </local:TypeMessage> 
           </DataTemplate> 
          </ListBox.ItemTemplate> 
          <ListBox.ItemsPanel> 
           <ItemsPanelTemplate> 
            <VirtualizingStackPanel /> 
           </ItemsPanelTemplate> 
          </ListBox.ItemsPanel> 
         </ListBox> 
         <Grid Grid.Row="3" ScrollViewer.VerticalScrollBarVisibility="Disabled"> 
          <Grid.RowDefinitions> 
           <RowDefinition Height="auto" /> 
           <RowDefinition Height="auto" /> 
          </Grid.RowDefinitions> 
          <tbox:WatermarkTextBox 
                ScrollViewer.VerticalScrollBarVisibility="Disabled" 
                /> 
         </Grid> 
        </Grid> 
       </StackPanel> 
</ScrollViewer> 
    </StackPanel> 


</phone:PhoneApplicationPage> 

Answer 1

問題在StackPanel中。

<Grid> 
    <Grid.RowDefinitions> 
     <RowDefinition Height="Auto"/> 
     <RowDefinition /> 
    </Grid.RowDefinitions> 
    <Grid Grid.Row="0" HorizontalAlignment="Left"> 
     <Grid.RowDefinitions> 
      <RowDefinition Height="Auto"/> 
      <RowDefinition Height="Auto"/> 
     </Grid.RowDefinitions> 
     <TextBlock /> 
     <TextBlock > 
      <TextBlock.Foreground> 
       <SolidColorBrush Color="{StaticResource PhoneContrastBackgroundColor}"/> 
      </TextBlock.Foreground> 
     </TextBlock> 
    </Grid> 
    <ScrollViewer ScrollViewer.VerticalScrollBarVisibility="Visible" Grid.Row="1" x:Name="_ScrollViewer"> 
      <Grid ScrollViewer.VerticalScrollBarVisibility="Disabled"> 
        <Grid.RowDefinitions> 
         <RowDefinition Height="auto" /> 
         <RowDefinition Height="auto" /> 
        </Grid.RowDefinitions> 
       <ListBox x:Name="listmy" ScrollViewer.VerticalScrollBarVisibility="Disabled" 
          Grid.Row="0"> 
         <ListBox.ItemTemplate> 
          <DataTemplate> 
           <local:TypeMessage Content="{Binding}"> 
            <local:TypeMessage.Me> 
            ... 
            </local:TypeMessage.Me> 
            <local:TypeMessage.Other> 
            ... 
            </local:TypeMessage.Other> 
           </local:TypeMessage> 
          </DataTemplate> 
         </ListBox.ItemTemplate> 
         <ListBox.ItemsPanel> 
          <ItemsPanelTemplate> 
           <VirtualizingStackPanel /> 
          </ItemsPanelTemplate> 
         </ListBox.ItemsPanel> 
        </ListBox> 
       <StackPanel Grid.Row="1" ScrollViewer.VerticalScrollBarVisibility="Disabled"> 
        <tbox:WatermarkTextBox /> 
       </StackPanel> 
      </Grid>