Question

我想让我的TextBlock可滚动，但我无法使它工作。问题可能在StackPanel？

所以这是代码：

 <Grid Margin="3">
        <Grid.RowDefinitions>
            <RowDefinition Height="152*" />
            <RowDefinition Height="86*" />
            <RowDefinition Height="67*" />
        </Grid.RowDefinitions>

        <ListBox x:Name="lstItems" Margin="3,6,3,0" ItemsSource="{Binding Source={StaticResource rssData}}"
                 SelectedIndex="0">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <Image Width="20" Margin="3" Source="{Binding XPath=enclosure/@url}" />
                        <TextBlock Margin="3" VerticalAlignment="Center" Text="{Binding XPath=title}" FontWeight="Bold" />
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

        <StackPanel Grid.Row="1" Orientation="Vertical" DataContext="{Binding ElementName=lstItems, Path=SelectedItem}" Grid.RowSpan="2">
            <StackPanel.ScrollOwner>
                <ScrollViewer />
            </StackPanel.ScrollOwner>
            <TextBlock Margin="3" FontSize="13" FontWeight="Bold" Text="{Binding XPath=title, Path=InnerText}" />
            <TextBlock Margin="3" Opacity="0.72" Text="{Binding XPath=pubDate}" />
            <ScrollViewer>
                <TextBlock ScrollViewer.CanContentScroll="True" ScrollViewer.HorizontalScrollBarVisibility="Disabled" ScrollViewer.VerticalScrollBarVisibility="Auto" Margin="3" FontStyle="Italic" Text="{Binding XPath=description, Path=InnerText}" TextWrapping="Wrap" TextAlignment="Justify" Height="216" Width="489" AllowDrop="False" Foreground="#FF0000E7" FontFamily="Lucida Sans Unicode" />
            </ScrollViewer>
        </StackPanel>
    </Grid>

问题出在这一部分：

<ScrollViewer>
             <TextBlock ScrollViewer.CanContentScroll="True" ScrollViewer.HorizontalScrollBarVisibility="Disabled" ScrollViewer.VerticalScrollBarVisibility="Auto" Margin="3" FontStyle="Italic" Text="{Binding XPath=description, Path=InnerText}" TextWrapping="Wrap" TextAlignment="Justify" Height="216" Width="489" AllowDrop="False" Foreground="#FF0000E7" FontFamily="Lucida Sans Unicode" />
</ScrollViewer>

这部分代码应该能够滚动。我可以看到垂直滚动条但无法滚动。我希望能够在StackPanel中看到，因为我不允许任何更改，只想阅读。

谢谢

编辑：

<Window x:Class="RssDemo.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="RSS Demo" mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" Height="576" Width="521">
    <Window.Background>
        <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
            <GradientStop Color="#FFE2E2E2" Offset="0" />
            <GradientStop Color="White" Offset="1" />
        </LinearGradientBrush>
    </Window.Background>

    <Window.Resources>
        <XmlDataProvider x:Key="rssData" XPath="//item" Source="http://www.hak.hr/rss/stanje/hr.xml" />
    </Window.Resources>

    <Grid Margin="3">
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="*" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>

        <ListBox x:Name="lstItems" Margin="3,6,3,0" ItemsSource="{Binding Source={StaticResource rssData}}"
                 SelectedIndex="0">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <Image Width="20" Margin="3" Source="{Binding XPath=enclosure/@url}" />
                        <TextBlock Margin="3" VerticalAlignment="Center" Text="{Binding XPath=title}" FontWeight="Bold" />
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

        <StackPanel Grid.Row="1" Orientation="Vertical" DataContext="{Binding ElementName=lstItems, Path=SelectedItem}">
            <TextBlock Margin="3" FontSize="13" FontWeight="Bold" Text="{Binding XPath=title, Path=InnerText}" />
            <TextBlock Margin="3" Opacity="0.72" Text="{Binding XPath=pubDate}" />
        </StackPanel>
        <ScrollViewer Grid.Row="2" HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto">
            <TextBlock ScrollViewer.CanContentScroll="True" ScrollViewer.HorizontalScrollBarVisibility="Disabled" ScrollViewer.VerticalScrollBarVisibility="Auto" Margin="3"
                       FontStyle="Italic" Text="{Binding XPath=description, Path=InnerText}" TextWrapping="Wrap" TextAlignment="Justify" Width="489" AllowDrop="False"
                       Foreground="#FF0000E7" FontFamily="Lucida Sans Unicode" />
        </ScrollViewer>

    </Grid>
</Window>

将此代码粘贴到您的项目中，因为这是我阅读信息的rss链接。只是为了看看你会得到什么

Answer 1

这是我必须做的事情，希望你也可以这样做。首先，我必须将ScrollViewer放在StackPanel周围，然后我必须从Height中移除TextBlock。

     <ScrollViewer HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto">   
        <StackPanel Orientation="Vertical">
           <TextBlock Text="Test" />      
           <TextBlock x:Name="test" Margin="3" FontStyle="Italic" VerticalAlignment="Stretch"
                      TextWrapping="Wrap" TextAlignment="Justify" Width="489" AllowDrop="False" Foreground="#FF0000E7" FontFamily="Lucida Sans Unicode" />      
        </StackPanel>
     </ScrollViewer>

修改

    <Grid Margin="3">
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="*" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>

        <ListBox x:Name="lstItems" Margin="3,6,3,0" ItemsSource="{Binding Source={StaticResource rssData}}"
                 SelectedIndex="0">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <Image Width="20" Margin="3" Source="{Binding XPath=enclosure/@url}" />
                        <TextBlock Margin="3" VerticalAlignment="Center" Text="{Binding XPath=title}" FontWeight="Bold" />
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

        <StackPanel Grid.Row="1" Orientation="Vertical" DataContext="{Binding ElementName=lstItems, Path=SelectedItem}">
            <TextBlock Margin="3" FontSize="13" FontWeight="Bold" Text="{Binding XPath=title, Path=InnerText}" />
            <TextBlock Margin="3" Opacity="0.72" Text="{Binding XPath=pubDate}" />
        </StackPanel>
        <ScrollViewer Grid.Row="2" HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto">   
            <TextBlock Margin="3"
                       FontStyle="Italic" Text="{Binding XPath=description, Path=InnerText}" TextWrapping="Wrap" TextAlignment="Justify" Width="489" AllowDrop="False" 
                       Foreground="#FF0000E7" FontFamily="Lucida Sans Unicode" />      
         </ScrollViewer>        

    </Grid>

有些事情要指出......我修改了你的网格行高度。 *用于表示填充，数字不表示像素。那么你hd = ad的行为与调整大小的行为不同。 Essentiall 187 *并不意味着贪婪的187像素，其中空间至少为187像素，但会根据需要增长。如上所述，将三个行高设置为*，只需给它们每个父高度的第三个。如果您希望第二行是其他行的两倍，请将其他行设置为*并将中间行设置为2 *。由于我看不到您的屏幕，您可以根据需要进行调整。您可能也有兴趣使用自动并将其大小调整为内容。

以下是为我工作的截图： Scrollable TextBlock

TextBlock滚动在WPF中不起作用

1 个答案: