Question

我正在开发简单的聊天WP应用程序。我使用Coding4Fun工具包中的ChatBubble文本块控件。当用户用手指按住并向上/向下移动时，我想让这个控制滚动。我通过将ContentControl放在ScrollViewer控件中来改变控件样式，但没有帮助。它只是负责任＆＃34;现在但我还是不能在里面滚动。

<Border x:Name="EnabledBorder" 
    Grid.Row="1"
    Padding="{TemplateBinding Padding}"
    BorderThickness="{TemplateBinding BorderThickness}" 
    BorderBrush="{TemplateBinding BorderBrush}"
    Background="{TemplateBinding Background}">
    <Grid>
        <ContentControl
            x:Name="HintContentElement"
            BorderThickness="0" 
            Background="Transparent"
            Foreground="Gray"
            HorizontalContentAlignment="Stretch"
            VerticalContentAlignment="Stretch"
            Content="{TemplateBinding Hint}" />
            <ScrollViewer>
                <ContentControl 
                    x:Name="ContentElement" 
                    Margin="1 2"
                    MaxHeight="170"
                    BorderThickness="0" 
                    Background="Transparent"
                    HorizontalContentAlignment="Stretch"
                    VerticalContentAlignment="Stretch" />
            </ScrollViewer>
    </Grid>
</Border>

这是XAML页面

<c4f:ChatBubbleTextBox 
    InputScope="Text" 
    TextChanged="ChatBubbleTextBox_TextChanged" 
    Text="{Binding CommentText, Mode=TwoWay}" 
    ChatBubbleDirection="LowerRight" 
    TextWrapping="Wrap" 
    AcceptsReturn="True"
    Style="{StaticResource themeAwareChatBubbleStyle}" />

Answer 1

修复该问题：取代

        <ScrollViewer>
            <ContentControl 
                x:Name="ContentElement" 
                Margin="1 2"
                MaxHeight="170"
                BorderThickness="0" 
                Background="Transparent"
                HorizontalContentAlignment="Stretch"
                VerticalContentAlignment="Stretch" />
        </ScrollViewer>

与

        <ScrollViewer
                x:Name="ContentElement" 
                Margin="1 2"
                MaxHeight="170"
                BorderThickness="0" 
                Background="Transparent"
                HorizontalContentAlignment="Stretch"
                VerticalContentAlignment="Stretch" />

使ChatBubbleTextBox（TextBox）内容可滚动

1 个答案: