WPF - 扩展器中的滚动列表框

发布于 2024-08-09 15:07:30 字数 1071 浏览 8 评论 0原文

我有一个 Expander，我想在其中添加 ListBox。当我打开 Expander 时，ListBox只是扩展到屏幕之外（而不是扩展以填充可用的内容然后滚动）。

这是我的 XAML：

<DockPanel Margin="266.25,0,455,12" Name="dockPanel1">
    <StackPanel>
        <Expander Header="expander1" Name="expander1" Width="150" HorizontalAlignment="Left">
            <Grid>
                <Label>Testing</Label>
                <ScrollViewer>
                    <ListBox Name="lstBox"  FontSize="14" SelectionChanged="lstBox_SelectionChanged" />
                </ScrollViewer>
            </Grid>
        </Expander>
        <Expander Header="expander2" Name="expander2" Width="150" HorizontalAlignment="Left">
            <Grid >

            </Grid>
        </Expander>
    </StackPanel>
</DockPanel>

当 Expander1 打开时，它只是扩展到 ListBox 的大小（超出屏幕）。如果我在网格上设置尺寸（Height="275"），那么它不会随窗口调整大小。

我希望它拉伸到窗口的大小，但仅此而已。有办法做到这一点吗？

原文

I have an Expander that I want to have a ListBox in. When the I open the Expander, the ListBox just expands off the screen (rather than expanding to fill what is available and then scrolling).

Here is my XAML:

<DockPanel Margin="266.25,0,455,12" Name="dockPanel1">
    <StackPanel>
        <Expander Header="expander1" Name="expander1" Width="150" HorizontalAlignment="Left">
            <Grid>
                <Label>Testing</Label>
                <ScrollViewer>
                    <ListBox Name="lstBox"  FontSize="14" SelectionChanged="lstBox_SelectionChanged" />
                </ScrollViewer>
            </Grid>
        </Expander>
        <Expander Header="expander2" Name="expander2" Width="150" HorizontalAlignment="Left">
            <Grid >

            </Grid>
        </Expander>
    </StackPanel>
</DockPanel>

When Expander1 is opened then it just expands to the size of the ListBox (off the screen). If I put a size on the grid (Height="275"), then it does not resize with the window.

I want it to stretch to the size of the window, but no more. Is there a way to do that?

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假装爱人 2024-08-16 15:07:30

您需要设置 ScrollViewer 的 Height 属性，否则它将与其子级的大小相同。以下是一些更新的 XAML：

<DockPanel>
    <StackPanel>
        <Expander Header="expander1" Width="150" HorizontalAlignment="Left">
            <StackPanel>
                <Label>Testing</Label>
                <ScrollViewer Height="75">
                    <ListBox>

                    </ListBox>
                </ScrollViewer>
            </StackPanel>
        </Expander>
        <Expander Header="expander2">
        </Expander>
    </StackPanel>
</DockPanel>

You need to set the Height property of ScrollViewer otherwise it will be the same size as it's child. Here is some updated XAML:

<DockPanel>
    <StackPanel>
        <Expander Header="expander1" Width="150" HorizontalAlignment="Left">
            <StackPanel>
                <Label>Testing</Label>
                <ScrollViewer Height="75">
                    <ListBox>

                    </ListBox>
                </ScrollViewer>
            </StackPanel>
        </Expander>
        <Expander Header="expander2">
        </Expander>
    </StackPanel>
</DockPanel>

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