动态更改ListView ItemsPanel高度

Posted 2021-04-01

我想在它包含的项目数增加时动态更改ListView项目面板高度。

这是我的ListView在XAML中的设置方式：

<ListView x:Name="listANALOG" BorderThickness="0" Padding="0" Margin="4,4,4,4" Background="MediumPurple" ScrollViewer.HorizontalScrollBarVisibility="Disabled" Grid.Row="2" Grid.ColumnSpan="2">
    <ListView.ItemTemplate>
        <DataTemplate>
            <Border BorderBrush="DarkOrange" Background="{Binding EtatCMD}" BorderThickness="2"  MouseDown="WrapPanel_MouseDown" Margin="-4,0,-2,0">
                <DockPanel  Width="65" Height="65" Margin="2" LastChildFill="True" >
                    <StackPanel DockPanel.Dock="Top" Orientation="Horizontal" Height="10" IsHitTestVisible="False" Margin="0">
                        <Ellipse Fill="{Binding Trigger1}" Height="10" Margin="2,0,0,0" Width="10" />
                        <Ellipse Fill="{Binding Trigger2}" Height="10" Margin="2,0,0,0" Width="10" Opacity="{Binding ShowTrigger2}"/>
                        <Ellipse Fill="{Binding Trigger3}" Height="10" Margin="2,0,0,0" Width="10" Opacity="{Binding ShowTrigger3}"/>
                    </StackPanel>
                    <Label DockPanel.Dock="Top" Content="{Binding Name}"  FontSize="10" Margin="0" FontWeight="DemiBold" HorizontalAlignment="Left" VerticalAlignment="Center" Padding="0" ToolTip="Used in :" ToolTipOpening="Label_ToolTipOpening_2"/>
                    <Label DockPanel.Dock="Bottom" Content="{Binding CommandeStr}" Margin="0" Padding="0" HorizontalAlignment="Left" VerticalAlignment="Bottom" IsHitTestVisible="False"/>
                    <TextBox  MaxLength="14" Text="{Binding UserName}" Margin="0" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Background="Transparent" BorderThickness="0" Padding ="0" VerticalAlignment="Top" TextWrapping="Wrap"/>
                </DockPanel>
            </Border>
        </DataTemplate>
    </ListView.ItemTemplate>
    <ListView.ItemsPanel>
        <ItemsPanelTemplate>
            <WrapPanel x:Name="pnlAnalog" Orientation="Vertical" VerticalAlignment="Stretch" Height="185"/>
        </ItemsPanelTemplate>
    </ListView.ItemsPanel>
</ListView>

我的ListView“listANALOG”填充在后面的代码中，如下所示：

listANALOG.ItemsSource = hConfig.listANALOG;

我的问题是我无法访问WrapPanel的高度（pnlAnalog）来增加它。

我不会设计像这样的IHM，但它是一个旧软件，我们没有足够的资源来重新编写它。

谢谢您的帮助。

答案

你可以使用WrapPanel this方法获得对FindChild<T>的引用：

WrapPanel wrapPanel = FindChild<WrapPanel>(listANALOG, "pnlAnalog");
wrapPanel.Height = 500;