Question

我希望下面的TreeView能够扩展以填充它所包含的当前行，但是，我无法弄清楚这是如何完成的。它只是扩展以适应树项。可以这样做，如果是这样，怎么办？

由于

<Window x:Class="WorkoutUI.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Name="Window" Height="350" Width="525">
    <Grid Name="Root_Grid">
        <Grid.RowDefinitions>
            <RowDefinition Height="10" />
            <RowDefinition Height="*" Name="Root_Grid_Row_2" />
            <RowDefinition Height="10" />            
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="5" />
            <ColumnDefinition Width="150" />
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="5" />
        </Grid.ColumnDefinitions>

        <TreeView Grid.Column="1" Grid.Row="1" VerticalAlignment="Top" VerticalContentAlignment="Stretch" Width="{Binding Width, ElementName=Root_Grid, Mode=Default}">
            <TreeViewItem Header="Workouts" IsExpanded="True">
                <TreeViewItem Header="Workout1" />
                <TreeViewItem Header="Workout2" />
                <TreeViewItem Header="Workout3" IsExpanded="True">
                    <TreeViewItem Header="WorkoutSub1" />
                    <TreeViewItem Header="WorkoutSub2" />
                    <TreeViewItem Header="WorkoutSub3" />
                </TreeViewItem>    
                <TreeViewItem Header="Workout4" />
                <TreeViewItem Header="Workout5" />
                <TreeViewItem Header="Workout6" />                
            </TreeViewItem>            
        </TreeView>
    </Grid>
</Window>

Answer 1

你有VerticalAlignment="Top"，这意味着TreeView只会像它想要的那样高，并且会被放置在可用空间的顶部。您希望将VerticalAlignment设置为Stretch，以便占用所有可用的垂直空间。由于这是默认设置，因此您只需删除属性：

<TreeView Grid.Column="1" Grid.Row="1" Width="{Binding Width, ElementName=Root_Grid, Mode=Default}">

XAML TreeView垂直展开

1 个答案: