当gridview项目超出显示高度时,不会出现垂直滚动条

Question

我将以下语句放在xaml的网格的第二行中:

<ScrollViewer VerticalScrollBarVisibility="Auto" Grid.Row="1">
     <ListView Name="listView" Margin="5" Grid.Row="1">

                <ListView.View>
                    <GridView AllowsColumnReorder="True">
                        <GridViewColumn DisplayMemberBinding="{Binding Path=DateTime}" Header="Date Time" Width="140"/>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=Vehicle}" Header="Vehicle" Width="130"/>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=AlarmType}" Header="Alarm Type" Width="100"/>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=Direction}" Header="Direction" Width="100"/>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=Speed}" Header="Speed" Width="100"/>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=Alarmed}" Header="Alarmed" Width="100"/>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=LoadType}" Header="Load Type" Width="100"/>
                        <GridViewColumn DisplayMemberBinding="{Binding Path=Status}" Header="Status" Width="110"/>
                    </GridView>
                </ListView.View>
            </ListView>     
        </ScrollViewer>
 </Grid>

我将listView.ItemSource绑定到代码中定义的ObservableCollection,以将数据填充到列表中.当添加到GridView的项目数超过列表视图高度时,垂直滚动条没有像我在XAML中指定的那样出现.我做错了什么？非常感谢您的意见.谢谢.

Answer 1

这个对我有用:

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <ScrollViewer VerticalScrollBarVisibility="Auto" Grid.Row="1">
            <ListView Name="listView" Margin="5" Grid.Row="1">

                <ListView.View>
                    <GridView AllowsColumnReorder="True">
                        <GridViewColumn DisplayMemberBinding="{Binding Path=.}" Header="Whatever" Width="140"/>
                    </GridView>
                </ListView.View>
            </ListView>
        </ScrollViewer>
    </Grid>
</Window>

然而,ListView控制模板包含一个ScrollViewer已经使得ScrollViewer会出现内部的ListView需要作为当.为什么你需要将它包装在另一个？