WPF列列表虚拟化与列

Question

我想创建一个有顺利滚动的列表视图（5'000项+）。 我在inet中发现了一个解决方案，即“virtualizationmode = Recycling”可以做到这一点。

嗯，我完全迷路了，因为我在我的旧应用中使用了gridview。 现在要虚拟化列表，我不能再使用gridview了，因为我在另一篇文章中读到过。

我怎样才能使它工作？我想使用observalcollection绑定项目，我需要一个Header。

这里是我的老列表视图与GridView控件：

<ListView x:Name="ListView_Main" Grid.Column="4" Grid.RowSpan="18" BorderBrush="#FFE87E00" Foreground="#FFE87E00" Background="Transparent" VirtualizingStackPanel.IsVirtualizing="true" VirtualizingStackPanel.VirtualizationMode="Recycling"> 
       <ListView.View> 
        <GridView x:Name="GridView_ListHeader" AllowsColumnReorder="False"> 
         <!--CheckBox--> 
         <GridViewColumn x:Name="GridViewColumn_Check" Width="25" Header=""><GridViewColumn.CellTemplate><DataTemplate><StackPanel> 
          <!---Tag = Index--> 
          <CheckBox IsChecked="{Binding Checked}" Tag="{Binding Index}"/></StackPanel></DataTemplate></GridViewColumn.CellTemplate> 
         </GridViewColumn> 

         <!--CheckImage--> 
         <GridViewColumn x:Name="GridViewColumn_CheckFake" Width="25" Header=""><GridViewColumn.CellTemplate><DataTemplate><StackPanel> 
             <Grid Height="17" Width="17" VerticalAlignment="Center" HorizontalAlignment="center"> 
              <Canvas Background="{Binding Color}" Margin="3" Cursor="Hand" Tag="{Binding Index}" MouseLeftButtonDown="Canvas_ListIcon_MouseLeftButtonDown" MouseEnter="Canvas_ListIcon_MouseEnter" MouseLeave="Canvas_ListIcon_MouseLeave"><Canvas.OpacityMask> 
                <ImageBrush Stretch="UniformToFill" ImageSource="{Binding ImageCheckbox}" RenderOptions.BitmapScalingMode="NearestNeighbor" RenderOptions.EdgeMode="Aliased"/></Canvas.OpacityMask></Canvas></Grid></StackPanel></DataTemplate></GridViewColumn.CellTemplate> 
         </GridViewColumn> 

         <!--Source--> 
         <GridViewColumn x:Name="GridViewColumn_Icon" Header="" Width="25"><GridViewColumn.CellTemplate><DataTemplate><StackPanel> 
             <Grid Height="17" Width="17" VerticalAlignment="Center" HorizontalAlignment="center"> 
              <Canvas Background="{Binding Color}" Tag="{Binding Index}" Margin="3" MouseEnter="Canvas_SourceIcon_MouseEnter" MouseLeave="Canvas_SourceIcon_MouseLeave"><Canvas.OpacityMask> 
                <ImageBrush ImageSource="{Binding ImageSource}" Stretch="UniformToFill" RenderOptions.BitmapScalingMode="NearestNeighbor" RenderOptions.EdgeMode="Aliased"/></Canvas.OpacityMask></Canvas></Grid></StackPanel></DataTemplate> </GridViewColumn.CellTemplate> 
         </GridViewColumn> 

         <!--Pos--> 
         <GridViewColumn DisplayMemberBinding="{Binding Position}" x:Name="GridViewColumn_Pos" Width="50" Header="Pos"/> 
          <!--Entry--> 
         <GridViewColumn DisplayMemberBinding="{Binding Id}" x:Name="GridViewColumn_Entry" Width="200" Header="Eingabe"/> 
         <!--Sap--> 
         <GridViewColumn DisplayMemberBinding="{Binding SaperionNr}" x:Name="GridViewColumn_Sap" Width="100" Header="Saperion"/> 
         <!--Sup--> 
         <GridViewColumn DisplayMemberBinding="{Binding SupisNr}" x:Name="GridViewColumn_Sup" Width="100" Header="Navision"/> 
         <!--Path--> 
         <GridViewColumn DisplayMemberBinding="{Binding Path}" x:Name="GridViewColumn_Path" Width="150" Header="Pfad"/> 
         <!--Format--> 
         <GridViewColumn DisplayMemberBinding="{Binding Format}" x:Name="GridViewColumn_Format" Width="50" Header="Format"/> 
         <!--Page--> 
         <GridViewColumn DisplayMemberBinding="{Binding Page}" x:Name="GridViewColumn_Page" Width="40" Header="Blatt"/> 
         <!--Stat--> 
         <GridViewColumn DisplayMemberBinding="{Binding Status}" x:Name="GridViewColumn_Stat" Width="175" Header="Status"/> 
        </GridView> 
       </ListView.View> 
      </ListView> 

预先感谢您！

Answer 1

Listviews默认应该虚拟化。 然而，有一些情况使其效果无效。 我会设置一个maxheight并确保设置了ScrollViewer.VerticalScrollBarVisibility =“Visible”。