问题描述
我有一个Windows窗体应用程序，具有含WPF用户控件的单个ElementHost的......在我的WPF，我有一个非常简单的ListView：
I have a Windows Forms app, that has a single ElementHost containing a WPF UserControl... in my WPF, I have a VERY simple ListView:
<ListView Margin="4" ItemsSource="{Binding Notifications}">
<ListView.View>
<GridView>
<GridViewColumn Header="FirstName" DisplayMemberBinding="{Binding FirstName}" />
<GridViewColumn Header="LastName" DisplayMemberBinding="{Binding LastName}" />
<GridViewColumn Header="Address" DisplayMemberBinding="{Binding Address}" />
<GridViewColumn Header="City" DisplayMemberBinding="{Binding City}" />
<GridViewColumn Header="State" DisplayMemberBinding="{Binding State}" />
<GridViewColumn Header="Zip" DisplayMemberBinding="{Binding Zip}" />
</GridView>
</ListView.View>
</ListView>
如果我的源有10个项目，形式载荷不到一秒钟。如果我的源有1000个项目，它需要7秒！我的计时器只走的是加载到户口（不花费多少时间来获取项目）。
If my source has 10 items, the form loads in less than one second. If my source has 1000 items, it takes 7 seconds!!! My timer is ONLY taking the loading into account (not how much time it takes to get the items).
所以我的问题是：
时使用ElementHost的业绩噩梦？
Is using an ElementHost a performance nightmare?
时的WPF数据绑定性能的噩梦？
Is WPF DataBinding a performance nightmare?
时的ListView的一块垃圾？ （顺便说一句，与WPFToolkit的DataGrid中相同的结果）？
Is the ListView a piece of crap? (btw, same results with the WPFToolkit's DataGrid)?
推荐答案
使用虚拟化
<ListView ItemsSource="{BindingNames}"Name="lv">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<!--<StackPanel/>
If StackPanel was used, the memory consumed was over 2GB and dead slow.
-->
<VirtualizingStackPanel>
<!--Memory footprint is only 200 mb-->
</VirtualizingStackPanel>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding}"/>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
这篇关于WPF的ListView非常慢的性能 - 为何？ （ElementHost的，还是其他原因？）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！