WPF ListView的大数据非常差的性能 [英] WPF ListView very poor performance with large data

问题描述

我遇到了在WPF一个ListView，使用30000左右表现的记录非常差。据我所知，虚拟化应打开，因为这是默认的（我甚至在XAML打开它明确）。

I am experiencing very poor performance with a ListView in WPF, using around 30000 records. As far as I know Virtualisation should be turned on as this is the default (I even turned it on explicitly in the XAML).

表现不佳以这种方式体现：

The poor performance manifests in this way:

• 很慢（一两分钟）做初始绑定


• 很慢（超过一分钟）滚动


• 很慢（再次，超过一分钟），当你选择行。

我希望有人能来看看在XAML，让我有一些想法。

I was hoping someone would take a look at the XAML and let me have some thoughts.

<ListView Name="grdComms" Grid.Row="0" Grid.Column="0" SelectedItem="{Binding SelectedHeader}"
          VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.VirtualizationMode="Recycling"
          ScrollViewer.IsDeferredScrollingEnabled="True">
       <ListView.View>
            <GridView >
                  <GridViewColumn Header="Account Name" DisplayMemberBinding="{Binding Path=AccountName}" Width="150" />
                  <GridViewColumn Header="Account Number" DisplayMemberBinding="{Binding Path=AccountNumber}" Width="120" />
                  <GridViewColumn Header="Type" DisplayMemberBinding="{Binding Path=Type}" Width="80" />
                  <GridViewColumn Header="Delivery" DisplayMemberBinding="{Binding Path=Delivery}" Width="80" />
                  <GridViewColumn Header="Count" DisplayMemberBinding="{Binding Path=RequestCount}" Width="80" />
                  <GridViewColumn Width="80" Header="DeDupe">
                       <GridViewColumn.CellTemplate>
                           <DataTemplate>
                               <StackPanel Width="80">
                                   <CheckBox HorizontalAlignment="Center" IsChecked="{Binding Path=SelectedForProcessing, Mode=TwoWay}"/>
                                </StackPanel>
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                  </GridViewColumn>
             </GridView>
      </ListView.View>
</ListView>

注：的ItemsSource设置在code，到一个ObservableCollection。这是pretty普通属性的集合（几个字符串，一个布尔值），这是一个视图模型到模型，这是（再次）字符串和布尔变量。

Note: the ItemsSource is set in code, to an ObservableCollection. This is a collection of pretty plain properties (couple of strings, a bool), which is a ViewModel onto the Model, which is (again) strings and bools.

我看那里的人都使用大的记录集，没有任何问题，但我似乎已经试过各种事情不工作。

I'm reading where people are using large record sets with no problems, but the various things I have tried don't seem to work.

任何请告诉我需要更多的信息。

Any more information required please let me know.

推荐答案

请不理我了。只要我设置的ListView的东西大于它所需要的了maxHeight的问题完全消失。我发誓瞎我尝试这样做，显然不是。

Please ignore me. The problem entirely disappears as soon as I set the MaxHeight of the ListView to something bigger than it needs. I would swear blind I tried this, obviously not.

待着，没有什么可看这里......

Move along, there is nothing to see here ...

灰色

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