10000个图像绑定到ListView时发生C#WPF contextswitch死锁 [英] C# WPF contextswitchdeadlock occured while 10000 images bind to listview

问题描述

Everything working fine on 3000 to 4000 images when i am loading 10000 images in listview every error occured
ContextSwitchDeadlock occured

我正在使用此代码读取所有图像源

i am reading all image source using this code

<pre>  BitmapImage myBitmapImage = new BitmapImage();
                                        myBitmapImage.BeginInit();
                                        myBitmapImage.UriSource = new Uri(myImagesList[j].FilePath);
     myImagesList[j].getUri = myBitmapImage.UriSource;
     myBitmapImage.EndInit();
     this.Dispatcher.Invoke((Action)(() =>
        {
lstVisualDuplicateImage.Add(myImagesList[j]);
}));

将我的列表绑定到RunWorkCompleted中的listview

Bind my list to listview in RunWorkCompleted

private void FileLoadingWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
      {
          if(lvImages != null)
          {
              lvImages.ItemsSource = lstVisualDuplicateImage;
              //view = (CollectionView)CollectionViewSource.GetDefaultView(lvImages.ItemsSource);
              //PropertyGroupDescription groupDescription = new PropertyGroupDescription("GrpNumber");
              //view.GroupDescriptions.Add(groupDescription);
              //txtTotalDuplicates.Text = "Total Files" + "(" + lstVisualDuplicateImage.Count + ")";
              //txtTotalGroups.Text = "Total Groups" + "(" + GroupNo + ")";

              pop.HidePopUp();
          }
      }

和XAML文件的外观<

and XAML file looks <

<Image Height="120" Width="120">

                                         <Image.Source>
                                             <BitmapImage
                     DecodePixelHeight="120"
                     DecodePixelWidth="120"
                     UriSource="{Binding Path=getUri, Mode=OneWay,UpdateSourceTrigger=Explicit }"
                     CreateOptions="IgnoreColorProfile"

                     CacheOption="None"  />
                                         </Image.Source>
                                     </Image>

当我在listview中加载10000张图像时，一切正常，在3000到4000张图像上都可以正常工作
发生ContextSwitch死锁

我尝试过的事情:

我正在开发一个应用程序，我几乎已经完成了所有工作，对小数据没有问题，没有，每当发生错误时，我都会移至大文件，没有f文件.ContextSwitcherror

Everything working fine on 3000 to 4000 images when i am loading 10000 images in listview every error occured
ContextSwitchDeadlock occured

What I have tried:

I am working on a application i have done almost everything no problem on small data no i move to large no f files every time error occured ContextSwitcherror

推荐答案

ContextSwitchDeadlock是通常表明UI线程忙了太长时间.您是否由于误操作或故意禁用了VirtualStackPanel?

这是一个包含100,000个项目的测试，它几乎可以立即加载并运行.重要的是，VirtualStackPanel是活动的.

XAML

ContextSwitchDeadlock is usually an indication that the UI thread was busy for too long. Have you disabled the VirtualStackPanel by mistake or on purpose?

Here is a test with 100,000 items and it loads and runs almost instantly. Importantly, the VirtualStackPanel is active.

XAML

<Window

    x:Class="VirtualListView.MainWindow"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"



    mc:Ignorable="d"

    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"



    Title="Virtualized ListView" Height="300" Width="500">

    <Grid>
        <ListView ItemsSource="{Binding Persons}">
            <ListView.View>
                <GridView>
                    <GridViewColumn Header="Avatar" Width="100">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <Image Source="{Binding AvatarUrl}" Margin="10" />
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                    <GridViewColumn Header="Name" Width="200" DisplayMemberBinding="{Binding Name}" />
                    <GridViewColumn Header="Age" Width="50" DisplayMemberBinding="{Binding Age}" />
                </GridView>
            </ListView.View>
        </ListView>
    </Grid>

</Window>

隐藏代码

Code Behind

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        DataContext = this;
        Mock();
    }

    public ObservableCollection<Person> Persons { get; set; }
        = new ObservableCollection<Person>();

    private Random rand = new Random();

    private void Mock()
    {
        for (int i = 0; i < 100000; i++)
        {
            Persons.Add(new Person
            {
                AvatarUrl = "http://www.freepngimg.com/download/happy_person/2-2-happy-person-free-download-png.png",
                Name =

" ， Age = rand.Next( 20 ， 60 ) }); } } } 公共 类人 { 公共 字符串 AvatarUrl { get ; 设置； } 公共 字符串名称{ get ; 设置； } 公共 int 年龄{ get ; 设置； } }

"Person {i}", Age = rand.Next(20, 60) }); } } } public class Person { public string AvatarUrl { get; set; } public string Name { get; set; } public int Age { get; set; } }

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