填充 WinUI-3 ListView 时出现不可捕获的异常 (0xc000027b)

Question

当我使用

ItemsSource

作为

List<ApplicationModel.Package>

对象填充 ListView（或 ItemsView）时，加载控件时有时会发生崩溃。

如果我有一个使用 Package.Logo 作为源的

Image

，崩溃的几率会增加很多。

当我触发控件时，我希望它显示所有已安装的应用程序、它们的图标等。它成功地做到了，直到我尝试滚动......这就是我遇到崩溃的时候。

使用此代码：

<ContentDialog
    x:Class="Program.AllAppsList"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="TITLE"
    Style="{ThemeResource DefaultContentDialogStyle}">
    <Grid>
        <ListView ItemsSource="{x:Bind Packages}">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <!-- High crash chance with this uncommented -->
                        <Image Width="64" Height="64" Margin="5">
                            <Image.Source>
                                <BitmapImage UriSource="{Binding Logo, TargetNullValue='ms-appx:///Assets/fallback.png', FallbackValue='ms-appx:///Assets/fallback.png'}"  />
                            </Image.Source>
                        </Image>
                        <StackPanel Orientation="Vertical" Margin="5">
                            <TextBlock Text="{Binding DisplayName, TargetNullValue='Unknown', FallbackValue='Unknown'}" FontWeight="Bold" />
                            <TextBlock Text="{Binding PublisherDisplayName, TargetNullValue='Unknown', FallbackValue='Unknown'}" />
                        </StackPanel>
                    </StackPanel>
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>
    </Grid>
</ContentDialog>

using Microsoft.UI.Xaml.Controls;
using System.Collections.Generic;
using System.Linq;
using System.Security.Principal;
using Windows.ApplicationModel;
using Windows.Management.Deployment;

namespace Program
{
    public sealed partial class AllAppsList : ContentDialog
    {
        public List<Package> Packages { get; set; } = new List<Package>();

        public AllAppsList()
        {
            Packages = GetAllInstalledPackages();
            this.DataContext = this;
            this.InitializeComponent();
        }

        public static List<Package> GetAllInstalledPackages()
        {
            var pm = new PackageManager();
            return pm.FindPackagesForUser(WindowsIdentity.GetCurrent().User?.Value).ToList();
        }

        private void ContentDialog_PrimaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
        {
        }

        private void ContentDialog_SecondaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
        {
        }
    }
}

Answer 1

尝试以下操作：

public AllAppsList()
{
    var packages = GetAllInstalledPackages();

    // Magic block of code. Not sure why it works.
    var list = new List<string>();
    foreach (var package in packages)
    {
        list.Add(package.DisplayName);
    }

    Packages = packages;
    this.DataContext = this;
    this.InitializeComponent();
}

另外，由于似乎某些软件包，特别是在 DevelopmentMode 中安装的软件包没有正确的安装位置，请先尝试过滤它们：

public static List<Package> GetAllInstalledPackages()
{
    var pm = new PackageManager();
    return pm.FindPackagesForUser(WindowsIdentity.GetCurrent().User?.Value)
                 .Where(package => package.IsDevelopmentMode is false)
                 .ToList();
}