如何在 Visual Studio 2022 中正確創建 C# WinUI 項目？

Question

我一直在嘗試創建一個新的 WinUI 項目。 我按照MS Docs 頁面准備了開發環境，並使用Blank App, Packaged (WinUI 3 in Desktop)模板創建了新項目。 以下代碼運行沒有任何異常。

<Window
    x:Class="App1.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App1"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
        <Button x:Name="myButton">Click Me</Button>
    </StackPanel>
</Window>

然而，在添加一個新的BlankWindow1 window 並使用此代碼打開它后，應用程序會因kernelbase.pdb not loaded錯誤而中斷。 我懷疑我在創建項目/設置開發環境時遺漏了一些東西，因為前段時間我一直在使用相同的代碼而沒有問題。 但是，在做了幾次之后，我仍然看不到我這邊有任何錯誤。

MainWindow.xaml

<Window
    x:Class="App1.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App1"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
        <Button x:Name="myButton" Click="myButton_Click">Click Me</Button>
    </StackPanel>
</Window>

MainWindow.xaml.cs

using Microsoft.UI.Xaml;
namespace App1
{

    public sealed partial class MainWindow : Window
    {
        public MainWindow()
        {
            this.InitializeComponent();
        }

        private void myButton_Click(object sender, RoutedEventArgs e)
        {
            BlankWindow1 window1 = new BlankWindow1();
            window1.Activate();
        }
    }
}

App1.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>net6.0-windows10.0.19041.0</TargetFramework>
    <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
    <RootNamespace>App1</RootNamespace>
    <ApplicationManifest>app.manifest</ApplicationManifest>
    <Platforms>x86;x64;arm64</Platforms>
    <RuntimeIdentifiers>win10-x86;win10-x64;win10-arm64</RuntimeIdentifiers>
    <PublishProfile>win10-$(Platform).pubxml</PublishProfile>
    <UseWinUI>true</UseWinUI>
    <EnablePreviewMsixTooling>true</EnablePreviewMsixTooling>
  </PropertyGroup>
  <ItemGroup>
    <None Remove="BlankWindow1.xaml" />
  </ItemGroup>

  <ItemGroup>
    <Content Include="Assets\SplashScreen.scale-200.png" />
    <Content Include="Assets\LockScreenLogo.scale-200.png" />
    <Content Include="Assets\Square150x150Logo.scale-200.png" />
    <Content Include="Assets\Square44x44Logo.scale-200.png" />
    <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
    <Content Include="Assets\StoreLogo.png" />
    <Content Include="Assets\Wide310x150Logo.scale-200.png" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.0.0" />
    <PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.22000.194" />
    <Manifest Include="$(ApplicationManifest)" />
  </ItemGroup>

  <!-- Defining the "Msix" ProjectCapability here allows the Single-project MSIX Packaging
       Tools extension to be activated for this project even if the Windows App SDK Nuget
       package has not yet been restored -->
  <ItemGroup Condition="'$(DisableMsixProjectCapabilityAddedByProject)'!='true' and '$(EnablePreviewMsixTooling)'=='true'">
    <ProjectCapability Include="Msix" />
  </ItemGroup>
  <ItemGroup>
    <Page Update="BlankWindow1.xaml">
      <Generator>MSBuild:Compile</Generator>
    </Page>
  </ItemGroup>
</Project>

Answer 1

看來您目前無法在 WinUi3 中創建多個 window，請參見此處和此處。 有人提到，在 Windows 應用程序 SDK 的預覽版中是可能的。