[System.STAThreadAttribute()]
[System.Diagnostics.DebuggerNonUserCodeAttribute()]
[System.CodeDom.Compiler.GeneratedCodeAttribute("PresentationBuildTasks", "4.0.0.0")]
public static void Main()
{
    WpfApp1.App app = new WpfApp1.App();
    app.InitializeComponent();
    app.Run();
}

// StartUp.cs
class StartUp : Application
{
    [STAThread]
    public static void Main(string[] args)
    {
        var startUp = new MyStartUp();
        startUp.Run(args);
    }
}

// 需要添加对Microsoft.VisualBasic的引用
class MyStartUp : WindowsFormsApplicationBase
{
    protected override bool OnStartup(StartupEventArgs eventArgs)
    {
        App app = new App();
        app.Run();
        return false;
    }
}

// App.xaml.cs 删除App.xaml中的StartupUri="MainWindow.xaml"
public partial class App : Application
{
    public App()
    {
        var win = new MainWindow();
        win.Show();
    }
}

<configuration>
    <runtime>
        <generatePublisherEvidence enabled="false"/>
    </runtime>
</configuration>