如何在新的 AppDomain 中运行 WPF 应用程序？执行程序集失败

Question

我正在尝试使用应用程序域从控制台应用程序启动 WPF 应用程序， 但当我这样做时，我会收到意想不到的错误。

独立运行 WPF 应用程序是可行的。

此代码也有效：

var baseDirectory = AppDomain.CurrentDomain.BaseDirectory;
var path = string.Format("{0}AddressbookDesktop.exe", baseDirectory);
var processInfo = new ProcessStartInfo(path, "");
Process.Start(processInfo);    

但此代码失败并出现以下错误。错误似乎出现在构造函数中，它是空的：

var addressbookDomain = AppDomain.CreateDomain("addressbookDomain");
addressbookDomain.ExecuteAssembly("AddressbookDesktop.exe");

堆栈跟踪：

System.Windows.Markup.XamlParseException: Cannot create instance of 
'AddressbookMainWindow' defined in assembly 'AddressbookDesktop, Version=1.0.0.0, 
Culture=neutral, PublicKeyToken=null'. Exception has been thrown
by the target of an invocation. Error in markup file 'AddressbookMainWindow.xaml' Line     1 Position 9.
---> System.Reflection.TargetInvocationException: Exception has been thrown by the
target of an invocation. ---> System.InvalidOperationException: The calling thread must 
be STA, because many UI components require this.

at System.Windows.Input.InputManager..ctor()
at System.Windows.Input.InputManager.GetCurrentInputManagerImpl()
at System.Windows.Input.InputManager.get_Current()
at System.Windows.Input.KeyboardNavigation..ctor()
at System.Windows.FrameworkElement.FrameworkServices..ctor()
at System.Windows.FrameworkElement.EnsureFrameworkServices()
at System.Windows.FrameworkElement..ctor()
at System.Windows.Controls.Control..ctor()
at System.Windows.Controls.ContentControl..ctor()
at System.Windows.Window..ctor()
at XX.YY.AddressbookDesktop.AddressbookMainWindow..ctor() in      C:\.....\AddressBookDesktop\AddressbookMainWindow.xaml.cs:line 15
--- End of inner exception stack trace ---

我想我做错了什么，但无法理解它是什么。 感谢您的任何帮助。

Answer 1

问题是 WPF 必须从 STA 线程运行（上面的内部异常之一说明了这一点）。我通过将 STAThreadAttribute 添加到我的 Main() 方法：

using System;

class Program
{
    [STAThread]
    static void Main(string[] args)
    {
        Console.WriteLine("Starting WpfApplication1.exe...");

        var domain = AppDomain.CreateDomain("WpfApplication1Domain");
        try
        {
            domain.ExecuteAssembly("WpfApplication1.exe");
        }
        catch(Exception ex)
        {
            Console.WriteLine(ex.ToString());
        }
        finally
        {
            AppDomain.Unload(domain);
        }

        Console.WriteLine("WpfApplication1.exe exited, exiting now.");
    }
}