调用 Assembly.GetExportedTypes() 时抛出 FileNotFoundException

Question

在精简的 XP SP3 x86 虚拟机上运行 .net 2.0 应用程序时，即使在安装应用程序之前已经安装了 .net 2.0 框架运行时，我也会收到此错误。

Exception Source:      mscorlib
Exception Type:        System.IO.FileNotFoundException
Exception Message:     Could not load file or assembly 'WindowsBase, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.
Exception Target Site: GetExportedTypes

---- Stack Trace ----
   System.Reflection.Assembly.GetExportedTypes()
       XSplit.Core.exe: N 00000
   XSplit.Core.Capture.ChannelAddinManager.#Dm( As String)
       XSplit.Core.exe: N 00105
   XSplit.Core.Capture.ChannelAddinManager.#Cm()
       XSplit.Core.exe: N 00265
   XSplit.Core.Capture.ChannelAddinManager.Init(path As String, host As IAddinHost)
       XSplit.Core.exe: N 00104
   XSplit.Core.frmLogin.InitializeAddinComponent()
       XSplit.Core.exe: N 00534
   XSplit.Core.frmLogin..ctor(args As String[])
       XSplit.Core.exe: N 01263

产生此错误的相关代码是这样

var assembly = Assembly.LoadFrom(dllFile);
var assemblyTypes = assembly.GetExportedTypes();

即使安装framework 2.0 sp2后，仍然会抛出此错误。

你们知道这是为什么吗？

Answer 1

WindowsBase 程序集直到 .NET 3.0 才可用。如果你想运行这段代码而不出现异常，那么你需要在机器上安装 3.0，2.0 还不够好。检查外接程序项目的生成设置并确保它不引用任何 WPF 程序集。