我在运行时在DLL中加载C#时遇到问题。

以下代码:

foreach (var f in Directory.EnumerateFiles(startFolder, "*.dll",            SearchOption.AllDirectories))
{
   try
   {
       var assembly = Assembly.LoadFrom(f);
       var types = assembly.GetTypes(); //exception raised here

       foreach (var type in types)
       {
            if (type.GetInterface("IPlayerFactory") != null)
                 instances.Add((IPlayerFactory)Activator.CreateInstance(type));
       }
       assembly = null;
    }
    catch (ReflectionTypeLoadException ex) { /* later, keep reading  */}

所以异常(exception)说:
An exception of type 'System.Reflection.ReflectionTypeLoadException' occurred in
mscorlib.dll but was not handled in user code

Additional information: Unable to load one or more of the requested types. Retrieve the
LoaderExceptions property for more information.

我搜索了一下堆栈,发现此catch可以查找更多信息(来源:here)

捕获块:
catch (ReflectionTypeLoadException ex)
{
     StringBuilder sb = new StringBuilder();
     foreach (Exception exSub in ex.LoaderExceptions)
     {
          sb.AppendLine(exSub.Message);
          FileNotFoundException exFileNotFound = exSub as FileNotFoundException;
          if (exFileNotFound != null)
          {
              if (!string.IsNullOrEmpty(exFileNotFound.FusionLog))
              {
                  sb.AppendLine("Fusion Log:");
                  sb.AppendLine(exFileNotFound.FusionLog);
              }
          }
                    sb.AppendLine();
      }
      string errorMessage = sb.ToString();
      //Display or log the error based on your application.
      Console.WriteLine(sb);
 }

所以我设法提取:
'Battleships.Desktop.vshost.exe' (CLR v4.0.30319: Battleships.Desktop.vshost.exe):
 Loaded 'C:\SomePath\some_dll.dll'. Cannot find
 or open the PDB file.
 A first chance exception of type 'System.Reflection.ReflectionTypeLoadException'
 occurred in mscorlib.dll

我尝试了一些解决方案,但没有任何效果。
有什么新主意吗?

最佳答案

在 Debug模式下构建代码时,将创建两个文件,一个是类库,另一个是“调试数据库” .pdb文件。如果在 Debug模式下运行代码,则在反射代码的bin中也应包含pdb文件。
另一件事是在命令提示符下使用fuslogvw查看Fusion日志。它可能会给出任何 Unresolved 运行时故障/依赖关系。

关于加载DLL时发生C#异常。找不到解决方案,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/23463711/

10-10 18:26
查看更多