我有一个问题,在运行时在C#中加载DLL.
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 */}
异常说:
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,找到了这个捕获器以寻找更多信息(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
有什么好主意吗?
解决方法
在调试模式下构建代码时,会创建两个文件,一个是类库,另一个是“debug database”.pdb文件.如果在调试模式下运行代码,请在反射代码的bin中包含pdb文件. 另一件事是在命令提示符下使用fuslogvw查看Fusion日志.它可能会给出任何未处理的运行时故障/依赖性.