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c# - Microsoft.StreamProcessing 导致程序加载异常

问题描述

我有一个有点复杂的交易应用程序，它处理大量的事件消息。这是一个自动Windows MEF加载的应用程序。assembliesruntime

我决定尝试 Microsoft.StreamProcessing将事件转换为IStreamable. 我迈着缓慢的步伐。首先，我只是将程序集添加nuget到我的project. 然后添加

using Microsoft.StreamProcessing;

到代码中，但没有声明任何类型。运行良好。

接下来，我在代码中添加了一行：

IStreamable<Empty, IQuote> markeDatatStream;

这就是我所做的。我没有以任何方式使用它，只是添加了一行。这一次，当程序加载时，我得到了以下异常。当我查看推荐LoaderExceptions字段时，我得到：

{"Could not load file or assembly 'System.Runtime.Loader, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.":"System.Runtime.Loader, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"}

如果我从代码中删除单行

IStreamable<Empty, IQuote> markeDatatStream;

它工作正常。

完整的例外：

System.Reflection.ReflectionTypeLoadException
  HResult=0x80131602
  Message=Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
  Source=mscorlib
  StackTrace:
   at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
   at System.Reflection.Assembly.GetTypes()
   at System.ComponentModel.Composition.Hosting.AssemblyCatalog.get_InnerCatalog()
   at System.ComponentModel.Composition.Hosting.AssemblyCatalog.GetExports(ImportDefinition definition)
   at System.Linq.Enumerable.<SelectManyIterator>d__17`2.MoveNext()
   at System.ComponentModel.Composition.Hosting.CatalogExportProvider.InternalGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition)
   at System.ComponentModel.Composition.Hosting.ExportProvider.TryGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition, IEnumerable`1& exports)
   at System.ComponentModel.Composition.Hosting.ExportProvider.TryGetExports(ImportDefinition definition, AtomicComposition atomicComposition, IEnumerable`1& exports)
   at System.ComponentModel.Composition.Hosting.CatalogExportProvider.GetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition)
   at System.ComponentModel.Composition.Hosting.ExportProvider.TryGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition, IEnumerable`1& exports)
   at System.ComponentModel.Composition.Hosting.ExportProvider.GetExports(ImportDefinition definition, AtomicComposition atomicComposition)
   at System.ComponentModel.Composition.Hosting.AggregateExportProvider.GetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition)
   at System.ComponentModel.Composition.Hosting.ExportProvider.TryGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition, IEnumerable`1& exports)
   at System.ComponentModel.Composition.Hosting.CompositionContainer.GetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition)
   at System.ComponentModel.Composition.Hosting.ExportProvider.TryGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition, IEnumerable`1& exports)
   at System.ComponentModel.Composition.Hosting.ExportProvider.GetExports(ImportDefinition definition, AtomicComposition atomicComposition)
   at System.ComponentModel.Composition.Hosting.ImportEngine.TryGetExports(ExportProvider provider, ComposablePart part, ImportDefinition definition, AtomicComposition atomicComposition)
   at System.ComponentModel.Composition.Hosting.ImportEngine.TrySatisfyImportSubset(PartManager partManager, IEnumerable`1 imports, AtomicComposition atomicComposition)
   at System.ComponentModel.Composition.Hosting.ImportEngine.TrySatisfyImportsStateMachine(PartManager partManager, ComposablePart part)
   at System.ComponentModel.Composition.Hosting.ImportEngine.TrySatisfyImports(PartManager partManager, ComposablePart part, Boolean shouldTrackImports)
   at System.ComponentModel.Composition.Hosting.ImportEngine.SatisfyImports(ComposablePart part)
   at System.ComponentModel.Composition.Hosting.CompositionServices.TryInvoke(Action action)
   at System.ComponentModel.Composition.Hosting.ComposablePartExportProvider.Compose(CompositionBatch batch)
   at Trader.MainForm.InitializeTradingEngine() in C:\Users\idf\Projects\Trader-Orig-Working\Trader\Trader\MainForm.cs:line 200
   at Trader.MainForm..ctor(String logFilePath) in C:\Users\idf\Projects\Trader-Orig-Working\Trader\Trader\MainForm.cs:line 113
   at Trader.Program.Main() in C:\Users\idf\Projects\Trader-Orig-Working\Trader\Trader\Program.cs:line 231

标签： c#.netwinformsmef

解决方案

这里的问题可能是强命名。

总之：

如果您包含库 A，它是强命名的，并使用带有程序集版本 1.0.0.0 的库 B，并且您使用的是库 B，但使用的是程序集版本 1.1.0.0，那么您将收到加载错误 - 带有令人困惑的错误“该系统找不到指定的文件”

然后你需要一个绑定：

<dependentAssembly>
  <assemblyIdentity name="B"     publicKeyToken="32ab4ba45e0a69a1"     culture="en-us" />
  <bindingRedirect oldVersion="1.0.0.0" newVersion="1.1.0.0" />
</dependentAssembly>

因此，有人在您的应用程序中构建了 System.Runtime.Loader，Version=4.0.0.0，但您可能（可能通过另一个库）提供了另一个版本的 System.Runtime.Loader。

另一种选择是将 System.Runtime.Loader 版本添加到 GAC

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