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我正在将 WebApi 添加到现有的 MVC3 应用程序中，在添加 NuGet Web Api 包并获取新的 Unity.dll 后，我遇到了以下问题：

显然，另一个程序集正在引用 Unity.dll（我相信它是 EnterpriseLibrary.Common，不是 100% 确定 - 我确实更新到了最新的 EntLib，但我仍然收到错误消息）。

我已将以下 assemblyBinding 添加到 web.config。但是程序集绑定不起作用，它仍在寻找旧的 Microsoft.Practices.Unity.dll。

<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
            <dependentAssembly>
                <assemblyIdentity name="Microsoft.Practices.Unity" PublicKeyToken="31bf3856ad364e35" Culture="neutral" />
                <bindingRedirect oldVersion="1.0.0.0-2.0.414.0" newVersion="2.1.505.0" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="Microsoft.Practices.Unity.Configuration" PublicKeyToken="31bf3856ad364e35" Culture="neutral" />
                <bindingRedirect oldVersion="1.0.0.0-2.0.414.0" newVersion="2.1.505.0" />
            </dependentAssembly>
        </assemblyBinding>
    </runtime>

这是我看到的错误的堆栈跟踪：

System.IO.FileLoadException
Could not load file or assembly 'Microsoft.Practices.Unity, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)</Message><StackTrace>
Server stack trace: 
   at System.Reflection.RuntimeAssembly.GetExportedTypes(RuntimeAssembly assembly, ObjectHandleOnStack retTypes)
   at System.Reflection.RuntimeAssembly.GetExportedTypes()
   at System.Web.Http.Dispatcher.DefaultHttpControllerTypeResolver.GetControllerTypes(IAssembliesResolver assembliesResolver)
   at System.Web.Http.WebHost.WebHostHttpControllerTypeResolver.GetControllerTypes(IAssembliesResolver assembliesResolver)
   at System.Web.Http.Dispatcher.HttpControllerTypeCache.InitializeCache()
   at System.Lazy`1.CreateValue()

Exception rethrown at [0]: 
   at System.Reflection.RuntimeAssembly.GetExportedTypes(RuntimeAssembly assembly, ObjectHandleOnStack retTypes)
   at System.Reflection.RuntimeAssembly.GetExportedTypes()
   at System.Web.Http.Dispatcher.DefaultHttpControllerTypeResolver.GetControllerTypes(IAssembliesResolver assembliesResolver)
   at System.Web.Http.WebHost.WebHostHttpControllerTypeResolver.GetControllerTypes(IAssembliesResolver assembliesResolver)
   at System.Web.Http.Dispatcher.HttpControllerTypeCache.InitializeCache()
   at System.Lazy`1.CreateValue()
   at System.Lazy`1.LazyInitValue()
   at System.Web.Http.Dispatcher.DefaultHttpControllerSelector.InitializeControllerInfoCache()
   at System.Lazy`1.CreateValue()

Exception rethrown at [1]: 
   at System.Reflection.RuntimeAssembly.GetExportedTypes(RuntimeAssembly assembly, ObjectHandleOnStack retTypes)
   at System.Reflection.RuntimeAssembly.GetExportedTypes()
   at System.Web.Http.Dispatcher.DefaultHttpControllerTypeResolver.GetControllerTypes(IAssembliesResolver assembliesResolver)
   at System.Web.Http.WebHost.WebHostHttpControllerTypeResolver.GetControllerTypes(IAssembliesResolver assembliesResolver)
   at System.Web.Http.Dispatcher.HttpControllerTypeCache.InitializeCache()
   at System.Lazy`1.CreateValue()
   at System.Lazy`1.LazyInitValue()
   at System.Web.Http.Dispatcher.DefaultHttpControllerSelector.InitializeControllerInfoCache()
   at System.Lazy`1.CreateValue()
   at System.Lazy`1.LazyInitValue()
   at System.Web.Http.Dispatcher.DefaultHttpControllerSelector.SelectController(HttpRequestMessage request)
   at System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsyncInternal(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Web.Http.Dispatcher.HttpControllerDispatcher.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)</StackTrace></Exception>
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