升级到SignalR 2.0后出现TypeLoadException

Question

升级到SignalR 2.0后，我收到以下错误消息

[TypeLoadException: Could not load type 'Microsoft.AspNet.SignalR.Hosting.IWebSocketRequest' from assembly 'Microsoft.AspNet.SignalR.Core, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.]
   Microsoft.AspNet.SignalR.Owin.CallHandler.Invoke(IDictionary`2 environment) +0
   Microsoft.AspNet.SignalR.Owin.Handlers.HubDispatcherHandler.Invoke(IDictionary`2 environment) +369
   Microsoft.Owin.Host.SystemWeb.OwinCallContext.Execute() +333
   Microsoft.Owin.Host.SystemWeb.OwinHttpHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object extraData) +713
   System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() +32
   Microsoft.Owin.Host.SystemWeb.Infrastructure.ErrorState.Rethrow() +62
   Microsoft.Owin.Host.SystemWeb.CallContextAsyncResult.End(IAsyncResult result) +271
   Microsoft.Owin.Host.SystemWeb.OwinHttpHandler.EndProcessRequest(IAsyncResult result) +45
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +606
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +288

我在组件exdplorer中深入研究，实际上IWebSocketRequest已经不存在了。看起来我需要替换一些绑定处理程序，但我不知道从哪里开始。

Answer 1

请在此处了解更新至2.0 http://www.asp.net/signalr/overview/signalr-20/getting-started-with-signalr-20/upgrading-signalr-1x-projects-to-20的潜在问题。