asp.net - Error when upgrading to WebAPI 2.1 XmlDocumentationProvider does not implement interface member GetDocumentation -


i'm following tutorial here:

http://www.asp.net/web-api/overview/releases/whats-new-in-aspnet-web-api-21#download

i created mvc web api project in visual studio 2012 (.net framework 4.5), , ran command in nuget package manager console install-package microsoft.aspnet.webapi

when tried build project, error:

'commonservices.areas.helppage.xmldocumentationprovider' not implement interface member      'system.web.http.description.idocumentationprovider.getdocumentation(system.web.http.controllers.httpcontrollerdescriptor)' c:\users\administrator\documents\visual studio 2012\projects\commonservices\commonservices\areas\helppage\xmldocumentationprovider.cs  'commonservices.areas.helppage.xmldocumentationprovider' not implement interface member      'system.web.http.description.idocumentationprovider.getresponsedocumentation(system.web.http.controllers.httpactiondescriptor)' c:\users\administrator\documents\visual studio 2012\projects\commonservices\commonservices\areas\helppage\xmldocumentationprovider.cs 

is there missed?

i got same problem when getting microsoft.aspnet.webapi.

at nuget package manager console write this:

update-package -projectname 'yourprojectnamegoeshere' -reinstall 

this update packages , solve problem.i hope helps


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