ASP NET Identity - HttpContext has no extension method for GetOwinContext

Question

I have downloaded  and successfully ran the ASP NET Identity sample from here  https   github com rustd AspnetIdentitySample  I am now in the middle of implementing the ASP NET Identity framework in my project and have ran into a problem  that has driven me mad all day        GetOwinContext   does not exist as an extension method on my HttpContext   I am implementing the identity framework in class library  I have installed all the latest  pre-release version  of the Identity framework and everything - apart from this - is working fine   I have tried implementing the same code as the same direct in my controller  and find the same problem   I m clearly missing a reference somewhere  though I have no idea what       The code-block that is killing me is   private IAuthenticationManager AuthenticationManager       get               return HttpContext GetOwinContext   Authentication            I have added references to the following - tried these both in my class library and also direct on the controller  none of them work for me     using Microsoft AspNet Identity  using Microsoft AspNet Identity EntityFramework  using Microsoft Owin Security  using Microsoft Owin  using System Web        this is driving me up the wall    any idea   UPDATE  I have checked the versions of Identity  amp  OWIN in the sample  and I have made sure I have the same versions in my solution   More so  if I search the object browser on the sample for GetOwinContext I can find the method  however when I search for it in my solution it is nowhere to be found    I must have some library out of date  but I can t find it

User · Answer

Just install this package and your code will work    Install-Package Microsoft Owin Host SystemWeb -Version 2 1 0

User · Answer

Make sure you installed the nuget package Microsoft AspNet Identity Owin  Then add System Net Http namespace

User · Answer

ARGH    I found it    I didn t have an extra package  called Microsoft Owin Host SystemWeb  Once i searched and installed this  it worked   Now - i am not sure if i just missed everything  though found NO reference to such a library or package when going through various tutorials  It also didn t get installed when i installed all this Identity framework    Not sure if it were just me    EDIT Although it s in the Microsoft Owin Host SystemWeb assembly it is an extension method in the System Web namespace  so you need to have the reference to the former  and be using the latter

User · Answer

In my case adding Microsoft AspNet WebApi Owin reference via nuget did the trick

User · Answer

I believe you need to reference the current HttpContext if you are outside of the controller   The MVC controllers have a base reference to the current context   However  outside of that  you have to explicitly declare you want the current HttpContext  return HttpContext Current GetOwinContext   Authentication    As for it not showing up  a new MVC 5 project template using the code you show above  the IAuthenticationManager  has the following using statements at the top of the account controller   using System Threading Tasks  using System Web  using System Web Mvc  using Microsoft AspNet Identity  using Microsoft AspNet Identity EntityFramework  using Microsoft Owin Security  using WebApplication2 Models    Commenting out each one  it appears the GetOwinContext   is actually a part of the System Web Mvc assembly

User · Answer

I had all the correct packages and usings  but had to built first before I could get GetOwinContext   to work

User · Answer

Just using      HttpContext Current GetOwinContext     did the trick in my case

User · Answer

After trial and error comparing the using statements of my controller and the Asp Net Template controller  using System Web    Solved the problem for me  You are also going to need to add   using Microsoft AspNet Identity  using Microsoft AspNet Identity Owin    To use GetUserManager method   Microsoft couldn t find a way to resolve this automatically with right click and resolve like other missing using statements

User · Answer

To get UserManager in API  return HttpContext Current GetOwinContext   GetUserManager lt AppUserManager gt       where AppUserManager is the class that inherits from UserManager

User · Answer

For Devs getting this error in Web API Project -  The GetOwinContext extension method is defined in System Web Http Owin dll and one more package will be needed i e  Microsoft Owin Host SystemWeb  This package needs to be installed in your project from nuget    Link To Package  OWIN Package Install Command -  Install-Package Microsoft AspNet WebApi Owin       Link To System web Package   Package Install Command -   Install-Package Microsoft Owin Host SystemWeb   In order to resolve this error you need to find why its occurring in your case  Please Cross check below points in your code -    You must have reference to Microsoft AspNet Identity Owin   using Microsoft AspNet Identity Owin   Define GetOwinContext   Under HttpContext Current as below -    return  userManager1    HttpContext Current GetOwinContext   GetUserManager lt ApplicationUserManager gt       OR  return  signInManager    HttpContext Current GetOwinContext   Get lt ApplicationSignInManager gt        Complete Code Where GetOwinContext   is used -    public ApplicationSignInManager SignInManager       get          return  signInManager    HttpContext Current GetOwinContext   Get lt ApplicationSignInManager gt              private set             signInManager   value              Namespace s I m Using in Code File where GetOwinContext   Is used  using AngularJSAuthentication API Entities  using AngularJSAuthentication API Models  using HomeCinema Common  using Microsoft AspNet Identity  using Microsoft AspNet Identity EntityFramework  using System  using System Collections Generic  using System Linq  using System Threading Tasks  using System Web  using Microsoft AspNet Identity Owin  using Microsoft Owin Security DataProtection    I got this error while moving my code from my one project to another

[c#] ASP.NET Identity - HttpContext has no extension method for GetOwinContext

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