Unable to register [ openauth] in authconfig class in MVC 5

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C#

ASP.NET

MVC

Hi ,

I have the following code in my authconfig class in asp.net mvc 5 empty project

public class AuthConfig
    {
        public static void RegisterAuth()
        {
            // To let users of this site log in using their accounts from other sites such as Microsoft, Facebook, and Twitter,
            // you must update this site. For more information visit http://go.microsoft.com/fwlink/?LinkID=252166

            OAuthWebSecurity.RegisterMicrosoftClient(
                clientId: "",
                clientSecret: "");

            OAuthWebSecurity.RegisterTwitterClient(
                consumerKey: "",
                consumerSecret: "");

            OAuthWebSecurity.RegisterFacebookClient(
                appId: "",
                appSecret: "");

            OAuthWebSecurity.RegisterGoogleClient();

            OAuthWebSecurity.RegisterLinkedInClient(
                consumerKey: "",
                consumerSecret: "");

            OAuthWebSecurity.RegisterYahooClient();
        }
    }

but im getting error in it as : The name 'OAuthWebSecurity' does not exist in the current context in authconfig

i have imported all the packages from nuget :

DotNetOpenAuth.AspNet
Microsoft.AspNet.Providers.Core
Microsoft.AspNet.Providers.LocalDb
Microsoft.AspNet.Membership.OpenAuth