net40-client 
namespace Microsoft.AspNet.Membership.OpenAuth
{
    public class OpenAuthManager
    {
        public virtual void RequestAuthentication(HttpContextBase context, string providerName, string returnUrl);
    }
}
.NET Framework
4.04.54.5.14.5.24.64.6.14.6.24.74.7.14.7.24.84.8.1
Information specific to net40-client
Assembly

Microsoft.AspNet.Membership.OpenAuth , Version=1.0.0.0, PublicKeyToken=31bf3856ad364e35

Referencing

Your project needs a package reference to Microsoft.AspNet.Membership.OpenAuth.

Package Microsoft.AspNet.Membership.OpenAuth (2.0.1) net40
Platform Restrictions

This framework does not have platform annotations.

  • Built-in API
  • Package-provided API