net481 
namespace Microsoft.Web.Helpers
{
    public class Twitter : HelperPage
    {
        public static HelperResult FollowButton(string userName, string followStyle = "follow_me", string followColor = "a");
    }
}
.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 net481
Assembly

Microsoft.Web.Helpers , Version=2.0.0.0, PublicKeyToken=31bf3856ad364e35

Referencing

Your project needs a package reference to Microsoft.AspNet.Web.Helpers.Mvc.

Package Microsoft.AspNet.Web.Helpers.Mvc (2.0.20710) net40
Platform Restrictions

This framework does not have platform annotations.

  • Built-in API
  • Package-provided API