Grant access to gated content Sitecore webforms for marketers

GrantGatedAccess.cs

public class GrantGatedAccess : WffmSaveAction
{
    public override void Execute(ID formId, AdaptedResultList adaptedFields, ActionCallContext actionCallContext = null,
        params object[] data)
    {
        HttpCookie cookie = new HttpCookie(Constants.GatedAccessCookeName)
        {
            Value = Constants.AccessGrantedCookieValue,
            Expires = DateTime.Now.AddDays(Utility.GetCookieLifeSpan())
        };

        HttpContext.Current.Response.Cookies.Add(cookie);
    }
    
    private Utility _utility;
    public Utility Utility
    {
        get
        {
            if (_utility == null)
            {
                _utility = new Utility();
            }
            return _utility;
        }
        set { _utility = value; }
    }
}