Determine if there is a current HTTP context without referencing System.Web

HasHttpContext.cs

public static bool HasHttpContext
{
    get
    {
        try
        {
            var assembly = Assembly.Load("System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a");
            Type httpContextType = assembly.GetType("System.Web.HttpContext");
            PropertyInfo currentProperty = httpContextType.GetProperty("Current");
            object value = currentProperty.GetValue(null, null);
            bool hasHttpContext = value != null;
            return hasHttpContext;
        }
        catch (NullReferenceException)
        {
            return false;
        }                
    }
}