System.Net.HttpWebRequest.IsWellKnownContentHeader C# (CSharp) Method

        private bool IsWellKnownContentHeader(string header)
        {
            foreach (string contentHeaderName in s_wellKnownContentHeaders)
            {
                if (string.Equals(header, contentHeaderName, StringComparison.OrdinalIgnoreCase))
                {
                    return true;
                }
            }

            return false;
        }