System.Net.HttpWebResponse.GetHeaderValueAsString C# (CSharp) Method

        private string GetHeaderValueAsString(IEnumerable<string> values)
        {
            // There is always at least one value even if it is an empty string.
            var enumerator = values.GetEnumerator();
            bool success = enumerator.MoveNext();
            Debug.Assert(success, "There should be at least one value");

            string headerValue = enumerator.Current;

            if (enumerator.MoveNext())
            {
                // Multi-valued header
                var buffer = new StringBuilder(headerValue);

                do
                {
                    buffer.Append(", ");
                    buffer.Append(enumerator.Current);
                } while (enumerator.MoveNext());

                return buffer.ToString();
            }

            return headerValue;
        }
    }