[C#] GBK转UTF-8 编码

  private string Gbk2Utf8(string input)
        {
            if (string.IsNullOrEmpty(input))
            {
                return "";
            }
            Encoding encoding = System.Text.Encoding.GetEncoding("GB2312");
            byte[] bytes = encoding.GetBytes(input);
            encoding = System.Text.Encoding.UTF8;
            string newOldHtml = encoding.GetString(bytes);
            return newOldHtml;
        }