using System.Security.Cryptography;

/// <summary>

        /// 返回大写形式的MD5加密

        /// </summary>

        /// <param name="input"></param>

        /// <returns></returns>

        public string Md5Upper(string input)

        {

            MD5 md5Hasher = MD5.Create();

            byte[] data = md5Hasher.ComputeHash(Encoding.UTF8.GetBytes(input));

            StringBuilder sBuilder = new StringBuilder();

            for (int i = ; i < data.Length; i++)

            {

                sBuilder.Append(data[i].ToString("x2"));

            }

            return sBuilder.ToString().ToUpper();

        }