C#MD5加密方法

添加引用：using System.Security.Cryptography; public static string GetMd5(String s)        {            MD5 md5 = new MD5CryptoServiceProvider();            byte[] bytes = System.Text.Encoding.UTF8.GetBytes(s);            bytes = md5.ComputeHash(bytes);            md5.Clear();            string ret = "";            for (int i = 0; i < bytes.Length; i++)            {                ret += Convert.ToString(bytes[i], 16).PadLeft(2, '0');            }            return ret.PadLeft(32, '0');        }