using System.Security.Cryptography;

   public string Encript(string password)
        {
            System.Security.Cryptography.MD5CryptoServiceProvider objCript = 
                new System.Security.Cryptography.MD5CryptoServiceProvider();
            byte[] bs = System.Text.Encoding.UTF8.GetBytes(password);
            bs = objCript.ComputeHash(bs);
            System.Text.StringBuilder s = new System.Text.StringBuilder();

            foreach (byte b in bs)
            {
                s.Append(b.ToString("x2").ToLower());
            }
            password = s.ToString();
            return password;
        }