protected void Page_Load(object sender, EventArgs e)
    {
        string a = "123456789";

        byte[] hashedDataBytes;

        UTF8Encoding encoder = new UTF8Encoding();
        MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();

        hashedDataBytes = md5Hasher.ComputeHash(encoder.GetBytes(a));

        string b = "";

        for (int i = 0; i <= 15; ++i)
        {
            b += hashedDataBytes[i];
        }

        Label1.Text = b.ToString();
    }