MD5 Hashing In C#

using System;
using System.Security.Cryptography;
using System.Text;

MD5 md5 = MD5.Create();
byte[] data = md5.ComputeHash(Encoding.Default.GetBytes("neeraj"));
StringBuilder s_builder = new StringBuilder();
foreach (byte b in data)
{
s_builder.Append(b.ToString("x2"));
}

Response.Write(s_builder);