C# hex dumper

HexDumper.cs

using System.Text;

namespace Whatever
{
    public static class HexDumper
    {
        public static string HexDump(byte[] data)
        {
            var sb = new StringBuilder();

            for (int i = 0; i < data.Length; i += 16)
            {
                sb.AppendFormat("{0:X8}:", i);

                for (int j = i; j < i + 16; ++j)
                {
                    if (j%2 == 0)
                        sb.Append(" ");

                    if (j < data.Length)
                        sb.AppendFormat("{0:X2}", data[j]);
                    else
                        sb.Append("  ");
                }

                sb.Append("  ");

                for (int j = i; j < i + 16; ++j)
                {
                    if (j < data.Length)
                    {
                        char c = (char)data[j];
                        if (c >= ' ' && c <= '~')
                            sb.Append(c);
                        else
                            sb.Append(".");
                    }
                    else
                        sb.Append(" ");
                }

                sb.AppendLine();
            }

            return sb.ToString();
        }
    }
}