Remote Shutdown or Reboot with Telnet and C#

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

class makeconfig
{
    static void Main(String[] args)
    {

        System.Text.StringBuilder sb = new System.Text.StringBuilder();
        sb.Append("<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<configuration>\n   <appSettings>\n        <add key=\"PasswordMD5\" value=\"");
        sb.Append(hash(getinput("Enter Password")));
        sb.Append("\" />\n      <add key=\"Port\" value=\"");
        sb.Append(getinput("Enter Port"));
        sb.Append("\" />\n	</appSettings>\n</configuration>");
        System.Console.WriteLine();
        System.Console.WriteLine(sb.ToString());

        System.Console.WriteLine("This output is also contained in the file RemoteShutdown.exe.config.New remove the .New after putting it in the appropriate bin directory.\n");
        System.IO.StreamWriter sw=new System.IO.StreamWriter("RemoteShutdown.exe.config.new");
        sw.Write(sb.ToString());
        sw.Close();
    }

    private static string getinput(string text)
    {
        System.Console.WriteLine(text);
        return System.Console.ReadLine();
    }

    private static string hash(string text)
    {
        string strHash = "";
        byte[] data, enc;

        data = Encoding.Default.GetBytes(text);
        SHA1 sha1 = new SHA1Managed();
        enc = sha1.TransformFinalBlock(data, 0, data.Length);
        foreach (byte b in sha1.Hash)
            strHash += Convert.ToString(b, 16).ToUpper().PadLeft(2, '0');
        sha1.Clear();
        return strHash;
    }
}