Space Checker

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using System.Net.Mail;

namespace Storage_Space_Checker
{
    class Program
    {
        static void Main(string[] args)
        {

            string drive = @"C:\";
            float alertIfLower = 1.0f;

            bool hasAlerted = false;

            if (args.Length == 2)
            {
                drive = args[0];
                alertIfLower = float.Parse(args[1]);
            }

            while (true)
            {
                foreach (DriveInfo d in DriveInfo.GetDrives())
                {
                    if (d.Name == drive)
                    {
                        float freeSpace = d.TotalFreeSpace / 1024f / 1024f / 1024f;
                        Console.WriteLine(freeSpace.ToString("####.00"));

                        if (freeSpace < alertIfLower)
                        {
                            if (!hasAlerted)
                            {
                                MailMessage mail = new MailMessage("[email protected]", "[email protected]");
                                SmtpClient client = new SmtpClient();
                                client.Port = 25;
                                client.DeliveryMethod = SmtpDeliveryMethod.Network;
                                client.UseDefaultCredentials = false;
                                client.Host = "192.168.1.5";
                                mail.Subject = "Disk Space Full!";
                                mail.Body = "Disk space on drive " + drive + " in computer " + Environment.MachineName + " is full.";
                                client.Send(mail);
                                hasAlerted = true;
                            }
                        }
                        else
                        {
                            hasAlerted = false;
                        }
                    }
                }

                Thread.Sleep(5000);
            }
        }
    }
}