using System;
using System.IO;
using System.Reflection;
using System.Runtime.ConstrainedExecution;
using System.Runtime.InteropServices;
using Microsoft.Win32.SafeHandles;
public class MainClass
{
[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
static extern bool GetDiskFreeSpaceEx(string lpDirectoryName,
out ulong lpFreeBytesAvailable,
out ulong lpTotalNumberOfBytes,
out ulong lpTotalNumberOfFreeBytes);
public static void Main()
{
ulong freeBytesAvail;
ulong totalNumOfBytes;
ulong totalNumOfFreeBytes;
if (!GetDiskFreeSpaceEx("C:\\", out freeBytesAvail, out totalNumOfBytes, out totalNumOfFreeBytes))
{
Console.Error.WriteLine("Error occurred: {0}",
Marshal.GetExceptionForHR(Marshal.GetLastWin32Error()).Message);
}
else
{
Console.WriteLine("Free disk space:");
Console.WriteLine(" Available bytes : {0}", freeBytesAvail);
Console.WriteLine(" Total # of bytes: {0}", totalNumOfBytes);
Console.WriteLine(" Total free bytes: {0}", totalNumOfFreeBytes);
}
}
}
Free disk space:
Available bytes : 33091416064
Total # of bytes: 60003381248
Total free bytes: 33091416064