using System.Runtime.InteropServices;
namespace WinFormsApp1
{
public partial class Form1 : Form
{
[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
static extern bool GetDiskFreeSpaceEx(string lpDirectoryName,
out ulong lpFreeBytesAvailable,
out ulong lpTotalNumberOfBytes,
out ulong lpTotalNumberOfFreeBytes);
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
ulong freeBytesAvailable;
ulong totalNumOfBytes;
ulong totalNumOfFreeBytes;
if (!GetDiskFreeSpaceEx("C:\\", out freeBytesAvailable, out totalNumOfBytes, out totalNumOfFreeBytes))
{
Console.Error.WriteLine("GetDiskFreeSpaceEx Error");
}
else
{
label1.Text = "";
label1.Text += "Available: " + string.Format("{0:n}", freeBytesAvailable / 1024) + " k" + Environment.NewLine;
label1.Text += "Total: " + string.Format("{0:n}", totalNumOfBytes / 1024) + " k" + Environment.NewLine;
label1.Text += "Total free: " + string.Format("{0:n}", totalNumOfFreeBytes / 1024) + " k" + Environment.NewLine;
}
}
}
}
/*
* run:
*
* Available: 528,781,604.00 k
* Total: 976,132,092.00 k
* Total free: 528,781,604.00 k
*
*/
