Untitled

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Management;
using System.Runtime.InteropServices; //DllImport

namespace Account_Hacker_ID
{
    public partial class frmAccountHackerID : Form
    {
        public frmAccountHackerID()
        {
            InitializeComponent();
        }

        [DllImport("kernel32.dll")]
        private static extern long GetVolumeInformation(string PathName, StringBuilder VolumeNameBuffer, UInt32 VolumeNameSize, ref UInt32 VolumeSerialNumber, ref UInt32 MaximumComponentLength, ref UInt32 FileSystemFlags, StringBuilder FileSystemNameBuffer, UInt32 FileSystemNameSize);
        
        private void frmAccountHackerID_Load(object sender, EventArgs e)
        {
            string strDriveLetter = "C";
            uint serNum = 0;
            uint maxCompLen = 0;
            StringBuilder VolLabel = new StringBuilder(256); // Label
            UInt32 VolFlags = new UInt32();
            StringBuilder FSName = new StringBuilder(256); // File System Name
            strDriveLetter += ":\\"; // fix up the passed-in drive letter for the API call
            long Ret = GetVolumeInformation(strDriveLetter, VolLabel, (UInt32)VolLabel.Capacity, ref serNum, ref maxCompLen, ref VolFlags, FSName, (UInt32)FSName.Capacity);

            txtID.Text = Convert.ToString(serNum);
        }
    }
}