C# 调用Device驱动

  using System; 
using System.IO; 
using System.ComponentModel; 
using System.Runtime.InteropServices; 
 
class Program { 
    static void Main(string[] args) { 
        IntPtr hdl = CreateFile("\\\\.\\ADVSYS", FileAccess.ReadWrite, FileShare.None, IntPtr.Zero, FileMode.Open, FileOptions.None, IntPtr.Zero); 
        if (hdl == (IntPtr)(-1)) throw new Win32Exception(); 
        try { 
            byte drawer = 1; 
            bool ok = DeviceIoControl(hdl, CTLCODE, ref drawer, 1, IntPtr.Zero, 0, IntPtr.Zero, IntPtr.Zero); 
            if (!ok) throw new Win32Exception(); 
        } 
        finally { 
            CloseHandle(hdl); 
        } 
    } 
    // P/Invoke: 
    private const uint CTLCODE = 0xdaf52480; 
    [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)] 
    private static extern IntPtr CreateFile(string filename, FileAccess access, FileShare sharing,  
          IntPtr SecurityAttributes, FileMode mode, FileOptions options, IntPtr template 
    ); 
    [DllImport("kernel32.dll", SetLastError = true)] 
    private static extern bool DeviceIoControl(IntPtr device, uint ctlcode, 
        ref byte inbuffer, int inbuffersize, 
        IntPtr outbuffer, int outbufferSize, 
        IntPtr bytesreturned, IntPtr overlapped 
    ); 
    [DllImport("kerne32.dll")] 
    private static extern void CloseHandle(IntPtr hdl); 
}