C# 调用Device驱动

 using System; 
using System.IO; 
using System.ComponentModel; 
using System.Runtime.InteropServices; 
 
class Program{ 
    static voidMain(string[] args){ 
        IntPtr hdl =CreateFile("\\\\.\\ADVSYS",FileAccess.ReadWrite,FileShare.None,IntPtr.Zero,FileMode.Open,FileOptions.None,IntPtr.Zero); 
        if (hdl== (IntPtr)(-1))throw newWin32Exception(); 
        try { 
            byte drawer = 1; 
            bool ok = DeviceIoControl(hdl, CTLCODE,ref drawer,1, IntPtr.Zero,0, IntPtr.Zero,IntPtr.Zero); 
            if (!ok)throw newWin32Exception(); 
        } 
        finally { 
            CloseHandle(hdl); 
        } 
    } 
    // P/Invoke: 
    private constuint CTLCODE =0xdaf52480; 
    [DllImport("kernel32.dll",CharSet =CharSet.Auto,SetLastError =true)] 
    private staticextern IntPtrCreateFile(string filename,FileAccess access,FileShare sharing,  
          IntPtr SecurityAttributes,FileMode mode,FileOptions options,IntPtr template 
    ); 
    [DllImport("kernel32.dll",SetLastError =true)] 
    private staticextern bool DeviceIoControl(IntPtr device,uint ctlcode, 
        ref byte inbuffer,int inbuffersize, 
        IntPtr outbuffer,int outbufferSize, 
        IntPtr bytesreturned,IntPtr overlapped 
    ); 
    [DllImport("kerne32.dll")] 
    private staticextern voidCloseHandle(IntPtr hdl); 
}