C# 调用api 问题

Question

c#通过调用api访问usb设备
其中调用DeviceIoControl函数时总是返回错误号87，意味着参数错误，请问是什么问题呢？谢谢，代码如下
    [DllImport("Kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern bool DeviceIoControl(
            IntPtr hDevice,
            uint dwIoControlCode,
            ref long InBuffer,
            int nInBufferSize,
            ref long OutBuffer,
            int nOutBufferSize,
            ref int pBytesReturned,
            ref NativeOverlapped lpOverlapped); private long ResetPort(IntPtr hDevice)
    {
      int outByte = 0;
      System.Threading.NativeOverlapped overlapped = new System.Threading.NativeOverlapped();      overlapped.InternalLow = IntPtr.Zero;
      overlapped.InternalHigh = IntPtr.Zero;
      overlapped.OffsetLow = 0;
      overlapped.OffsetHigh = 0;
      overlapped.EventHandle = CreateEvent(IntPtr.Zero, true, false, null);      long inbuffer = 0;
      DeviceIoControl(hDevice, IOCTL_SCSI_PASS_THROUGH_DIRECT, ref inbuffer, 0, ref inbuffer, 0, ref outByte,     ref overlapped);      return Marshal.GetLastWin32Error() ;
    }

Answer 1

参数转化：http://blog.csdn.net/carl2380/archive/2010/01/21/5219793.aspx

Answer 2

参数转化没有问题，都是http://pinvoke.net/default.aspx/kernel32/DeviceIoControl.html上的标准类型了

Answer 3

应该将API原始参数贴出来,才能对照

Answer 4

WINAPI
DeviceIoControl(
__in        HANDLE hDevice,
__in        DWORD dwIoControlCode,
__in_bcount_opt(nInBufferSize) LPVOID lpInBuffer,
__in        DWORD nInBufferSize,
__out_bcount_part_opt(nOutBufferSize, *lpBytesReturned) LPVOID lpOutBuffer,
__in        DWORD nOutBufferSize,
__out_opt   LPDWORD lpBytesReturned,
__inout_opt LPOVERLAPPED lpOverlapped
);WINBASEAPI
附上原始api

Answer 5

[DllImport("kernel32.dll", EntryPoint="DeviceIoControl")]
public static extern int DeviceIoControl (
    int hDevice,
    int dwIoControlCode,
    ref int lpInBuffer,
    int nInBufferSize,
    ref int lpOutBuffer,
    int nOutBufferSize,
    ref int lpBytesReturned,
    ref OVERLAPPED lpOverlapped
);http://stackoverflow.com/questions/1067216/calling-deviceiocontrol-from-c-with-ioctl-dvd-control-codes