问下这两个API在C#中该如何申明

[cnwolfs]

int __stdcall LPC2400_ReadData (int siPipeNum,unsigned char *pucRcvBuf,int siReadLen,int siWaitTime)

int __stdcall LPC2400_WriteData(int siPipeNum,unsigned char *pucSendBuf,int siSendLen,int siWaitTime)


我的写法是：
[DllImport("EasyUSB2400.dll", EntryPoint = "LPC2400_ReadData", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
private static extern int LPC2400_ReadData(int siPipeNum, ref byte[] pucRcvBuf, int siReadLen, int siWaitTime);

[DllImport("EasyUSB2400.dll", EntryPoint = "LPC2400_WriteData", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
private static extern int LPC2400_WriteData(int siPipeNum, ref byte[] pucSendBuf, int siSendLen, int siWaitTime);

不过貌似是没成功，可以编译通过，也可以运行，但是Read取不到数据。

[gomoku]

ref byte[] pucRcvBuf

[ParanoidKing]

char *用StringBuilder去读试试

[cnwolfs]

[Quote=引用 1 楼 的回复:]
ref byte[] pucRcvBuf
[/Quote]

这个正解，多谢，不好意思，结迟了，忘记了