C#调用C++接口时参数传递问题，比如 c++接口：
1：
long __stdcall SD_GetInputPass(long ReaderHandle, unsigned char ctime, unsigned char* rlen, unsigned char* cpass)
2：
long __stdcall SD_VerifyPin(long ReaderHandle, unsigned char *PIN, short *Sw1Sw2)
3：
int BankTrans(char* InputData, char* OutPutData)
等等类型，在C#中调用时应该如何传递参数？最好能整体说一下原理，拜谢各位大佬。我补充下我调用第一个接口的错误代码，这个代码调用没问题，硬件设备已经执行，只是返回结果时报错，
[DllImport(@"C:\LD_APOSA8\MisPos.dll")]
public static extern long SD_GetInputPass(long ReaderHandle, string ctime, byte[] rlen, byte[] cpass);
long ReaderHandle = long.Parse("03");
string ctime = "01";
byte[] rlen = new byte[10];
byte[] cpass = new byte[20];
SD_GetInputPass(ReaderHandle, ctime, rlen, cpass);
再补充一下，以下两种对照方式我都试过了：
//c++:unsigned char * <==> c#:ref byte
//c++:unsigned char * <==> c#:[MarshalAs(UnmanagedType.LPArray)] byte[]
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