typedef struct 
{ 
 unsigned char Port; 
 unsigned long Id; 
 unsigned char Ctrl; 
 unsigned char pData[8]; 
}HSCAN_MSG; 

extern "C" int _stdcall HSCAN_SendCANMessage(unsigned char nDevice,unsigned char nPort,HSCAN_MSG *msg,int nLength);

.... 
HSCAN_MSG msg[100]; 
..... 
HSCAN_SendCANMessage(m_nDevice,m_nPort,msg,nFrames); 

[StructLayout(LayoutKind.Sequential)] 
 public struct HSCAN_MSG 
 { 
　　　　// UnmanagedType.ByValArray， [MarshalAs(UnmanagedType.U1)]这个非常重要，就是申明对应类型和长度的 
 [MarshalAs(UnmanagedType.U1)] 
 public byte Port; 
 [MarshalAs(UnmanagedType.U4)] 
 public uint nId; 
 [MarshalAs(UnmanagedType.U1)] 
 public byte nCtrl; 
 [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)] 
 public byte[] pData; 
 }; 

[DllImport("HS2106API.dll")] 
 public static extern int HSCAN_SendCANMessage( 
 byte nDevice, byte nPort, HSCAN_MSG[] pMsg, int nLength); 

HSCAN_MSG[] msg = new HSCAN_MSG[1]; //发送缓冲区大小可根据需要设置； 
 for (int yy = 0; yy < msg.Length; yy++) 
 { 
 msg[yy] = new HSCAN_MSG(); 
 } 
　　　　//...结构体中的成员的实例化略 
　　　　HSCAN_SendCANMessage(0x0, 0x0, msg, 1) 

typedef struct 
{ 
 unsigned char Port; 
 unsigned long Id; 
 unsigned char Ctrl; 
 unsigned char pData[8]; 
}HSCAN_MSG; 

extern "C" int _stdcall HSCAN_SendCANMessage(unsigned char nDevice,unsigned char nPort,HSCAN_MSG *msg,int nLength); 

[StructLayout(LayoutKind.Sequential)] 
 public struct HSCAN_MSG 
 { 
 [MarshalAs(UnmanagedType.U1)] 
 public byte Port; 
 /// <summary> 
 /// 节点标识，nEFF=1 时（扩展帧），为29 位nEFF=0（标准帧）时，为11 位； 
 /// </summary> 
 [MarshalAs(UnmanagedType.U4)] 
 public uint nId; 
 [MarshalAs(UnmanagedType.U1)] 
 public byte nCtrl; 
 [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)] 
 public byte[] pData; 
 }; 

HSCAN_MSG[] msg1 = new HSCAN_MSG[10]; 
 for (int i = 0; i < msg1.Length; i++) 
 { 
 msg1[i] = new HSCAN_MSG(); 
 msg1[i].pData = new byte[8]; 
 } 
 IntPtr[] ptArray = new IntPtr[1]; 
 ptArray[0] = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(HSCAN_MSG)) * 10); 
 IntPtr pt = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(HSCAN_MSG))); 
 Marshal.Copy(ptArray, 0, pt, 1); 
 
 int count = HSCAN_ReadCANMessage(0x0, 0,pt, 10); 
 
 textBoxStatus.Text += "/r/n" + "读取0口：" + count.ToString() + "帧数据"; 
 for (int j = 0; j < 10; j++) 
 { 
 msg1[j] = 
 (HSCAN_MSG)Marshal.PtrToStructure((IntPtr)((UInt32)pt+ j * Marshal.SizeOf(typeof(HSCAN_MSG))) 
 , typeof(HSCAN_MSG)); 
 textBoxStatus.Text += "/r/n收到0口" + Convert.ToByte(msg1[j].pData[0]).ToString() 
 + "|" + Convert.ToByte(msg1[j].pData[1]).ToString() 
 + "|" + Convert.ToByte(msg1[j].pData[2]).ToString() 
 + "|" + Convert.ToByte(msg1[j].pData[3]).ToString() 
 + "|" + Convert.ToByte(msg1[j].pData[4]).ToString() 
 + "|" + Convert.ToByte(msg1[j].pData[5]).ToString() 
 + "|" + Convert.ToByte(msg1[j].pData[6]).ToString() 
 + "|" + Convert.ToByte(msg1[j].pData[7]).ToString(); 
 }