C# 调用c++ 实例

typedef struct 
{
        int deviceID;          //阅读器逻辑ID
        char address[20];      //IP地址或串口；如"COM1"，"10.86.10.56"
        int status;            //0-未链接；1-已链接，未初始化;2-已链接，已初始化
        int style;             //0-网络客户端；1-网络服务端;2-串口
} ReaderItem;



typedef struct 
{       
        int length; 
        unsigned char tagData[2048]; //标签长度1byte(lenth字)+标签epc码(lenth*2)byte+标签长度1byte+标签epc码
} InventoryResult;

 public class RFIDBaseManage
    {

        [DllImport("xxx.dll")]
        public static extern int Connect(string dev, ref int devid);

        [DllImport("xxx.dll")]
        public static extern int Disconnect(int devid);

        [DllImport("xxx.dll", EntryPoint = "GetReaders")]
        public static extern int GetReaders(ref ReaderItem item,int maxCount,ref int count);
    }

    public class RFIDInfoManage
    {
        [DllImport("xxx.dll", EntryPoint = "EPC1G2_Inventory")]
         public static extern int EPC1G2_Inventory(int DeviceID, short antennalID, ref InventoryResult result);
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct ReaderItem
    {
        
        public int deviceID;   
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 20)]
        public string address;  //IP地址或串口；如"COM1"，"10.86.10.56"

        public int status;  
        public int style;  
    }


    [StructLayout(LayoutKind.Sequential)]
    public struct InventoryResult
    {
        public int length;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2048)]
        public byte[] tagData;      }