进程间 SendMessage 字节数组 通信 问题

Question

本帖最后由 surfshark 于 2011-05-07 16:36:18 编辑

Answer 1

建议你用内存映像COPYDATASTRUCT 中就是保持的指针，数组也一样

Answer 2

进程间通信，可以用TCPClient或UDPClient类，建立两个进程的通信，调用send和receive两个方法就行
 public  struct   sendpack
        {
           public  int command;
           public  int params1;
        }
       public  struct recepack
        {
            public int rnet;
            public int valuetype;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)]
            public char[] tagname;
            public double value;
            public long timestamp;
        }
 UdpClient udpClient = new UdpClient();
        IPEndPoint Ipendport = new IPEndPoint(0,0);
       
        public bool tcp = true;
        public string tcpExcepation = "";
        public int sendandrecieve()//发送命令：1，初始化；2，关闭；3，获取信息；4，读值
        {
            try
            {
                    
                    StringBuilder sb = new StringBuilder();
                    sb.Append(sendpack1.command.ToString());
                    sb.Append(sendpack1.params1.ToString());
                    int size = Marshal.SizeOf(sendpack1);
                    System.IntPtr ptr = Marshal.AllocHGlobal(size);
                    byte[] by = new byte[size];
                    try
                    {
                        Marshal.StructureToPtr(sendpack1, ptr, true);
                        Marshal.Copy(ptr, by, 0, by.Length);
                        udpClient.Send (by,by.Length ,Ipendport);
。。