while (true)
            {
                Console.WriteLine("请输入信息");

                string msg = Console.ReadLine();
           
                if (msg == "EXIT")
                    break;

                byte[] msgBuffer = Encoding.UTF8.GetBytes(msg);

                IntPtr fileHandle;

                while (true)
                {
                    // 创建命名管道
                    fileHandle = NamedPipeNative.CreateFile(pipeName,
                        NamedPipeNative.GENERIC_READ | NamedPipeNative.GENERIC_WRITE,
                        0, null, NamedPipeNative.OPEN_EXISTING, 0, 0);

                    // 创建失败时，跳出循环
                    if (fileHandle.ToInt32() != NamedPipeNative.INVALID_HANDLE_VALUE)
                        break;

                    // 无法打开管道时，不再执行下面的操作
                    if (NamedPipeNative.GetLastError() != NamedPipeNative.ERROR_PIPE_BUSY)
                    {
                        Console.WriteLine("不能打开管道");
                        return;
                    }
                    if (!NamedPipeNative.WaitNamedPipe(pipeName, 20000))
                    {
                        Console.WriteLine("不能打开管道");
                        return;
                    }
                }