如果此消息重复，则将消息添加到忽略列表

Question

也许有人可以提供最好的方法如何在重复这条消息时忽略消息，我应该使用什么来忽略，将消息保存在列表中并遍历列表或将所有消息保存到文件中，什么是最好的方法？我正在使用以下代码从串口读取数据：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO.Ports;

namespace canSniff
    {
    class PortDataReceived
    {
        public static void Main()
        {
            SerialPort mySerialPort = new SerialPort("COM4");

            mySerialPort.BaudRate = 115200;
            mySerialPort.Parity = Parity.None;
            mySerialPort.StopBits = StopBits.One;
            mySerialPort.DataBits = 8;
            mySerialPort.Handshake = Handshake.None;
            mySerialPort.RtsEnable = true;

            mySerialPort.DataReceived += new  SerialDataReceivedEventHandler(DataReceivedHandler);

            mySerialPort.Open();

            Console.WriteLine("Press any key to continue...");
            Console.WriteLine();
            Console.ReadKey();

        }

        private static void DataReceivedHandler(
                            object sender,
                            SerialDataReceivedEventArgs e)
        {
            SerialPort sp = (SerialPort)sender;
            string indata = sp.ReadExisting();
            Console.WriteLine("Data Received:");
            Console.Write(indata);
        }
    }
}

Answer 1

您可以使用 HashSet<string> 来存储收到的消息。是否应将其保存为文件，取决于应用程序的使用方式。只要应用程序运行收到消息，下面的代码就知道。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO.Ports;

namespace canSniff
    {
    class PortDataReceived
    {

        private HashSet<string> _messages = new HashSet<string>();

        public static void Main()
        {
            SerialPort mySerialPort = new SerialPort("COM4");

            mySerialPort.BaudRate = 115200;
            mySerialPort.Parity = Parity.None;
            mySerialPort.StopBits = StopBits.One;
            mySerialPort.DataBits = 8;
            mySerialPort.Handshake = Handshake.None;
            mySerialPort.RtsEnable = true;

            mySerialPort.DataReceived += new  SerialDataReceivedEventHandler(DataReceivedHandler);

            mySerialPort.Open();

            Console.WriteLine("Press any key to continue...");
            Console.WriteLine();
            Console.ReadKey();

        }

        private static void DataReceivedHandler(
                            object sender,
                            SerialDataReceivedEventArgs e)
        {
            SerialPort sp = (SerialPort)sender;
            string indata = sp.ReadExisting();

            if(_messages.Add(indata))
            {
                 // the message was added 
                 Console.WriteLine("Data Received:");
                 Console.Write(indata);
            }
            else
            {
                  // do something with the omitted message that was allready in the list
            }
        }
    }
}

如果此消息重复，则将消息添加到忽略列表

Add message to ignore list if this message was repeated

c#

filtering

serial-port