Question

i am creating windows application in C# in which i want to write in a multiple file with multiple threads.I am getting data from different ports and there is one file associated with every port.Is it possible that creation of thread for every port and use the same thread again and again for writing data to respective file? Suppose i am getting data from ports 10000,10001,10002 and there are three files as 10000.txt,10001.txt and 10002.txt. I have to create three threads for writing data to these three files respectively and i want to use these threads again and again.Is it possible?Please can you give a small sample of code if possible?

Answer 1

If you let each thread handle its own file it’ll do?

So when a port reader thread is created, you open the file that belongs to that port, and store the handle to that file. Whenever you receive data, you write it to the file:

class PortReader
{
    StreamWriter _writer;
    int _port;
    YourPort _myPort;

    public PortReader(int port)
    {
        // Do your port initialization stuff

        _writer = new StreamWriter(port + ".txt");
    }

    private void DataReceived(String data)
    {
        _writer.WriteLine(data);
    }

    public void StartReading()
    {
        while (_myPort.Connected)
        {
            // Do your port reading stuff
            String data = _myPort.ReadData();

            // Do some processing with the data

            // And now let it be written to the file
            DataReceived(data);
        }
    }
}

And then start them like such:

List<PortReader> readerList = new List<PortReader>();

readerList.Add(new PortReader(10000));
readerList.Add(new PortReader(10001));
readerList.Add(new PortReader(10002));
// etc...

foreach (PortReader reader in readerList)
{
    new Thread(new ThreadStart(reader.StartReading)).Start();
}

Ideally you want to separate the file writing from the port reading, but I’ll leave that up to you for the sake of simplicity.