How to use UdpClient.BeginReceive in a loop

Question

I want to do this

for (int i = 0; i < 100; i++ )
{
    Byte[] receiveBytes = receivingUdpClient.Receive(ref RemoteIpEndPoint);
}

But instead of using UdpClient.Receive, I have to use UdpClient.BeginReceive. The problem is, how do I do that? There aren't a lot of samples using BeginReceive, and the MSDN example is not helping at all. Should I use BeginReceive, or just create it under a separate thread?

I consistently get ObjectDisposedException exception. I only get the first data sent. The next data will throw exception.

public class UdpReceiver
{
    private UdpClient _client;
    public System.Net.Sockets.UdpClient Client
    {
        get { return _client; }
        set { _client = value; }
    }
    private IPEndPoint _endPoint;
    public System.Net.IPEndPoint EndPoint
    {
        get { return _endPoint; }
        set { _endPoint = value; }
    }
    private int _packetCount;
    public int PacketCount
    {
        get { return _packetCount; }
        set { _packetCount = value; }
    }
    private string _buffers;
    public string Buffers
    {
        get { return _buffers; }
        set { _buffers = value; }
    }
    private Int32 _counter;
    public System.Int32 Counter
    {
        get { return _counter; }
        set { _counter = value; }
    }
    private Int32 _maxTransmission;
    public System.Int32 MaxTransmission
    {
        get { return _maxTransmission; }
        set { _maxTransmission = value; }
    }

    public UdpReceiver(UdpClient udpClient, IPEndPoint ipEndPoint, string buffers, Int32 counter, Int32 maxTransmission)
    {
        _client = udpClient;
        _endPoint = ipEndPoint;
        _buffers = buffers;
        _counter = counter;
        _maxTransmission = maxTransmission;
    }
    public void StartReceive()
    {
        _packetCount = 0;
        _client.BeginReceive(new AsyncCallback(Callback), null);
    }

    private void Callback(IAsyncResult result)
    {
        try
        {
            byte[] buffer = _client.EndReceive(result, ref _endPoint);
            // Process buffer
            MainWindow.Log(Encoding.ASCII.GetString(buffer));
            _packetCount += 1;
            if (_packetCount < _maxTransmission)
            {
                _client.BeginReceive(new AsyncCallback(Callback), null);
            }
        }
        catch (ObjectDisposedException ex) 
        {
            MainWindow.Log(ex.ToString());
        }
        catch (SocketException ex) 
        { 
            MainWindow.Log(ex.ToString()); 
        }
        catch (System.Exception ex)
        {
            MainWindow.Log(ex.ToString()); 
        }
    }
}

What gives?

By the way, the general idea is:

1. Create tcpclient manager.
2. Start sending/receiving data using udpclient.
3. When all data has been sent, tcpclient manager will signal receiver that all data has been sent, and udpclient connection should be closed.

Answer 1

I think you should not use it in a loop but instead whenever the BeginReceive callback is called you call BeginReceive once more and you keep a public variable for count if you want to limit the number to 100.