How to get bitmap variable from event befor executing method AcceptTcpClientAsync

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C#

C#5.0

Bitmap

event

Hello, I'm use AForge framework and i get image capture from webcam, then i want to send this image from server to client. But the problem consists of that i get the bitmap variable, which gets in event, after executing method AcceptTcpClientAsync and bitmap variable is null. How to get image before executing method AcceptTcpClientAsync
Code:

private void Form1_Load(object sender, EventArgs e)
        {
            StartCapture();
            Form1 async = new Form1(51510);
            async.Start();
            Console.ReadLine();
        }

public void StartCapture()
        {
            VidoeCaptureDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            FinalVideo = new VideoCaptureDevice(VidoeCaptureDevices[0].MonikerString);
            FinalVideo.VideoResolution = FinalVideo.VideoCapabilities[2];
            FinalVideo.NewFrame += new NewFrameEventHandler(FinalVideo_NewFrame);
            FinalVideo.Start();
            Thread.Sleep(2000);
        }
        void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs)
        {
            video = (Bitmap)eventArgs.Frame.Clone();
        }

public async void Start()
        {
            //Thread.Sleep(10000);
            IPAddress ipAddre = IPAddress.Loopback;
            TcpListener listener = new TcpListener(ipAddre, _listeningPort);
            listener.Start();
            LogMessage("Server is running");
            LogMessage("Listening on port " + _listeningPort);

            while (true)
            {
                //CaptureImageFromCamera captureFromCamera = new CaptureImageFromCamera();
                //Bitmap image = captureFromCamera.StartCapture();
                CodingImage img = new CodingImage();
                buffer = img.CodingImages(video);
                count = buffer.Length;
                lenght = buffer.Length.ToString();
                LogMessage("Waiting for connections...");
                try
                {
                    var tcpClient = await listener.AcceptTcpClientAsync();
                    HandleConnectionAsync(tcpClient);
                }
                catch (Exception exp)
                {
                    LogMessage(exp.ToString());
                }
                i++;
            }

        }

I want to use image(bitmap video) in method CodingImages.
Hope, that someone can help me.
Sorry for my English