Synchronous and asynchronous reading from buffer

[orcunor]

I want to read buffer both synchronously and asynchronously, but when the asynchronous method is running, I cannot read synchronously. Can anybody help me ?

Here is my sample code:

private async void btnConnect_Click(object sender, EventArgs e) { try { //Configure logging var loggerFactory = LoggerFactory.Create((builder) => { _ = builder.AddDebug().SetMinimumLevel(LogLevel.Trace); });

            //Register the factory for creating Hid devices. 
            var hidFactory =
                new FilterDeviceDefinition(vendorId: 0x1781, productId: 0x7D1)
                .CreateWindowsHidDeviceFactory(loggerFactory);

            var usbFactory =
                new FilterDeviceDefinition(vendorId: 0x1781, productId: 0x7D1)
                .CreateWindowsUsbDeviceFactory(loggerFactory);

            

            //Join the factories together so that it picks up either the Hid or USB device
            var factories = hidFactory.Aggregate(usbFactory);

            //Get connected device definitions
            var deviceDefinitions = (await factories.GetConnectedDeviceDefinitionsAsync().ConfigureAwait(false)).ToList();
            //Console.WriteLine(deviceDefinitions.Count);
           
            if (listBox1.InvokeRequired)
                listBox1.BeginInvoke((MethodInvoker)delegate () { listBox1.Items.Add("Count of device: " + deviceDefinitions.Count.ToString()); ; });
                 
            else
                listBox1.Items.Add("Count of device: " + deviceDefinitions.Count.ToString());
           
             myDevice = await hidFactory.GetDeviceAsync(deviceDefinitions.FirstOrDefault()).ConfigureAwait(false);

            //Initialize the device
            await myDevice.InitializeAsync().ConfigureAwait(false);




            while (myDevice.IsInitialized)
            {
                buffer = new byte[65];
                var readBuffer = await myDevice.WriteAndReadAsync(buffer).ConfigureAwait(false);
                

                
                listBox1.Items.Add("Read Async from buffer bytes: " + BitConverter.ToString(readBuffer));
                
            }
        }
        catch (Exception ex)
        {

            MessageBox.Show(ex.Message);
        }



    }

    private void btnOpen_Click(object sender, EventArgs e)
    {
        try
        {
            var buffer = new byte[9];
            buffer[0] = 0x00;
            buffer[1] = 0x15;
            buffer[2] = 0x00;  
            buffer[3] = 0x00;  
            buffer[4] = 0x01;
            buffer[5] = 0x19;
            buffer[6] = 0x00;
            buffer[7] = 0x00;
            buffer[8] = 0x00;


            //Write and read the data to the device
            var readBuffer = myDevice.WriteAndReadAsync(buffer).ConfigureAwait(false);

           

        }
        catch (Exception ex)
        {

            MessageBox.Show(ex.Message);
        }

    }

When the connect button is pressed, the asynchronous reading continues in the back, but I want to do the synchronous writing and reading operations at the same time. I am aware that this code is not working correctly. Is there anyone who can help?

[MelbourneDeveloper]

You need to use the async modifier on the event handler and use the await keyword with WriteAndReadAsync

[orcunor]

private async void btnOpen_Click(object sender, EventArgs e) { try { var buffer = new byte[9]; buffer[0] = 0x00; buffer[1] = 0x15; buffer[2] = 0x00; // buffer[3] = 0x00; // buffer[4] = 0x01; buffer[5] = 0x19; buffer[6] = 0x00; buffer[7] = 0x00; buffer[8] = 0x00;

            //Write and read the data to the device
            var readBuffer = await MyDevice.WriteAndReadAsync(buffer).ConfigureAwait(false);
           
        }
        catch (Exception ex)
        {

            MessageBox.Show("Open Click Exception: " + ex.Message);
        }
        

    }

I do code like that but never changes

[MelbourneDeveloper]

What's the issue?

[orcunor]

When the connect button is pressed, I want it to listen to the buffer asynchronously and write the data coming to the listbox, at the same time to read an write it synchronously using the open-close functions and to write the incoming data to the listbox.

This code I wrote listens when the connect button is pressed, but only once writes the data to the listbox and the data from the open-close functions are never written to the listbox. I think it continues to listen asynchronously when the connect button is pressed, when I press the open-close button I think it does not change the thread and I cannot catch the data from the buffer. I can only see the data from the buffer once, and it happens only once when the connect button is clicked.

In short, how can I write and read data from the buffer asynchronously and synchronously at the same time? Is it possible ?

[orcunor]

When I click the connect button, although there is no action, a data comes from the buffer and it comes only once and I can see it, but I want it to listen continuously for any action and to write the bytes from the buffer into the listbox continuously until the program is closed.

[MelbourneDeveloper]

In short, how can I write and read data from the buffer asynchronously and synchronously at the same time? Is it possible

I'm sorry but I do not understand what you mean. That is not possible. I'm going to close this issue soon.