serial com port communication through scanner using C#

Question

How Do I Upload Data From Scanner Device To A Application In Computer Byte By Byte Through Com Port Opening In C# please help thanks in advance

Eric Zimmerman · Answer

The following comes from my (now stale) OpenStack project on Source Forge. The SerialPort class has a DataReceived event which you can hook up to. You could either utilize some of the framework in OpenStack and look at what the Modbus LLC is doing or simply iterate through the bytes received in the serialPort.Read() call. http://sourceforge.net/projects/openstack/ /// /// Callback when data is received from the port /// /// the event sender /// the event arguments private void Port_DataReceived(object sender SerialDataReceivedEventArgs e) { if (this.serialPort.IsOpen == false) { return; } if (e.EventType == SerialData.Chars) { IDataBuffer buffer = this.dataBuffer; byte[] payload = buffer.FirstSegment.Payload.Data; int count = Math.Min(this.serialPort.BytesToRead payload.Length - 1); count = this.serialPort.Read(payload 0 count); if (count > 0) { buffer.FirstSegment.StartPosition = 0; buffer.FirstSegment.Count = count; // Retrieve a new buffer for the next read before raising the event. this.dataBuffer = BufferPool.Instance.GetBuffer(this.bufferSize); // Raise the event with the data buffer we just read in. this.OnDataReceived(buffer); } } } I hope this helps! Eric