Graphics if lines and ponts in C#

It may not be so hard to do this with C# WinForm & a charting library like Zedgraph(an excellent free charting library).The first step is to establish a connection with your device.If you are using RS232 serial communication this may be accomplished with SeialPort class in System.IO.Ports namespace.Once you have connection in place you need to query data from the device via some command or if device is regularly sending data you need to receive this data via your serial port. Now you need to know how the data format is. Suppose you are receiving a CSV string data, that may be X and Y coordinates of the points , now parse this data to Point structure depending on the charting library you are using and once you have collection of these points , plot them on the graph . Now if this is relevant to what you was looking for then you need to know about using SerialPort class and ZedGraph library.Of course you can find number of excellent articles on CodeProject. In my opinion you should develop a working program without any threading and once your application is up and running then you can go for threading to improve the performance. If your data is not pumped at very high rate you may not require a multi- threading at all & also the additional complexity.