Plotter Control (a-la Task Manager Performance History Graphs)

• Download source files - 15 Kb
• Download demo project - 8 Kb

Introduction

I made this control as a favor to my friend who is an electrical engineer.  He needed a Task Manager style control to display a sampled signal coming from a device that he was making.  I did a quick search on codeproject, and the closest thing I could find was Anup. V.’s Plotter control but it lacked the scrolling capability.  So I finally had to get my hands dirty and made this plotter control.  Now I’m posting it here guessing that there might be other electrical engineers out there who are in a desperate need of such a control.

 

Demo Project

 

 

Tip: Use the vertical track bar to change the current value.

 

Using the Plotter Control

• Set the Min & Max properties.

• Set the BackColor & ForeColor properties to adjust the colors to your liking.

• Use the Add method to add new values periodically (e.g. from a timer event handler).

 

Changes History

01/03/2006

Fixed a bug when the graph was drawn incorrectly when the control was put on a form with AutoScaleMode different than None and the system font size was different from the size the application was built with.