// gridlines are not moving along as the line point changes. what code should I add to make it look like the cpu performance chart?
Series test1 = new Se
You have two options:
The former option is what you eventually need to do anyway if you are adding DataPoints fast or long..
You may also want to use zooming to look back into the past. If you need to keep the data, you could still add the removed points into a list in memory and bring them back when needed.