Thank you very much for that information that helped out a lot. I do have another question that maybe you can answer.
I want to use the tooltip as a custom tooltip that displays some more information about the current point the user is pointing at.
currently I have the example code given in the tooltips api for custom tool tips.
This is the current controller method I am using.
private void tooltipController_DataPointTooltipTextNeeded(object sender, DataPointTooltipTextNeededEventArgs e)
e.Text = "Voltage:\nCurrent:\nTemperature:";
Basically I want to take the data from that current point that is showing the tooltip (X,Y info etc.) and display it for the user.