Your comments

It is OK.
LinearAxis linearAxisY2 = new LinearAxis {
            Title = "Y2",
            Position = AxisPosition.Right,
            Key = "A"

lineSeries1.YAxisKey = linearAxisY2.Key;

if I drag the plot with right click ,shifting was stop,how was it stopped,any offer.Also Can I set time axis? I mean time axis show me long time. I would like to show me for example 20 s update time.