Thank you for your suggestion! I'm pretty new to C# :)
These are the codes that I use to add axies to the PlotModel (graphMain).
These are the codes that I use to add axies to the PlotModel (graphMain).
OxyPlot.Axes.LinearAxis XAxis = new OxyPlot.Axes.LinearAxis { Position = OxyPlot.Axes.AxisPosition.Bottom, MinimumPadding = 10, MaximumPadding = 15, AbsoluteMinimum = 0,Maximum=80};
OxyPlot.Axes.LinearAxis YAxis = new OxyPlot.Axes.LinearAxis { Position = OxyPlot.Axes.AxisPosition.Left, MinimumPadding = 10, MaximumPadding = 15, AbsoluteMinimum = 0, Maximum=400};
graphMain.Model.Axes.Add(YAxis);
graphMain.Model.Axes.Add(XAxis);