Zooming X Axis Stock Chart

[Rick]

I have an odd problem on the zooming on Stock Chart, the X Axis becomes corrupt.

When I zoom it sorts itself out.

If just plot the points with a default Layout it is OK unzoomed.

I am doing this for both types:

var xAxis = chart.PlotArea.XAxis;

xAxis.Step = Convert.ToDecimal(xAxis.Items.Count * 0.10);
xAxis.BaseUnitStep = Convert.ToInt32(xAxis.Step);
xAxis.BaseUnit = DateTimeBaseUnit.Minutes;
xAxis.EnableBaseUnitStepAuto = false;

Please see attached images.

[Rick]

Images

[Rick]

Images