property Level.GridLineStyle as GridLinesStyleEnum
Specifies the style for the chart's vertical gridlines.

TypeDescription
GridLinesStyleEnum A GridLinesStyleEnum expression that specifies the style to show the chart's vertical gridlines.
By default, the GridLineStyle property is exGridLinesDot. The GridLineStyle property has effect only if the chart's DrawGridLines property is not zero and one of the level's DrawGridLines property is True. Use the GridLineColor property to specify the color for vertical grid lines. Use the DrawTickLines property to specify whether the grid lines between time units in the level are visible or hidden.