The style of vertical grid lines.
OptionValue can be set to one of the following valid options:
|None||No vertical grid lines|
|DotSmall||Vertical grid lines composed of small dots|
|DotLarge||Vertical grid lines composed of large dots|
|Dash||Vertical grid lines composed of dashes|
|Solid||Solid vertical grid lines|
The VerticalGridStyle property establishes the how vertical grid lines are rendered. By default, this is set to "None", which means there are no vertical grid lines. If you want to add vertical grid lines, set this to one of the other options such as "Solid". This property only affects vertical grid lines. To change horizontal grid lines, use HorizontalGridStyle.