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Note: The RowPrePaint and RowPostPaint events also receive a DataGridViewCellStyle object in the event data, but in their case, it is a copy of the row InheritedStyle property for read-only purposes, and changes to it do not affect the control.

You can also dynamically modify the styles of individual cells in response to events such as the CellMouseEnter and CellMouseLeave events. For example, in a handler for the CellMouseEnter event, you could store the current value of the cell background color (retrieved through the cell's Style property), then set it to a new color that will highlight the cell when the mouse hovers over it. In a handler for the CellMouseLeave event, you can then restore the background color to the original value.

Note: Caching the values stored in the cell's Style property is important regardless of whether a particular style value is set. If you temporarily replace a style setting, restoring it to its original "not set" state ensures that the cell will go back to inheriting the style setting from a higher level. If you need to determine the actual style in effect for a cell regardless of whether the style is inherited, use the cell's InheritedStyle property.