Occurs when the value of the DataGridViewBand.DefaultCellStyle property for a row changes.
This event occurs when any property of the System.Windows.Forms.DataGridViewCellStyle returned by the DataGridViewBand.DefaultCellStyle property for a row is set to a new value or when the DataGridViewBand.DefaultCellStyle property for a row is set to a new System.Windows.Forms.DataGridViewCellStyle with at least one property value different than the previous cell style object.
For more information about handling events, see Consuming Events.