The LayoutChanged event is fired each time when the user resizes a column, or drags the column to a new position. Use the LayoutChanged event to notify your application that the columns position or size is changed. Use the LayoutChanged event to save the columns position and size for future use. Use the Width property to retrieve the column's width. Use the Position property to retrieve the column's position. The Visible property specifies whether a column is shown or hidden. Use the ColumnAutoResize property to specify whether the visible columns fit the control's client area.