The HeaderHeight property specifies the height of the columns header bar in pixels. Use the HeaderVisible property to hide the control's header bar. Use the HeaderHeight property to specify the height of the control's header bar. Use the LevelKey property to display the control's header bar using multiple levels. If the control displays the header bar using multiple levels the HeaderHeight property gets the height in pixels of a single level in the header bar. The control's header displays multiple levels if there are two or more neighbor columns with the same non empty level key. Use the HeaderBackColor and HeaderForeColor properties to defines the colors for the control's header bar. If the HeaderSingleLine property is False, the HeaderHeight property specifies the maximum height of the control's header when the user resizes the columns.