Expand buttons enable end-users to expand or collapse field values. These buttons are displayed when two or more fields are located in the column or row header area. When a field value is collapsed, the expand button displays a 'plus' sign indicating that the field value can be expanded by clicking the button. Once a field value has been expanded, the button displays a 'minus' sign.
The table below lists the main properties that affect expand buttons appearance.
The PivotGridAppearances.ExpandButton property.
Note: the appearance settings are not in effect if the Pivot Grid Control is painted using a Windows XP, Office2003 or Skin style.