'宣言 Public Class GroupByRowExpansionIndicatorUIElement Inherits Infragistics.Win.ExpansionIndicatorUIElement Implements Infragistics.Win.UIAutomation.IProvideUIAutomation
public class GroupByRowExpansionIndicatorUIElement : Infragistics.Win.ExpansionIndicatorUIElement, Infragistics.Win.UIAutomation.IProvideUIAutomation