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