Object. Opening 事件
當通訊物件轉換至開啟狀態時發生。Occurs when a communication object transitions into the opening state.
public: virtual event EventHandler ^ Opening;
public event EventHandler Opening;
member this.Opening : EventHandler
Public Event Opening As EventHandler
Opening 事件會由 OnOpening 方法引發，而此方法是由 Open 和 OnBeginOpen(TimeSpan, AsyncCallback, Object) 方法所呼叫。The Opening event is raised by the OnOpening method which is called by the Open and OnBeginOpen(TimeSpan, AsyncCallback, Object) methods.