Ping.OnPingCompleted(PingCompletedEventArgs) 方法
定义
引发 PingCompleted 事件。Raises the PingCompleted event.
protected:
void OnPingCompleted(System::Net::NetworkInformation::PingCompletedEventArgs ^ e);
protected void OnPingCompleted (System.Net.NetworkInformation.PingCompletedEventArgs e);
member this.OnPingCompleted : System.Net.NetworkInformation.PingCompletedEventArgs -> unit
Protected Sub OnPingCompleted (e As PingCompletedEventArgs)
参数
包含事件数据的 PingCompletedEventArgs 对象。A PingCompletedEventArgs object that contains event data.
注解
从类继承的类 Ping 可以重写此方法以执行其他任务,例如记录参数中包含的数据 e 。Classes that inherit from the Ping class can override this method to perform additional tasks, such as logging the data contained in the e parameter.
引发事件时,将通过委托调用事件处理程序。Raising an event invokes the event handler through a delegate. 有关详细信息,请参阅 处理和引发事件。For more information, see Handling and Raising Events.
OnPingCompleted 方法还允许派生类对事件进行处理而不必附加委托。The OnPingCompleted method also allows derived classes to handle the event without attaching a delegate. 这是在派生类中处理事件的首选技术。This is the preferred technique for handling the event in a derived class.
继承者说明
当 OnPingCompleted(PingCompletedEventArgs) 在派生类中重写时,请确保调用基类的 OnPingCompleted(PingCompletedEventArgs) 方法,以便注册的委托接收事件。When overriding OnPingCompleted(PingCompletedEventArgs) in a derived class, be sure to call the base class' OnPingCompleted(PingCompletedEventArgs) method so that registered delegates receive the event.