/// <summary>
/// 移除消息接收事件处理程序。
/// 即同时移除私聊消息接收事件和群消息接收事件的事件处理程序。
/// </summary>
/// <param name="messageEventSource">事件源。</param>
/// <param name="handler">事件处理程序。</param>
public static void RemoveMessageReceivedEventHandler(
this IMessageEventSource messageEventSource,
EventHandler <MessageReceivedEventArgs> handler)
{
if (messageEventSource is null)
{
throw new ArgumentNullException(nameof(messageEventSource));
}
messageEventSource.UserMessageReceived -= new EventHandler <UserMessageReceivedEventArgs>(handler);
messageEventSource.GroupMessageReceived -= new EventHandler <GroupMessageReceivedEventArgs>(handler);
}
public Main(IMessageEventSource messageEventSource)
{
messageEventSource.AddMessageReceivedEventHandler(OnMessageReceived);
}
