C# (CSharp) EventHandlerList.IsNull示例

示例#1

文件： Screen.cs 项目： weeeBox/atomic-bomberman-xna

        protected void AddEventHandler(IEventHandler handler)
        {
            if (eventHandlers.IsNull())
            {
                eventHandlers = new EventHandlerList();
            }

            eventHandlers.Add(handler);
        }