事件级层发布

 

1.事件参数类

 public class WorkFlowEventArgs
    {
        private WorkFlow m_workFlow;

        public WorkFlow workFlow
        {
            get { return m_workFlow; }
            set { m_workFlow = value; }
        }

        public WorkFlowEventArgs(WorkFlow Workflow)
        {
            m_workFlow = Workflow;
        }

        public static WorkFlowEventArgs GetInstance(WorkFlow workflow)
        {
            WorkFlowEventArgs c = new WorkFlowEventArgs(workflow);
            return c;
        }
    }

    public delegate void WorkFlowEventHandler(object sender,WorkFlowEventArgs e);

2 .最基层事件控制
1) 公布事件

 public event NodeEventdHandler NodeAdding;
  /**//// <summary>
        /// 节点添加
        /// </summary>
        /// <param name="node"></param>
        public void OnNodeAdding(ref WorkFlowNode node)
        {
            if (NodeAdding != null)
            {
                NodeEvnetArgs NodeArg = new NodeEvnetArgs(node);
                NodeAdding(this, NodeArg);
                node = NodeArg.Node;
            }
        }

2)事件调用

WorkFlowNode node = null;
            OnNodeAdding(ref node);
            if (node == null) return;
            AddNodeToListView(node);
            m_workFlow.nodeCollection.Add(node);
            OnNodeAdded(node);

3中间层事件继续对外发布
public event NodeEventdHandler NodeAdding
        {
            add
            {
                t_WorkFlow.NodeAdding += value;
            }
            remove
            {
                t_WorkFlow.NodeAdding -= value;
            }
        }
4界面注册事件
直接双击该控件对应的事件,跟一般使用控件的事件一样