MOSS 之EventHandler学习

创建EventHandler步骤
1.新建一个类库
   该类需继承基类 SPItemEventReceicer 如下示例
  public class HrListHandler:SPItemEventReceiver
    {
        public override void ItemAdded(SPItemEventProperties properties)
        {
            //base.ItemAdded(properties);
            SPListItem item = properties.ListItem;
            string name = item["应聘者"].ToString();
            string time = Convert.ToDateTime(item["入职时间"]).ToShortDateString();
            item["标题"] = name + "(" + time+")";
            item.Update();
        }

        public override void ItemUpdated(SPItemEventProperties properties)
        {
            //base.ItemUpdated(properties);
            SPListItem item = properties.ListItem;
            string name = item["应聘者"].ToString();
            string time = Convert.ToDateTime(item["入职时间"]).ToShortDateString();
            item["标题"] = name + "(" + time + ")";
            item.Update();
        }

        public override void ItemDeleting(SPItemEventProperties properties)
        {
            //base.ItemDeleting(properties);
            properties.ErrorMessage = "不能删除应聘者信息";
            properties.Cancel = true;
        }
    }

2.将生成的类库部署到程序集中
  将dll文件拖入到C:\WINDOWS\assembly中即可部署

3.新建一个控制台应用程序
  注册事件
  如下示例
  class Program
    {
        static void Main(string[] args)
        {
            SPSite site = new SPSite("http://huyifeng:9001/sites/wodeweb/");
            SPWeb web = site.OpenWeb();
            SPList lists = web.Lists["入职表"];
            string assName = "HRListEventReceiver, Version=1.0.0.0, Culture=neutral, PublicKeyToken=43a8531282f805da";
            string claName = "HRListEventReceiver.HrListHandler";

            lists.EventReceivers.Add(SPEventReceiverType.ItemAdded, assName, claName);
            lists.EventReceivers.Add(SPEventReceiverType.ItemUpdated, assName, claName);
            lists.EventReceivers.Add(SPEventReceiverType.ItemDeleting, assName, claName);

            Console.WriteLine("It's OK");

            Console.ReadLine();
        }
    }

4.删除事件
 
  class Program
    {
        static void Main(string[] args)
        {
            SPSite site = new SPSite("http://huyifeng:9001/sites/wodeweb/");
            SPWeb web = site.OpenWeb();
            SPList lists = web.Lists["入职表"];

            for (int i = lists.EventReceivers.Count - 1; i >= 0; i--)
            {
                lists.EventReceivers[i].Delete();
            }
                Console.WriteLine("It's OK");

            Console.ReadLine();
        }
    }