SPSite site = new SPSite("http://spvm");
            SPWeb web = site.RootWeb;
            web.AllowUnsafeUpdates = true;//设置允许更改
            SPList list=web.Lists["Tasks"];//实例化列表名称
            for (int i = 0; i < list.Items.Count; i++)
            {
                Response.Write(list.Items[i].Title);
                Response.Write("<br/>");
            }
            SPListItem item = list.Items.Add();
            item["Title"] = "Call Tom";//向列表添加为Call Tom
            item.Update();//更新
            web.Dispose();
            site.Dispose();