怎么样在sharepoint 2010 中操作List的办法

        /// <summary>
        /// 删除栏
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnAddField_Click(object sender, EventArgs e)
        {
            using (SPSite site = new SPSite(requestUrl))
            {
                using (SPWeb web = site.OpenWeb())
                {
                    string listName = txtFieldList.Text.Trim();
                    SPList list = web.Lists[listName];
                    //list.Fields.Delete("Price");     //删除栏

                    //list.Update();
                }
            }
        }

        /// <summary>
        /// 修改栏
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnAddField_Click(object sender, EventArgs e)
        {
            using (SPSite site = new SPSite(requestUrl))
            {
                using (SPWeb web = site.OpenWeb())
                {
                    string listName = txtFieldList.Text.Trim();
                    SPList list = web.Lists[listName];
                    
                    //修改栏
                    //list.Fields["标题"].Title = "Title";     
                    //list.Fields["标题"].Update();

                    //list.Update();
                }
            }
        }

            using (SPSite site = new SPSite(requestUrl))
            {
                using (SPWeb web = site.OpenWeb())
                {
                    SPList bookList = web.Lists["Books"];
                    SPListItem item = bookList.Items.Add();
                    item["Title"] = "流氓是怎么炼成的";
                    item["ISBN"] = "12345";
                    item["LeadAuthor"] = "abc";
                    item.Update();
                }
            }