请问怎么移除List中的类,帮忙看一下下面代码.
   

public partial class operate : System.Web.UI.Page
    {
        private int id = 0;
        private List<Model.Keys> lists = null;
        public operate() { lists = new List<Model.Keys>(); }
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!int.TryParse(Request.QueryString["id"].ToString(), out id))
                id = 0;
            if (!IsPostBack) {
                lists = new SQLserverDAL.KeysDAL().Items(id, Convert.ToByte(DateTime.Now.AddMonths(-month).Month));
                ViewState["lists"] = lists;
                this.list.DataSource = lists;
                this.list.DataBind();
            }
        }
        protected void ReMove_Click(object sender, CommandEventArgs e) {
            int id = Convert.ToInt32();
            lists = (List<Model.Keys>)ViewState["lists"];
            lists.Remove(new SQLserverDAL.KeysDAL().Item(id));
            ViewState["lists"] = lists;
            this.list.DataSource = lists;
            this.list.DataBind();
        }
    }

 
lists.Remove(new SQLserverDAL.KeysDAL().Item(id))返回的总是False..请问是那个地方错误了.

lists.Remove(new SQLserverDAL.KeysDAL().Item(id));

lists.Remove( )这括号里面的Model.Keys 类型的对象必须是lists里面存在的, 而你这句话new了一个新的,lists不可能能找到它,再remove掉的

但这个新的Model.Keys和这个List中的某一项是同一个Model.Keys呀,不是这样找匹配项吗?? 因为第一次用这个功能.楼上大哥可不可以给我详细说一下..

呵呵,搞定了..谢谢.
lists.RemoveAll(delegate(Model.Keys k) { return k.ID == id; });