GridView BS 用法

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" OnPageIndexChanging="GridView1_PageIndexChanging"
    PageSize="5" AutoGenerateColumns="False" DataKeyNames="id,name" OnRowCommand="GridView1_RowCommand">
    <PagerSettings FirstPageText="首页" LastPageText="尾页" Mode="NextPreviousFirstLast"
        NextPageText="下一页" PreviousPageText="上一页" />
    <Columns>
        <asp:BoundField DataField="name" HeaderText="姓名" />
        <asp:BoundField DataField="age" HeaderText="年龄" />
        <asp:BoundField DataField="add" HeaderText="地址" />
        <asp:ButtonField CommandName="add" Text="添加" />
        <asp:ButtonField CommandName="del" Text="删除" />
    </Columns>
</asp:GridView>

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DataToBind();
        }
    }

    private void DataToBind()
    {
        GridView1.DataSource = GridViewSource();
        GridView1.DataBind();
    }

    private List<Log> GridViewSource()
    {
        List<Log> logs = new List<Log>();        
        for (int i = 1; i < 21; i++)
        {
            Log log = new Log();
            log.Id = i;
            log.Title = "Title" + i;
            log.LogContext = "LogContext" + i;
            logs.Add(log);
        }
        return logs;
    }

    public class Log
    {
        private int id;

        public int Id
        {
            get { return id; }
            set { id = value; }
        }

        private string title;

        public string Title
        {
            get { return title; }
            set { title = value; }
        }

        private string logContext;

        public string LogContext
        {
            get { return logContext; }
            set { logContext = value; }
        }
    }

    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "add")
        {
            //e.CommandArgument 为当前页选定的行，下标从 0 开始
            //GridView1.DataKeys[index].Values[2].ToString() 
            //为当前选中的行所对应的在 DataKeyNames="Id,Title,LogContext" 的值。
            int index = Convert.ToInt32(e.CommandArgument);
            //此时输出的是选中行的 Title 的值
            string now = GridView1.DataKeys[index].Values[1].ToString(); 
            Response.Write(index + " | " + now);
        }
    }
    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        DataToBind();
    }