asp.net控件DataList分页用法

protected void Page_Load(object sender, EventArgs e){  if (!IsPostBack)  {   ViewState["Page"] = 0;   Bangding();  }}//绑定数据public void Bangding(){  PagedDataSource pds = new PagedDataSource();  pds.DataSource = MerchandiseManager.GetList("");  pds.AllowPaging = true;  pds.PageSize = 5; //每页记录数  pds.CurrentPageIndex = Pager;//当前页  lblCurrPage.Text = "第" + (pds.CurrentPageIndex + 1).ToString() + "页 共" + pds.PageCount.ToString() + "页";  SetEnable(pds);//上下页按钮的有效壮态  dlistMerchand.DataSource = pds;  dlistMerchand.DataBind();}private int Pager{  get  {   return (int)ViewState["Page"];  }  set  {   ViewState["Page"] = value;  }}//下一页protected void LinkButton1_Click(object sender, EventArgs e){  Pager++;  Bangding();}//上一页protected void LinkButton2_Click(object sender, EventArgs e){  Pager--;  Bangding();}//上下页按钮的有效壮态private void SetEnable(PagedDataSource pds){  btnShang.Enabled = true;  btnXia.Enabled = true;  if (pds.IsFirstPage)  {   btnShang.Enabled = false;  }  if (pds.IsLastPage)  {   btnXia.Enabled = false;  }}