DataList分页、增加、删除、修改实例[6]

p;  ddlJumpToPageNum.Items.Clear();
                for( int i=1;i<=pageNum;i++ )
                {
                    ddlJumpToPageNum.Items.Add(i.ToString());
                }
                lblPageNum.Text = pageNum.ToString();
                ViewState["PageRowNum"] = pageRecNum;
                ViewState["RecNum"] = recNum;
                ViewState["PageNum"] = pageNum;
                //-----------------curPageNO
                curPageNO = 1;
                ViewState["CurPageNO"] = curPageNO;
                //------------------
            }
            pageRecNum = Convert.ToInt32(ViewState["PageRowNum"]);
            recNum = Convert.ToInt32(ViewState["RecNum"]);
            curPageNO = Convert.ToInt32(ViewState["CurPageNO"]);
            pageNum = Convert.ToInt32(ViewState["PageNum"]);
            //------------pageNum
            if ( pageRecNum==-1 || recNum==-1 )
            {
                Response.Write("发生错误!");
                Response.End();
            }
            if ( curPageNO <= 1 )
            {
                curPageNO = 1;
                btnFirst.Enabled = false;
                btnPreview.Enabled = false;
            }
            //-----------------
            lblRecNum.Text = recNum.ToString();
            lblCurPageNO.Text = curPageNO.ToString();

            //-----------------
            if ( !Page.IsPostBack )
            {
                BindData();
            }

        }