日期:2014-05-18 浏览次数:20478 次
OleDbConnection MyConn; public int comid; public int PageSize, RecordCount, PageCount, CurrentPage; public void Page_Load(Object src, EventArgs e) { //设定PageSize PageSize = 20; //连接语句 string MyConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=True;Data Source="+Server.MapPath("book.mdb"); MyConn = new OleDbConnection(MyConnString); MyConn.Open(); //第一次请求执行 if (!Page.IsPostBack) { ListBind(); CurrentPage = 0; ViewState["PageIndex"] = 0; //计算总共有多少记录 RecordCount = CalculateRecord(); lblRecordCount.Text = RecordCount.ToString(); // lblRecordCount2.Text = RecordCount.ToString(); //计算总共有多少页 PageCount = RecordCount / PageSize; lblPageCount.Text = PageCount.ToString(); //lblPageCount2.Text = PageCount.ToString(); ViewState["PageCount"] = PageCount; } } //计算总共有多少条记录 public int CalculateRecord() { int intCount; string strCount = "select count(id) as co from content"; OleDbCommand MyComm = new OleDbCommand(strCount, MyConn); OleDbDataReader dr = MyComm.ExecuteReader(); if (dr.Read()) { //intCount = Int32.Parse(dr["co"].ToString()); intCount = (int)dr["co"]; } else { intCount = 0; } dr.Close(); return intCount; } ICollection CreateSource() { int StartIndex; //设定导入的起终地址 StartIndex = CurrentPage * PageSize; string strSel = "select * from Content"; DataSet ds = new DataSet(); OleDbDataAdapter MyAdapter = new OleDbDataAdapter(strSel, MyConn); MyAdapter.Fill(ds, StartIndex, PageSize, "Content"); return ds.Tables["Content"].DefaultView; } public void ListBind() { score.DataSource = CreateSource(); score.DataBind(); lbnNextPage.Enabled = true; lbnPrevPage.Enabled = true; if (CurrentPage == (PageCount - 1)) lbnNextPage.Enabled = false; if (CurrentPage == 0) lbnPrevPage.Enabled = false; lblCurrentPage.Text = (CurrentPage + 1).ToString(); //lblCurrentPage2.Text = (CurrentPage + 1).ToString(); } public void Page_OnClick(Object sender, CommandEventArgs e) { CurrentPage = (int)ViewState["PageIndex"]; PageCount = (int)ViewState["PageCount"]; string cmd = e.CommandName; //判断cmd,以判定翻页方向 switch (cmd) { case "next": if (CurrentPage < (PageCount - 1)) CurrentPage++; break; case "prev": if (CurrentPage > 0) CurrentPage--; break; case "sy": CurrentPage=0; break; case "wy": CurrentPage=PageCount-1; break; } ViewState["PageIndex"] = CurrentPage; ListBind(); MyConn.Close(); }
<form id="Form1" runat="server"> 共有<asp:Label id="lblRecordCount" ForeColor="red" runat="server" />条记录 当前为<asp:Label id="lblCurrentPage" ForeColor="red" runat="server" />/<as