关于DataList的分页源代码（与大家共享）

OleDbConnection MyConn;
int PageSize,RecordCount,PageCount,CurrentPage;
public void Page_Load(Object src,EventArgs e)
{
 //设定PageSize
 PageSize = 10;

 //连接语句
 string MyConnString = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source="+Server.MapPath(".")+"..\\DataBase\\db1.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();

  //计算总共有多少页
  PageCount = RecordCount/PageSize;
  lblPageCount.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(*) as co from Score";
 OleDbCommand MyComm = new OleDbCommand(strCount,MyConn);
 OleDbDataReader dr = MyComm.ExecuteReader();
 if(dr.Read())
 {
  intCount = Int32.Parse(dr["co"].ToString());
 }
 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 Score";
 DataSet ds = new DataSet();

 OleDbDataAdapter MyAdapter = new OleDbDataAdapter(strSel,MyConn);
 MyAdapter.Fill(ds,StartIndex,PageSize,"Score");

 return ds.Tables["Score"].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();

}

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;
 }

 ViewState["PageIndex"] = CurrentPage;

 ListBind();

}
</script>
<html>
<head>
<title></title>
</head>
<body>
<form runat="server">
共有<asp:Label id="lblRecordCount" ForeColor="red" runat="server" />条记录&nbsp;
当前为<asp:Label id="lblCurrentPage" ForeColor="red" runat="server" />/<asp:Label id="lblPageCount" ForeColor="red" runat="server" />页&nbsp;

<asp:DataList id="score" runat="server"
HeaderStyle-BackColor="#aaaadd"
AlternatingItemStyle-BackColor="Gainsboro"
EditItemStyle-BackColor="yellow"
>
 <ItemTemplate>
  姓名：<%# DataBinder.Eval(Container.DataItem,"Name") %>
  <asp:LinkButton id="btnSelect" Text="编辑" CommandName="edit" runat="server" />
 </ItemTemplate>
</asp:DataList>
<asp:LinkButton id="lbnPrevPage" Text="上一页" CommandName="prev" OnCommand="Page_OnClick" runat="server" />
<asp:LinkButton id="lbnNextPage" Text="下一页" CommandName="next" OnCommand="Page_OnClick" runat="server" />

</form>
</body>
</html>


 

posted on 2008-07-29 23:00  Anything.NET  阅读(485)  评论(1)  编辑  收藏  举报

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