雖然說DATAGRID的分頁顯示效率不怎麼高，但是不管怎麼說，它是最方便的分頁顯示，對於做一個留言簿還是相當簡單實用的。對於啟用分頁功能還有一個重要要求，只能在DATADRID控制項的資料來源實現了ICOLLECTION介面的情況下才能啟用分頁功能，而DATAREADER沒有這個介面，所以必須使用DATATABLE來代替。
<script runat="server" language="c#">
void Page_Load()
{
string strConnection="Provider=Microsoft.Jet.OleDb.4.0;Data Source=";
strConnection+=Server.MapPath("guestbook.mdb");
OleDbConnection objConnection=new OleDbConnection(strConnection);
OleDbDataAdapter objDataAdapter=new OleDbDataAdapter("select * from guestbook",objConnection);
DataSet objDataSet=new DataSet();
objDataAdapter.Fill(objDataSet);
dgrdMain.DataSource=objDataSet;
dgrdMain.DataBind();
}
void dgrdMain_PageIndexChanged(Object sender, DataGridPageChangedEventArgs e)
{
dgrdMain.CurrentPageIndex = e.NewPageIndex;
DataBind();
}
</script>
<html>
<body>
<asp:DataGrid
id="dgrdMain"
cellpadding="1"
showheader="true"
borderwidth="0"
allowpaging="true" 啟用分頁功能
pagesize="3" 每一頁顯示三條記錄
onpageindexchanged="dgrdMain_pageindexchanged " 調用第×頁的函數為dgrdMain_PageIndexChanged()
runat="server"
/>
</body>
</html>
<script runat="server" language="vb">
subPage_Load
dim objConnection as OleDbConnection
dim objDataAdapter as OleDbDataAdapter
dim objDataSet as DataSet
objConnection=new OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0;Data Source="+Server.MapPath("guestbook.mdb"))
objDataAdapter=new OleDbDataAdapter("select * from guestbook",objConnection)
objDataSet=new DataSet
objDataAdapter.Fill(objDataSet)
dgrdMain.DataSource=objDataSet
dgrdMain.DataBind()
end sub
sub dgrdMain_PageIndexChanged(sender as object,e as datagridpagechangedeventargs)
dgrdMain.CurrentPageIndex = e.NewPageIndex
DataBind
end sub
</script>
<html>
<body>
<asp:DataGrid
id="dgrdMain"
cellpadding="1"
showheader="true"
borderwidth="0"
allowpaging="true" 啟用分頁功能
pagesize="3" 每一頁顯示三條記錄
onpageindexchanged="dgrdMain_pageindexchanged " 調用第×頁的函數為dgrdMain_PageIndexChanged()
runat="server"
/>
</body>
</html>
這樣就是最簡單的分頁，我們可以用參數pagestyle-mode="nextprev/numericpages"來設定是顯示上一頁、下一頁方式還是直接選擇頁面的數字方式來實現頁面跳轉。如果是前者我們可以用pagestyle-nextpagetext來設定包含下一頁連結的文本，用pagestyle-prevpagetext來設定包含上一頁連結的文本；如果是後者我們可以用PagerStyle-PageButtonCount來設定在使用省略符號之前顯示的頁面編號數量（預設是10）
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