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親密接觸ASP.Net(14) |
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個性化分頁(2) 上一節大家沒有看到總的結構,這一節,我把代碼全部貼出來,大家好好看看。 <%@ Page Language="C#" %> <%@ Import Namespace="System.Data" %> <%@ Import Namespace="System.Data.SQL" %> <html> <script language="C#" runat="server"> void Page_Load(Object sender, EventArgs e) { //判斷是否隱藏PagerStyle-Mode if (chk1.Checked) { MyDataGrid.PagerStyle.Visible=true; } else { MyDataGrid.PagerStyle.Visible=false; } BindGrid(); } ICollection CreateDataSource() { /* 讀取數據庫的信息,獲得DataView */ SQLConnection MyConnection = new SQLConnection("server=localhost;uid=sa;pwd=123456;database=aspcn"); SQLDataSetCommand MyDataSetCommand = new SQLDataSetCommand("select * from admin_enter order by Enter_Time desc",MyConnection); DataSet ds= new DataSet(); MyDataSetCommand.FillDataSet(ds,"admin_enter"); return ds.Tables["admin_enter"].DefaultView; } void PagerButtonClick(Object sender, EventArgs e) { //獲得LinkButton的參數值 String arg = ((LinkButton)sender).CommandArgument; switch(arg) { case ("next"): if (MyDataGrid.CurrentPageIndex < (MyDataGrid.PageCount - 1)) MyDataGrid.CurrentPageIndex ++; break; case ("prev"): if (MyDataGrid.CurrentPageIndex > 0) MyDataGrid.CurrentPageIndex --; break; case ("last"): MyDataGrid.CurrentPageIndex = (MyDataGrid.PageCount - 1); break; default: //本頁值 MyDataGrid.CurrentPageIndex = arg.ToInt32(); break; } BindGrid(); } void MyDataGrid_Page(Object sender, DataGridPageChangedEventArgs e) { //處理按下數字的方法 BindGrid(); } void BindGrid() { //將DataView綁定到DataGrid上去 MyDataGrid.DataSource = CreateDataSource(); MyDataGrid.DataBind(); ShowStats(); } void ShowStats() { //顯示頁面信息 lblCurrentIndex.Text = "當前頁數為: " + ((int)MyDataGrid.CurrentPageIndex+1); lblPageCount.Text = "總頁數是: " + MyDataGrid.PageCount; } </script> <body> <h3><font face="Verdana">個性化的分頁實例^&^</font></h3> <form runat=server> <ASP:DataGrid id="MyDataGrid" runat="server" AllowPaging="True" PageSize="10" PagerStyle-Mode="NumericPages" PagerStyle-HorizontalAlign="Right" OnPageIndexChanged="MyDataGrid_Page" BorderColor="black" BorderWidth="1" GridLines="Both" CellPadding="3" CellSpacing="0" Font-Name="Verdana" Font-Size="8pt" HeaderStyle-BackColor="#aaaadd" AlternatingItemStyle-BackColor="#eeeeee" AutoGenerateColumns="false" > <property name="Columns"> <asp:BoundColumn HeaderText="工作室成員" DataField="Enter_ID" /> <asp:BoundColumn HeaderText="登陸時間" DataField="Enter_Time" /> </property> </ASP:DataGrid> <p> <asp:LinkButton id="btnFirst" runat="server" Text="首頁" CommandArgument="0" ForeColor="navy" Font-Name="verdana" Font-size="8pt" OnClick="PagerButtonClick" /> <asp:LinkButton id="btnPrev" runat="server" Text="前頁" CommandArgument="prev" ForeColor="navy" Font-Name="verdana" Font-size="8pt" OnClick="PagerButtonClick" /> <asp:LinkButton id="btnNext" runat="server" Text="後頁" CommandArgument="next" ForeColor="navy" Font-Name="verdana" Font-size="8pt" OnClick="PagerButtonClick" /> <asp:LinkButton id="btnLast" runat="server" Text="末頁" CommandArgument="last" ForeColor="navy" Font-Name="verdana" Font-size="8pt" OnClick="PagerButtonClick" /> <p> <asp:Checkbox id="chk1" runat="server" Text="顯示內置的頁數" Font-Name="Verdana" Font-Size="8pt" AutoPostBack="true" /> <p> <table bgcolor="#eeeeee" cellpadding="6"><tr><td nowrap><font face="Verdana" size="-2"> <asp:Label id="lblCurrentIndex" runat="server" /><br> <asp:Label id="lblPageCount" runat="server" /><br> </font></td></tr></table> </form> </body> </html> 上面是全部的源代碼,執行後的顯示是: 圖14-1 按下隨便一個鍵,比如"末頁" 圖14-2 看,我們的程序就直接到了最後一頁,即第5頁,我們在下面的"當前頁數"可以看到:) 我們再來點擊"顯示內置的頁數"這個復選框,看看: 圖14-3 看,我們前兩節看到的那些小數字也出來了:)
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