一个功能齐全的DataGrid分页例子

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一个功能齐全的DataGrid分页例子

作者:不详来源:网络编辑:阿志

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下面的这个例子提供了DataGrid的分页功能。aspx代码和Cohe Behind代码分别如下，注意更改数据录连接字符串。结果如下：

C#版本 例子

DataGridPaging.aspx

<%@ Page language="c#" EnableViewState = "true" Codebehind="DataGridPaging.aspx.cs" AutoEventWireup="false" Inherits="eMeng.Exam.DataGridPaging.DataGridPaging" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <meta content="Visual Basic 7.0" name="CODE_LANGUAGE"> <meta content="JavaScript" name="vs_defaultClientScript"> <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema"> </HEAD> <body MS_POSITIONING="GridLayout"> <form id="Form1" runat="server"> <asp:datagrid id="MyDataGrid" runat="server" AutoGenerateColumns="False" HorizontalAlign="Center" AlternatingItemStyle-BackColor="#eeeeee" HeaderStyle-BackColor="#aaaadd" Font-Size="8pt" Font-Name="Verdana" CellSpacing="0" CellPadding="3" GridLines="Both" BorderWidth="1" BorderColor="black" OnPageIndexChanged="MyDataGrid_Page" PagerStyle-HorizontalAlign="Right" PagerStyle-Mode="NumericPages" PageSize="5" AllowPaging="True"> <AlternatingItemStyle BackColor="#EEEEEE"></AlternatingItemStyle> <HeaderStyle BackColor="#AAAADD" Font-Bold="True" HorizontalAlign="Center"></HeaderStyle> <PagerStyle HorizontalAlign="Right" Mode="NumericPages"></PagerStyle> <Columns> <asp:BoundColumn HeaderText="标题" DataField="Title" HeaderStyle-Width="480px"> </asp:BoundColumn> <asp:BoundColumn HeaderText="发表日期" DataField="CreateDate" DataFormatString="{0:yyyy-MM-dd hh:mm:ss}"> </asp:BoundColumn> </Columns> </asp:datagrid> <p style="FONT-SIZE:9pt" align="center"> <asp:label id="lblPageCount" runat="server"></asp:label>  <asp:label id="lblCurrentIndex" runat="server"></asp:label> <asp:linkbutton id="btnFirst" onclick="PagerButtonClick" runat="server" Font-Name="verdana" Font-size="8pt" ForeColor="navy" CommandArgument="0"></asp:linkbutton>  <asp:linkbutton id="btnPrev" onclick="PagerButtonClick" runat="server" Font-Name="verdana" Font-size="8pt" ForeColor="navy" CommandArgument="prev"></asp:linkbutton>  <asp:linkbutton id="btnNext" onclick="PagerButtonClick" runat="server" Font-Name="verdana" Font-size="8pt" ForeColor="navy" CommandArgument="next"></asp:linkbutton>  <asp:linkbutton id="btnLast" onclick="PagerButtonClick" runat="server" Font-Name="verdana" Font-size="8pt" ForeColor="navy" CommandArgument="last"></asp:linkbutton> </p> </form> </body> </HTML>

DataGridPaging.aspx.cs

using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Data.OleDb; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; namespace eMeng.Exam.DataGridPaging { /// <summary> /// DataGridPaging 的摘要说明。 /// </summary> public class DataGridPaging : System.Web.UI.Page { protected System.Web.UI.WebControls.DataGrid MyDataGrid; protected System.Web.UI.WebControls.Label lblPageCount; protected System.Web.UI.WebControls.Label lblCurrentIndex; protected System.Web.UI.WebControls.LinkButton btnFirst; protected System.Web.UI.WebControls.LinkButton btnPrev; protected System.Web.UI.WebControls.LinkButton btnNext; protected System.Web.UI.WebControls.LinkButton btnLast; private OleDbConnection cn = new OleDbConnection(); private void Page_Load(object sender, System.EventArgs e) { // 在此处放置用户代码以初始化页面 btnFirst.Text = "最首页"; btnPrev.Text = "前一页"; btnNext.Text = "下一页"; btnLast.Text = "最后页"; OpenDatabase(); BindGrid(); } private void OpenDatabase() { cn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("xxxx.mdb"); cn.Open(); } private void ShowStats() { lblCurrentIndex.Text = "第 " + (MyDataGrid.CurrentPageIndex + 1).ToString() + " 页"; lblPageCount.Text = "总共 " + MyDataGrid.PageCount.ToString() + " 页"; } public void PagerButtonClick(object sender, EventArgs e) { string arg = ((LinkButton)sender).CommandArgument.ToString(); switch(arg) { case "next": if (MyDataGrid.CurrentPageIndex < (MyDataGrid.PageCount - 1)) { MyDataGrid.CurrentPageIndex += 1; } break; case "prev": if (MyDataGrid.CurrentPageIndex > 0) { MyDataGrid.CurrentPageIndex -= 1; } break; case "last": MyDataGrid.CurrentPageIndex = (MyDataGrid.PageCount - 1); break; default: MyDataGrid.CurrentPageIndex = System.Convert.ToInt32(arg); break; } BindGrid(); ShowStats(); } public void BindGrid() { OleDbConnection myConnection = cn; DataSet ds = new DataSet(); OleDbDataAdapter adapter = new OleDbDataAdapter("Select Title,CreateDate from Document", myConnection); adapter.Fill(ds, "Document"); MyDataGrid.DataSource = ds.Tables["Document"].DefaultView; MyDataGrid.DataBind(); ShowStats(); } public void MyDataGrid_Page(object sender, DataGridPageChangedEventArgs e) { int startIndex ; startIndex = MyDataGrid.CurrentPageIndex * MyDataGrid.PageSize; MyDataGrid.CurrentPageIndex = e.NewPageIndex; BindGrid(); ShowStats(); } #region Web Form Designer generated code override protected void OnInit(EventArgs e) { // // CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。 // InitializeComponent(); base.OnInit(e); } /// <summary> /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// </summary> private void InitializeComponent() { this.Load += new System.EventHandler(this.Page_Load); } #endregion } }

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