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  • 一个功能齐全的DataGrid分页例子

    C#版本

    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>&nbsp;
      <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>&nbsp;
      <asp:linkbutton id="btnPrev" onclick="PagerButtonClick" runat="server" Font-Name="verdana"
       Font-size="8pt" ForeColor="navy" CommandArgument="prev"></asp:linkbutton>&nbsp;
      <asp:linkbutton id="btnNext" onclick="PagerButtonClick" runat="server" Font-Name="verdana"
       Font-size="8pt" ForeColor="navy" CommandArgument="next"></asp:linkbutton>&nbsp;
      <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
    }
    }


    VB.NET版本

    DataGridPaging.aspx

    <%@ Page Language="vb" AutoEventWireup="false" Codebehind="DataGridPaging.aspx.vb" Inherits="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" 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"></HeaderStyle>
            <PagerStyle HorizontalAlign="Right" Mode="NumericPages"></PagerStyle>
          </asp:datagrid>
          <p style="font-size:9pt">
            <asp:label id="lblPageCount" runat="server"></asp:label>&nbsp;
            <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>&nbsp;
            <asp:linkbutton id="btnPrev" onclick="PagerButtonClick" runat="server"
       Font-Name="verdana" Font-size="8pt" ForeColor="navy" CommandArgument="prev">
       </asp:linkbutton>&nbsp;
            <asp:linkbutton id="btnNext" onclick="PagerButtonClick" runat="server"
       Font-Name="verdana" Font-size="8pt" ForeColor="navy" CommandArgument="next">
       </asp:linkbutton>&nbsp;
            <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.vb

    Imports System.Data.SqlClient
    Imports System.Data
    Imports System.Web.UI

    Public Class DataGridPaging
      Inherits System.Web.UI.Page

      Protected WithEvents MyDataGrid As System.Web.UI.WebControls.DataGrid
      Protected WithEvents btnFirst As System.Web.UI.WebControls.LinkButton
      Protected WithEvents btnPrev As System.Web.UI.WebControls.LinkButton
      Protected WithEvents btnNext As System.Web.UI.WebControls.LinkButton
      Protected WithEvents btnLast As System.Web.UI.WebControls.LinkButton
      Protected WithEvents lblCurrentIndex As System.Web.UI.WebControls.Label
      Protected WithEvents lblPageCount As System.Web.UI.WebControls.Label
      Protected WithEvents DataGrid1 As System.Web.UI.WebControls.DataGrid

    #Region " Web Form Designer Generated Code "

      'This call is required by the Web Form Designer.
      <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

      End Sub

      Private Sub Page_Init(ByVal sender As System.Object,_
       ByVal e As System.EventArgs) Handles MyBase.Init
        'CODEGEN: This method call is required by the Web Form Designer
        'Do not modify it using the code editor.
        InitializeComponent()
      End Sub

    #End Region

      Private Sub Page_Load(ByVal sender As System.Object,_
       ByVal e As System.EventArgs) Handles MyBase.Load
        btnFirst.Text = "最首页"
        btnPrev.Text = "前一页"
        btnNext.Text = "下一页"
        btnLast.Text = "最后页"
        OpenDatabase()
        BindGrid()
      End Sub


      Sub MyDataGrid_Page(ByVal sender As Object, ByVal e As DataGridPageChangedEventArgs)
        Dim startIndex As Integer
        startIndex = MyDataGrid.CurrentPageIndex * MyDataGrid.PageSize
        MyDataGrid.CurrentPageIndex = e.NewPageIndex
        BindGrid()
        ShowStats()
      End Sub

      Sub BindGrid()
        Dim myConnection As SqlConnection = cn
        Dim ds As DataSet = New DataSet()
        Dim adapter As SqlDataAdapter = New SqlDataAdapter("Select * from Orders", myConnection)
        adapter.Fill(ds, "Orders")
        MyDataGrid.DataSource = ds.Tables("Orders").DefaultView
        MyDataGrid.DataBind()
        ShowStats()

      End Sub

      Sub PagerButtonClick(ByVal sender As Object, ByVal e As EventArgs)
        'used by external paging UI
        Dim arg As String = sender.CommandArgument

        Select Case arg
          Case "next"
            If (MyDataGrid.CurrentPageIndex < (MyDataGrid.PageCount - 1)) Then
              MyDataGrid.CurrentPageIndex += 1
            End If
          Case "prev"
            If (MyDataGrid.CurrentPageIndex > 0) Then
              MyDataGrid.CurrentPageIndex -= 1
            End If
          Case "last"
            MyDataGrid.CurrentPageIndex = (MyDataGrid.PageCount - 1)
          Case Else
            'page number
            MyDataGrid.CurrentPageIndex = System.Convert.ToInt32(arg)
        End Select
        BindGrid()
        ShowStats()
      End Sub

      Sub ShowStats()
        lblCurrentIndex.Text = "第 " + (MyDataGrid.CurrentPageIndex + 1).ToString() + " 页"
        lblPageCount.Text = "总共 " + MyDataGrid.PageCount.ToString() + " 页"
      End Sub

     Public cn As New SqlClient.SqlConnection()
      Public Sub OpenDatabase()
        cn.ConnectionString = "Server=.;Database=NorthWind;User Id=sa;Password=;"
        cn.Open()
      End Sub
    End Class
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  • 原文地址：https://www.cnblogs.com/chinatefl/p/205657.html
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