一个功能齐全的DataGrid分页例子

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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> 
        <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.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