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ASP.NET 中的 一个功能齐全的DataGrid分页例子

出处:互联网   整理: 软晨网（RuanChen.com）   发布: 2009-08-14   浏览: 60 ::
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以下为引用的内容：

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