GridView导出Excel

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界面层

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridviewExportExcel.aspx.cs" Inherits="GridviewExcel" EnableEventValidation="false" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Gridview Excel</title>
    <link href="~/CSS/Gridview.css" type="text/css" rel="Stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <div id="container">
        <asp:GridView ID="GridView1" BorderColor="Black" OnRowDataBound="GridView1_RowDataBound"   runat="server" AutoGenerateColumns="False" Font-Size="12px" Width="530px" AllowSorting="True">
          <Columns>
            <asp:BoundField DataField="EmpID" HeaderText="编号" />
            <asp:BoundField DataField="EmpRealName" HeaderText="姓名" />
            <asp:BoundField DataField="EmpSex" HeaderText="性别" />
            <asp:BoundField DataField="EmpAddress" HeaderText="住址" />
          </Columns>
          <HeaderStyle BackColor="Azure" Font-Size="12px" HorizontalAlign="Center" />
            <RowStyle HorizontalAlign="Center" />
            <PagerStyle HorizontalAlign="Center" />
        </asp:GridView>
        <asp:Button ID="Button1" runat="server" Text="导出 EXCEL 表格" Height="34px" OnClick="Button1_Click" Width="263px" /></div>
    </form>
</body>
</html>

代码层

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;
/// <summary>
/// Author:伊人 Blog:http://shop68840868.taobao.com

//// Gridview从Excel中读取数据
/// </summary>
public partial class GridviewReadExcel : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    /// <summary>
    /// 在 GridView 控件中的某个行被绑定到一个数据记录时发生。此事件通常用于在某个行被绑定到数据时修改该行的内容。
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        foreach (TableCell tc in e.Row.Cells)
        {
            tc.Attributes["style"] = "border-color:Black";
        }
        if (e.Row.RowIndex != -1)
        {
            int id = GridView1.PageIndex * GridView1.PageSize + e.Row.RowIndex + 1;
            e.Row.Cells[0].Text = id.ToString();
        }
    }
    /// <summary>
    /// Inport
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void Button1_Click(object sender, EventArgs e)
    {
        GridView1.DataSource = createDataSource();
        GridView1.DataBind();
    }
    /// <summary>
    /// 以Excel为数据源获取数据集
    /// </summary>
    /// <returns></returns>
    private DataSet createDataSource()
    {
        string strCon;
        strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("~/Files/Employee.xls") + ";Extended Properties=Excel 8.0;";
        OleDbConnection con = new OleDbConnection(strCon);
        OleDbDataAdapter da = new OleDbDataAdapter("select * from [Employee$]", con);
        DataSet ds = new DataSet();
        da.Fill(ds);
        return ds;
    }
}