利用不同的服务器控件将数据导出到Excel文件

<% @ Page Language = " C# "  AutoEventWireup = " true "   CodeFile = " Default.aspx.cs "  Inherits = " _Default "  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 > 利用不同的服务器控件将数据导出到Excel文件 </ title >
</ head >
< body >
     < form id = " form1 "  runat = " server " >
     < div >
         < asp:Button ID = " outExcelBtn "  runat = " server "  Text = " Button "  OnClick = " outExcelBtn_Click "   />
     </ div >
     </ form >
</ body >
</ html >

后台代码：

using  System;
using  System.Data;
using  System.Configuration;
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.Text;

public   partial   class  _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void outExcelBtn_Click(object sender, EventArgs e)
    {
        string filename = "FileFlow.xls";

        OutPutExcel(filename); 
    }

    public void OutPutExcel(string filename)
    {
        DataTable table = new DataTable();
        table.Columns.Add("name", typeof(string));
        table.Columns.Add("age", typeof(int));
        for (int i = 0; i < 10; i++)
        {
            DataRow row = table.NewRow();
            row["name"] = "Name_" + i.ToString();
            row["age"] = 20 + i;
            table.Rows.Add(row);
        }

        DataGrid dg = new DataGrid();
        dg.DataSource = table;
        dg.DataBind();
        

        //定义文档类型、字符编码 
        Response.Clear();
        Response.Buffer = true;
        Response.Charset = "GB2312";
        //下面这行很重要， attachment 参数表示作为附件下载，您可以改成 online在线打开 
        //filename=FileFlow.xls 指定输出文件的名称，注意其扩展名和指定文件类型相符，可以为：.doc 　　 .xls 　　 .txt 　　.htm 
        Response.AppendHeader("Content-Disposition", "attachment;filename=" + filename);
        Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
        //Response.ContentType指定文件类型 可以为application/ms-excel、application/ms-word、application/ms-txt、application/ms-html 或其他浏览器可直接支持文档 
        Response.ContentType = "application/ms-excel";
        this.EnableViewState = false;
        //　定义一个输入流 
        System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);

        通过Datagrid导出Excel#region 通过Datagrid导出Excel
        //dg.RenderControl(oHtmlTextWriter);
        #endregion

        通过HTMLTable导出Excel#region 通过HTMLTable导出Excel
        /**//*HtmlTable htmlTable = new HtmlTable();
        foreach (DataRow row in table.Rows)
        {
            HtmlTableRow htmlRow = new HtmlTableRow();
            HtmlTableCell cellName = new HtmlTableCell();
            HtmlTableCell cellAge = new HtmlTableCell();
            cellName.InnerText = row["name"].ToString();
            cellAge.InnerText = row["age"].ToString();
            htmlRow.Cells.Add(cellName);
            htmlRow.Cells.Add(cellAge);
            htmlTable.Rows.Add(htmlRow);
        }
        htmlTable.RenderControl(oHtmlTextWriter);*/
        #endregion

        通过literal导出Excel#region 通过literal导出Excel
        Literal literal = new Literal();
        StringBuilder sb = new StringBuilder();
        sb.AppendLine(@"Name"+"\t"+"Age");
        foreach (DataRow row in table.Rows)
        {
            sb.AppendLine(@""+ row["name"].ToString() + "\t" + row["age"].ToString());
        }
        literal.Text = sb.ToString();
        literal.RenderControl(oHtmlTextWriter);
        #endregion

        将本页内容导出为Excel#region 将本页内容导出为Excel
        //this.RenderControl(oHtmlTextWriter); 
        //this 表示输出本页，你也可以绑定datagrid,或其他支持obj.RenderControl()属性的控件 
        #endregion

        Response.Write(oStringWriter.ToString());
        Response.End();
    }
}