将 GridView 中的内容导出到 Excel 中多个工作表（Sheet） 的方法

Excel 可以保存成 xml 格式，并且支持Sheet功能，因此，我们就可以利用这个功能将 Gridview 导出到多个 Sheet  中去。而且可以很好地控制导出的格式。下面就是完整的代码（注意：本站的代码都是可以直接复制、保存成aspx文件运行的。）：

例子

ASPX 代码
<%@ Page Language="C#" EnableViewState="true" %>

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

<script runat="server">

  protected void Page_Load(object sender, EventArgs e)
  {
    if (!Page.IsPostBack)
    {
      System.Data.DataTable dt = new System.Data.DataTable();
      System.Data.DataRow dr;
      dt.Columns.Add(new System.Data.DataColumn("学生班级", typeof(System.String)));
      dt.Columns.Add(new System.Data.DataColumn("学生姓名", typeof(System.String)));
      dt.Columns.Add(new System.Data.DataColumn("语文", typeof(System.Decimal)));
      dt.Columns.Add(new System.Data.DataColumn("数学", typeof(System.Decimal)));
      dt.Columns.Add(new System.Data.DataColumn("英语", typeof(System.Decimal)));
      dt.Columns.Add(new System.Data.DataColumn("计算机", typeof(System.Decimal)));
      System.Random rd = new System.Random();
      for (int i = 0; i < 88; i++)
      {
        dr = dt.NewRow();
        dr[0] = "班级" + i.ToString();
        dr[1] = "【孟子E章】" + i.ToString();
        dr[2] = System.Math.Round(rd.NextDouble() * 100, 0);
        dr[3] = System.Math.Round(rd.NextDouble() * 100, 0);
        dr[4] = System.Math.Round(rd.NextDouble() * 100, 0);
        dr[5] = System.Math.Round(rd.NextDouble() * 100, 0);
        dt.Rows.Add(dr);
      }
      GridView1.DataSource = dt;
      GridView1.DataBind();
    }
  }

  protected void Button1_Click(object sender, EventArgs e)
  {
    //假如每10条数据放在一个 Sheet 里面，先计算需要多少个 Sheet
    int ItenCountPerSheet = 10;
    int SheetCount = Convert.ToInt32(Math.Ceiling((double)GridView1.Rows.Count / ItenCountPerSheet));

    String ExportFileName = "孟宪会Excel表格测试";
    if (Request.Browser.Browser.IndexOf("MSIE") > -1)
    {
      ExportFileName = Server.UrlEncode(ExportFileName);
    }
    Response.ClearContent();
    Response.BufferOutput = true;
    Response.Charset = "utf-8";
    Response.ContentType = "text/xml";
    Response.ContentEncoding = System.Text.Encoding.UTF8;
    Response.AppendHeader("Content-Disposition", "attachment;filename=" + ExportFileName + ".xls");
    // 采用下面的格式，将兼容 Excel 2003,Excel 2007, Excel 2010。
    // Response.AppendHeader("Content-Disposition", "attachment;filename="+Server.UrlEncode("孟宪会Excel表格测试")+".xml");
    Response.Write("<?xml version='1.0'?><?mso-application progid='Excel.Sheet'?>");
    Response.Write(@"\r\n<Workbook xmlns='urn:schemas-microsoft-com:office:spreadsheet'
      xmlns:o='urn:schemas-microsoft-com:office:office' xmlns:x='urn:schemas-microsoft-com:office:excel'
      xmlns:ss='urn:schemas-microsoft-com:office:spreadsheet' xmlns:html='http://www.w3.org/TR/REC-html40'>");
    Response.Write(@"\r\n<DocumentProperties xmlns='urn:schemas-microsoft-com:office:office'>");
    Response.Write(@"\r\n<Author>孟宪会</Author><LastAuthor>孟子E章</LastAuthor>
          <Created>2010-09-08T14:07:11Z</Created><Company>mxh</Company><Version>1990</Version>");
    Response.Write("\r\n</DocumentProperties>");
    Response.Write(@"\r\n<Styles><Style ss:ID='Default' ss:Name='Normal'><Alignment ss:Vertical='Center'/>
      <Borders/><Font ss:FontName='宋体' x:CharSet='134' ss:Size='12'/><Interior/><NumberFormat/><Protection/></Style>");
    //定义标题样式    
    Response.Write(@"<Style ss:ID='Header'><Borders><Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>
       <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>
       <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>
       <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/></Borders>
       <Font ss:FontName='宋体' x:CharSet='134' ss:Size='18' ss:Color='#FF0000' ss:Bold='1'/></Style>");
    
    //定义边框
    Response.Write(@"<Style ss:ID='border'><NumberFormat ss:Format='@'/><Borders>
      <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>
      <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>
      <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>
      <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/></Borders></Style>");
      
    Response.Write("</Styles>");


    for (int i = 0; i < SheetCount; i++)
    {
      //计算该 Sheet 中的数据起始行和结束行。
      int start = ItenCountPerSheet * i;
      int end = ItenCountPerSheet * (i + 1);
      if (end > GridView1.Rows.Count) end = GridView1.Rows.Count;
    
      Response.Write("\r\n<Worksheet ss:Name='Sheet" + (i+1) + "'>");
      Response.Write("\r\n<Table x:FullColumns='1' x:FullRows='1'>");
      //输出标题

      Response.Write("\r\n<Row ss:AutoFitHeight='1'>");
        for (int j = 0; j < GridView1.HeaderRow.Cells.Count; j++)
        {
          Response.Write("<Cell ss:StyleID='Header'><Data ss:Type='String'>" + GridView1.HeaderRow.Cells[j].Text + "</Data></Cell>");
        }
          Response.Write("\r\n</Row>");

       for (int j = start; j < end; j++)
        {
          Response.Write("\r\n<Row>");
          for (int c = 0; c < GridView1.HeaderRow.Cells.Count; c++)
          {
            //对于数字，采用Number数字类型
            if (c > 1)
            {
              Response.Write("<Cell ss:StyleID='border'><Data ss:Type='Number'>" + GridView1.Rows[j].Cells[c].Text + "</Data></Cell>");
            }
            else
            {
              Response.Write("<Cell ss:StyleID='border'><Data ss:Type='String'>" + GridView1.Rows[j].Cells[c].Text + "</Data></Cell>");
            }
          }
            Response.Write("\r\n</Row>");
        }
      Response.Write("\r\n</Table>");
      Response.Write("\r\n</Worksheet>");
      Response.Flush();
    }
    Response.Write("\r\n</Workbook>");
    Response.End();
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title></title>
</head>
<body>
  <form id="form1" runat="server">
  <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="导出测试" />
  <asp:GridView ID="GridView1" runat="server">
  </asp:GridView>
  </form>
</body>
</html>

另外，请注意：代码里面添加了\r\n换行，是为了生成出来的xml格式有换行，实际可以不用。

如果是DataTable，DataSet，可以直接导出成文件。下面是完整的源代码：

C# 代码
<%@ Page Language="C#" %>

<script runat="server">

  protected void Page_Load(object sender, EventArgs e)
  {
    // 下面采用的是DataTable，也可以采用DataSet，其中每个DataTable可以保存成一个 Sheet
    // 迅雷下载时可以在下载完毕后会自动把文件名更新成 xls 或者 xml 的。
    System.Data.DataTable dt = new System.Data.DataTable();
    if (!Page.IsPostBack)
    {
      System.Data.DataRow dr;
      dt.Columns.Add(new System.Data.DataColumn("学生班级", typeof(System.String)));
      dt.Columns.Add(new System.Data.DataColumn("学生姓名", typeof(System.String)));
      dt.Columns.Add(new System.Data.DataColumn("语文", typeof(System.Decimal)));
      dt.Columns.Add(new System.Data.DataColumn("数学", typeof(System.Decimal)));
      dt.Columns.Add(new System.Data.DataColumn("英语", typeof(System.Decimal)));
      dt.Columns.Add(new System.Data.DataColumn("计算机", typeof(System.Decimal)));
      System.Random rd = new System.Random();
      for (int i = 0; i < 88; i++)
      {
        dr = dt.NewRow();
        dr[0] = "班级" + i.ToString();
        dr[1] = "【孟子E章】" + i.ToString();
        dr[2] = System.Math.Round(rd.NextDouble() * 100, 0);
        dr[3] = System.Math.Round(rd.NextDouble() * 100, 0);
        dr[4] = System.Math.Round(rd.NextDouble() * 100, 0);
        dr[5] = System.Math.Round(rd.NextDouble() * 100, 0);
        dt.Rows.Add(dr);
      }
    }

    //假如每10条数据放在一个 Sheet 里面，先计算需要多少个 Sheet
    int ItenCountPerSheet = 10;
    int SheetCount = Convert.ToInt32(Math.Ceiling((double)dt.Rows.Count / ItenCountPerSheet));
    Response.ClearContent();
    Response.BufferOutput = true;
    Response.Charset = "utf-8";
    Response.ContentType = "application/ms-excel";
    Response.AddHeader("Content-Transfer-Encoding", "binary");
    Response.ContentEncoding = System.Text.Encoding.UTF8;
    //Response.AppendHeader("Content-Disposition", "attachment;filename="+Server.UrlEncode("孟宪会Excel表格测试")+".xls");
    // 采用下面的格式，将兼容 Excel 2003,Excel 2007, Excel 2010。

    String FileName = "孟宪会Excel表格测试";
    if (!String.IsNullOrEmpty(Request.UserAgent))
    {
      // firefox 里面文件名无需编码。
      if (!(Request.UserAgent.IndexOf("Firefox") > -1 && Request.UserAgent.IndexOf("Gecko") > -1))
      {
        FileName = Server.UrlEncode(FileName);
      }
    }
    Response.AppendHeader("Content-Disposition", "attachment;filename=" + FileName + ".xml");
    Response.Write("<?xml version='1.0'?><?mso-application progid='Excel.Sheet'?>");
    Response.Write(@"<Workbook xmlns='urn:schemas-microsoft-com:office:spreadsheet'
      xmlns:o='urn:schemas-microsoft-com:office:office' xmlns:x='urn:schemas-microsoft-com:office:excel'
      xmlns:ss='urn:schemas-microsoft-com:office:spreadsheet' xmlns:html='http://www.w3.org/TR/REC-html40'>");
    Response.Write(@"<DocumentProperties xmlns='urn:schemas-microsoft-com:office:office'>");
    Response.Write(@"<Author>孟宪会</Author><LastAuthor>孟子E章</LastAuthor>
          <Created>2010-09-08T14:07:11Z</Created><Company>mxh</Company><Version>1990</Version>");
    Response.Write("</DocumentProperties>");
    Response.Write(@"<Styles><Style ss:ID='Default' ss:Name='Normal'><Alignment ss:Vertical='Center'/>
      <Borders/><Font ss:FontName='宋体' x:CharSet='134' ss:Size='12'/><Interior/><NumberFormat/><Protection/></Style>");
    //定义标题样式    
    Response.Write(@"<Style ss:ID='Header'><Borders><Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>
       <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>
       <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>
       <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/></Borders>
       <Font ss:FontName='宋体' x:CharSet='134' ss:Size='18' ss:Color='#FF0000' ss:Bold='1'/></Style>");

    //定义边框
    Response.Write(@"<Style ss:ID='border'><NumberFormat ss:Format='@'/><Borders>
      <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>
      <Border ss:Position='Left' ss:LineStyle='Continuous' ss:Weight='1'/>
      <Border ss:Position='Right' ss:LineStyle='Continuous' ss:Weight='1'/>
      <Border ss:Position='Top' ss:LineStyle='Continuous' ss:Weight='1'/></Borders></Style>");

    Response.Write("</Styles>");

    //SheetCount代表生成的 Sheet 数目。
    for (int i = 0; i < SheetCount; i++)
    {
      //计算该 Sheet 中的数据起始行和结束行。
      int start = ItenCountPerSheet * i;
      int end = ItenCountPerSheet * (i + 1);
      if (end > dt.Rows.Count) end = dt.Rows.Count;

      Response.Write("<Worksheet ss:Name='Sheet" + (i + 1) + "'>");
      Response.Write("<Table x:FullColumns='1' x:FullRows='1'>");

      //输出标题
      Response.Write("\r\n<Row ss:AutoFitHeight='1'>");
      for (int j = 0; j < dt.Columns.Count; j++)
      {
        Response.Write("<Cell ss:StyleID='Header'><Data ss:Type='String'>" + dt.Columns[j].ColumnName + "</Data></Cell>");
      }
      Response.Write("\r\n</Row>");
      

      for (int j = start; j < end; j++)
      {
        Response.Write("<Row>");
        for (int c = 0; c < 6; c++)
        {
          //对于数字，采用Number数字类型
          if (c > 1)
          {
            Response.Write("<Cell ss:StyleID='border'><Data ss:Type='Number'>" + dt.Rows[j][c].ToString() + "</Data></Cell>");
          }
          else
          {
            Response.Write("<Cell ss:StyleID='border'><Data ss:Type='String'>" + dt.Rows[j][c].ToString() + "</Data></Cell>");
          }
        }
        Response.Write("</Row>");
      }
      Response.Write("</Table>");
      Response.Write("</Worksheet>");
      Response.Flush();
    }
    Response.Write("</Workbook>");
    Response.End();
  }
</script>
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原文地址：https://www.cnblogs.com/aaa6818162/p/2248281.html