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asp.net生成Excel并导出下载五种实现方法

　　本文标签：生成Excel,导出Excel

方法一 通过GridView(简评：方法比较简单，但是只适合生成格式简单的Excel，且无法保留VBA代码),页面无刷新

aspx.cs部分

复制代码 代码如下:

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Text;

public partial class DataPage_NationDataShow : System.Web.UI.Page
{
private Data_Link link = new Data_Link();
private string sql;

protected void Page_Load(object sender, EventArgs e)
{
Ajax.Utility.RegisterTypeForAjax(typeof(DataPage_NationDataShow));
}

protected void btnExcel_Click(object sender, EventArgs e)
{
string strExcelName = "MyExcel";
strExcelName = strExcelName.Replace(@"/", "");

Data_Link link = new Data_Link();
string strSQL = this.hidParam.Value;
DataSet ds = new DataSet();
ds = link.D_DataSet_Return(strSQL);//获得想要放入Excel的数据

gvExcel.Visible = true;
gvExcel.DataSource = null;
gvExcel.DataMember = ds.Tables[0].TableName;
gvExcel.DataSource = ds.Tables[0];
gvExcel.DataBind();

ExportToExcel(this.Page, gvExcel, strExcelName);
}

protected void gvExcel_RowDataBound(object sender, GridViewRowEventArgs e)
{ }
public override void VerifyRenderingInServerForm(Control control)
{ }

/// <summary>
/// 工具方法，Excel出力(解决乱码问题)
/// </summary>
/// <param name="page">调用页面</param>
/// <param name="excel">Excel数据</param>
/// <param name="fileName">文件名</param>
public void ExportToExcel(System.Web.UI.Page page, GridView excel, string fileName)
{
try
{
foreach (GridViewRow row in excel.Rows)
{
for (int i = 0; i < row.Cells.Count; i++)
{
excel.HeaderRow.Cells[i].BackColor = System.Drawing.Color.Yellow;
}
}
excel.Font.Size = 10;
excel.AlternatingRowStyle.BackColor = System.Drawing.Color.LightCyan;
excel.RowStyle.Height = 25;

page.Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);
page.Response.Charset = "utf-8";
page.Response.ContentType = "application/vnd.ms-excel";
page.Response.Write("<meta http-equiv=Content-Type content=text/html;charset=utf-8>");
excel.Page.EnableViewState = false;
excel.Visible = true;
excel.HeaderStyle.Reset();
excel.AlternatingRowStyle.Reset();

System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
excel.RenderControl(oHtmlTextWriter);
page.Response.Write(oStringWriter.ToString());
page.Response.End();

excel.DataSource = null;
excel.Visible = false;
}
catch (Exception e)
{

}
}
}

aspx部分
复制代码 代码如下:

<head runat="server">
<script type="text/javascript">
//Excel DownLoad
function excelExport(){
var hidText = document.getElementById("hidParam");
hidText.value = "some params";
document.getElementById("ExcelOutput").click();
}
</script>
</head>
<body onload="pageInit()">
<form id="form1" runat="server">
<input type="button" value="EXCEL下载" style="width:100px;" onclick="excelExport()" id="excelBut" />
<input id="hidParam" type="text" runat="server" style="display:none;"/>
<asp:Button runat="server" ID="ExcelOutput" style="display:none" Text= "EXCEL出力" Width="0px" onclick="btnExcel_Click" UseSubmitBehavior="false"/>
<asp:GridView ID="gvExcel" runat="server" Height="95px" OnRowDataBound="gvExcel_RowDataBound" Visible="False"></asp:GridView>
</form>
</body>

在刚才的aspx.cs代码中
复制代码 代码如下:

foreach (GridViewRow row in excel.Rows)
{
for (int i = 0; i < row.Cells.Count; i++)
{
excel.HeaderRow.Cells[i].BackColor = System.Drawing.Color.Yellow;
}
}

这部分是给表头添加样式 。

有时候为了便于浏览，需要给交叉行添加样式，简单点的可以用下面这种：

复制代码 代码如下:

excel.AlternatingRowStyle.BackColor = System.Drawing.Color.LightCyan;

但是细看一下会发现它把一整行的样式都改变了，包括后面那些没有用到的列 。

解决办法是有，不过比较繁琐，就是修改每个单元格的样式 。

复制代码 代码如下:

int rowCount = excel.Rows.Count;
int colCount = excel.HeaderRow.Cells.Count;

for (int i = 0; i < rowCount; i++)
{
for(int j=0;j<colCount; j++)
{
excel.Rows[i].Cells[j].BackColor = System.Drawing.Color.LightCyan;
}
}

方法二 通过DataGrid(与方法一基本相同),页面无刷新

aspx.cs部分

复制代码 代码如下:

public override void VerifyRenderingInServerForm(Control control)
{}

/// <summary>
/// エクセル出力イベント
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ExcelBut_Click(object sender, System.EventArgs e)
{
DataGrid dgExcel = new DataGrid();

try
{
DataSet ds = getExcelData(this.PageParams.Value);//出力データを取得する

if(ds.Tables[0].Rows.Count>0)
{
//エクセルへデータを投入する
string execlName= "MyExcel";
Encoding encodingType=System.Text.Encoding.UTF8;
dgExcel.DataMember=ds.Tables[0].TableName;
dgExcel.DataSource=ds.Tables[0];

Response.Buffer = true;
Response.Charset = "utf-8";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + execlName+ ".xls");
Response.ContentEncoding = encodingType;
Response.ContentType = "application/ms-excel";
StringWriter oStringWriter = new StringWriter();
HtmlTextWriter oHtmlTextWriter = new HtmlTextWriter(oStringWriter);
dgExcel.DataBind();
dgExcel.Visible = true;
dgExcel.RenderControl(oHtmlTextWriter);
Response.Write(oStringWriter.ToString());
Response.Flush();
Response.Close();
dgExcel.DataSource = null;
dgExcel.Visible = false;
}
else
{
Response.Write("<script>alert(xxxxxx)</script>");
}
}
catch(Exception ex)
{
Response.Write("<script>alert(oooooo)</script>");
}
}

aspx部分
复制代码 代码如下:

<head runat="server">
<script type="text/javascript">
//Excel DownLoad
function excelExport(){
var hidText = document.getElementById("hidParam");
hidText.value = "some params";
document.getElementById("ExcelOutput").click();
}
</script>
</head>
<body onload="pageInit()">
<form id="form1" runat="server">
<input type="button" value="EXCEL下载" style="width:100px;" onclick="excelExport()" id="excelBut" NAME="excelBut"/>
<input id="hidParam" type="text" runat="server" style="display:none;" NAME="hidParam"/>
<asp:Button runat="server" ID="ExcelOutput" style="display:none" Text= "EXCEL出力" Width="0px" onclick="btnExcel_Click" UseSubmitBehavior="false"/>
<asp:datagrid id="gvExcel" Visible="False" Runat="server" style="Z-INDEX: 107; POSITION: absolute; TOP: 72px; LEFT: 520px"
Width="80px" Height="40px"></asp:datagrid>
</form>
</body>

方法三 以XML形式的Excel方式(可以设置丰富的样式，并可以有多个sheet，但需要模版 。速度很快，但生成的文件较大，且无法保留VBA代码)

具体方法：把模版以 XML Document形式另存为A.xml 。然后参照A.xml中的内容即可

复制代码 代码如下:
 
private void ExcelBut_Click(object sender, System.EventArgs e)
{
DataSet ds = new DataSet();
string ExcelFileName = "";
DataRow dr=[------列名信息-------];
try
{
ExcelFileName = Path.Combine(Request.PhysicalApplicationPath + "/ExcelFile", "MyExcel.xls");

//获取Excel需要的数据
ds = [------获得数据-------];
if (ds.Tables.Count == 0)
{
Response.Write("<script type=text/javascript>alert(无数据);</script>");
return;
}
int sheetNum = ds.Tables.Count / 2;
StreamWriter writer = new StreamWriter(ExcelFileName, false);

//Styles标签前面的信息相当于头信息，不需要改变
writer.WriteLine("<?xml version=\"1.0\"?>");
writer.WriteLine("<?mso-application progid=\"Excel.Sheet\"?>");
writer.WriteLine("<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"");
writer.WriteLine("xmlns:o=\"urn:schemas-microsoft-com:office:office\"");
writer.WriteLine("xmlns:x=\"urn:schemas-microsoft-com:office:excel\"");
writer.WriteLine("xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\"");
writer.WriteLine("xmlns:html=\"http://www.w3.org/TR/REC-html40\">");
writer.WriteLine("<DocumentProperties xmlns=\"urn:schemas-microsoft-com:office:office\">");
writer.WriteLine("<LastAuthor>Automated Report Generator Example</LastAuthor>");
writer.WriteLine(string.Format("<Created>{0}T{1}Z</Created>", DateTime.Now.ToString("yyyy-mm-dd"), DateTime.Now.ToString("HH:MM:SS")));
writer.WriteLine(" <Company>51aspx.com</Company>");
writer.WriteLine(" <Version>11.6408</Version>");
writer.WriteLine("</DocumentProperties>");
writer.WriteLine("<ExcelWorkbook xmlns=\"urn:schemas-microsoft-com:office:excel\">");
writer.WriteLine("<WindowHeight>6195</WindowHeight>");
writer.WriteLine(" <WindowWidth>18495</WindowWidth>");
writer.WriteLine(" <WindowTopX>525</WindowTopX>");
writer.WriteLine(" <WindowTopY>4260</WindowTopY>");
writer.WriteLine(" <AcceptLabelsInFormulas/>");
writer.WriteLine(" <ProtectStructure>True</ProtectStructure>");
writer.WriteLine(" <ProtectWindows>False</ProtectWindows>");
writer.WriteLine("</ExcelWorkbook>");

//通过 ss:ID 和 ss:Name相当于html中style的类
writer.WriteLine(" <Styles> ");
writer.WriteLine(" <Style ss:ID=Default ss:Name=Normal> ");
writer.WriteLine(" <Alignment ss:Vertical=Bottom/> ");
writer.WriteLine(" <Borders/> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior/> ");
writer.WriteLine(" <NumberFormat/> ");
writer.WriteLine(" <Protection/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s23> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11 ");
writer.WriteLine(" ss:Color=#FF0000/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s24> ");
writer.WriteLine(" <Interior/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s25> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s26> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11 ");
writer.WriteLine(" ss:Color=#FF0000/> ");
writer.WriteLine(" <Interior/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s27> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Left ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Right ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior ss:Color=#CCFFFF ss:Pattern=Solid/> ");
writer.WriteLine(" <Protection/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s28> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Left ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Right ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior ss:Color=#CCFFFF ss:Pattern=Solid/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s29> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Left ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior ss:Color=#CCFFFF ss:Pattern=Solid/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s30> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior ss:Color=#CCFFFF ss:Pattern=Solid/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s31> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Right ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior ss:Color=#CCFFFF ss:Pattern=Solid/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s32> ");
writer.WriteLine(" <Alignment ss:Vertical=Bottom ss:WrapText=1/> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Left ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Right ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior ss:Color=#CCFFFF ss:Pattern=Solid/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s33> ");
writer.WriteLine(" <Alignment ss:Vertical=Bottom ss:WrapText=1/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s34> ");
writer.WriteLine(" <Alignment ss:Vertical=Bottom ss:WrapText=1/> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Left ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Right ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s35> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Left ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Right ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s36> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Left ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Right ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior ss:Color=#FFFF99 ss:Pattern=Solid/> ");
writer.WriteLine(" <Protection ss:Protected=0/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s37> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Left ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Right ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s38> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Left ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Right ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" <Style ss:ID=s39> ");
writer.WriteLine(" <Borders> ");
writer.WriteLine(" <Border ss:Position=Bottom ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Left ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Right ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" <Border ss:Position=Top ss:LineStyle=Continuous ss:Weight=1/> ");
writer.WriteLine(" </Borders> ");
writer.WriteLine(" <Font ss:FontName=ＭＳ Ｐゴシック x:CharSet=128 x:Family=Modern ss:Size=11/> ");
writer.WriteLine(" <Interior/> ");
writer.WriteLine(" </Style> ");
writer.WriteLine(" </Styles> ");

//Sheet操作
writer.WriteLine("<Worksheet ss:Name=" + dr["Msg030"] + ">");
writer.WriteLine(" <Table ss:ExpandedColumnCount=9 ss:ExpandedRowCount=3000 x:FullColumns=1 x:FullRows=1 ss:StyleID=s33 ss:DefaultColumnWidth=54 ss:DefaultRowHeight=13.5>");
writer.WriteLine("<Column ss:StyleID=s34 ss:AutoFitWidth=0 ss:Width=110.25/>");
writer.WriteLine("<Column ss:StyleID=s34 ss:AutoFitWidth=0 ss:Width=33.75/>");
writer.WriteLine("<Column ss:StyleID=s34 ss:AutoFitWidth=0 ss:Width=118.5/>");
writer.WriteLine("<Column ss:StyleID=s34 ss:AutoFitWidth=0 ss:Width=159.75/>");
writer.WriteLine("<Column ss:StyleID=s34 ss:AutoFitWidth=0 ss:Width=147.75 ss:Span=4/>");

for (int num = sheetNum - 1; num >= 0; num = num - 1)
{
// 考課表間有3行的空行
if (num != sheetNum - 1)
{
writer.WriteLine("<Row>");
writer.WriteLine("</Row>");
writer.WriteLine("<Row>");
writer.WriteLine("</Row>");
writer.WriteLine("<Row>");
writer.WriteLine("</Row>");
}

// 列名
writer.WriteLine("<Row ss:Height=40.5>");
writer.WriteLine("<Cell ss:StyleID=s32><Data ss:Type=String>" + dr["Msg002"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s32><Data ss:Type=String>" + dr["Msg003"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s32><Data ss:Type=String>" + dr["Msg004"] + "</Data></Cell>");
writer.WriteLine("</Row>");

// 详细数据
for (int i = 0; i < ds.Tables[2 * num].Rows.Count; i++)
{
writer.WriteLine("<Row ss:Height=27>");
writer.WriteLine("<Cell><Data ss:Type=String>" + ds.Tables[2 * num].Rows[i]["EvalLevel1Name"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell><Data ss:Type=Number>" + ds.Tables[2 * num].Rows[i]["EvalLevel2Code"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell><Data ss:Type=String>" + ds.Tables[2 * num].Rows[i]["EvalLevel2Name"].ToString() + "</Data></Cell>");
writer.WriteLine("</Row>");
}
}
writer.WriteLine(" </Table>");
writer.WriteLine(" </Worksheet>");

// 其他Sheet操作
for (int num = sheetNum - 1; num >= 0; num--)
{
writer.WriteLine("<Worksheet ss:Name=" + ds.Tables[2 * num].Rows[0][1].ToString() + " ss:Protected=1>");
writer.WriteLine(" <Table ss:ExpandedColumnCount=31 ss:ExpandedRowCount=30000 x:FullColumns=1 x:FullRows=1 ss:StyleID=s25 ss:DefaultColumnWidth=54 ss:DefaultRowHeight=13.5>");
writer.WriteLine(" <Row>");
writer.WriteLine("<Cell ss:StyleID=s26><PhoneticText xmlns=urn:schemas-microsoft-com:office:excel>カキキイロテンスウツ</PhoneticText><Data ss:Type=String>" + dr["Msg031"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:Index=14 ss:StyleID=Default/>");
writer.WriteLine("<Cell ss:StyleID=Default/>");
writer.WriteLine("<Cell ss:StyleID=Default/>");
writer.WriteLine("<Cell ss:StyleID=Default/>");
writer.WriteLine("<Cell ss:StyleID=Default/>");
writer.WriteLine("<Cell ss:StyleID=Default/>");
writer.WriteLine("<Cell ss:StyleID=Default/>");
writer.WriteLine("<Cell ss:StyleID=Default/>");
writer.WriteLine("<Cell ss:StyleID=Default/>");
writer.WriteLine("</Row>");
writer.WriteLine(" <Row>");
writer.WriteLine("<Cell ss:StyleID=s26><PhoneticText xmlns=urn:schemas-microsoft-com:office:excel>カキキイロテンスウツ</PhoneticText><Data ss:Type=String>" + dr["Msg032"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:Index=14 ss:StyleID=Default/>");
writer.WriteLine("<Cell ss:StyleID=Default/>");
writer.WriteLine("<Cell ss:StyleID=Default/>");

writer.WriteLine("</Row>");

// 列名
writer.WriteLine("<Row>");
writer.WriteLine("<Cell ss:StyleID=s27><Data ss:Type=String>" + dr["Msg001"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s28><Data ss:Type=String>" + dr["Msg002"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s28><Data ss:Type=String>" + dr["Msg003"] + "</Data></Cell>");
writer.WriteLine("</Row>");
int SheetN = ds.Tables[2 * num].Rows.Count;

//详细数据
for (int i = 0; i < SheetN; i++)
{
writer.WriteLine("<Row>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=Number>" + ds.Tables[2 * num].Rows[i]["EvalLevel1Code"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String>" + ds.Tables[2 * num].Rows[i]["EvalLevel1Name"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=Number>" + ds.Tables[2 * num].Rows[i]["EvalLevel2Code"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell><Data ss:Type=String> </Data></Cell>");
writer.WriteLine("</Row>");
}
writer.WriteLine("<Row>");
writer.WriteLine("</Row>");
writer.WriteLine("<Row>");
writer.WriteLine("</Row>");

//列名
writer.WriteLine("<Row>");
writer.WriteLine("<Cell ss:StyleID=s29><Data ss:Type=String>" + dr["Msg011"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s30/>");
writer.WriteLine("<Cell ss:StyleID=s31/>");
writer.WriteLine("<Cell ss:StyleID=s29><Data ss:Type=String>" + dr["Msg012"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s31/>");
writer.WriteLine("<Cell ss:StyleID=s29><Data ss:Type=String>" + dr["Msg013"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s30/>");
writer.WriteLine("<Cell ss:StyleID=s30/>");
writer.WriteLine("<Cell ss:StyleID=s30/>");
writer.WriteLine("<Cell ss:StyleID=s31/>");
writer.WriteLine("<Cell ss:StyleID=s29><Data ss:Type=String>" + dr["Msg014"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s31/>");
writer.WriteLine("<Cell ss:StyleID=s29><Data ss:Type=String>" + dr["Msg015"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s31/>");
writer.WriteLine("</Row>");
writer.WriteLine("<Row>");
writer.WriteLine("<Cell ss:StyleID=s28><Data ss:Type=String>" + dr["Msg016"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s28><Data ss:Type=String>" + dr["Msg017"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s28><Data ss:Type=String>" + dr["Msg018"] + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s28><Data ss:Type=String>" + dr["Msg019"] + "</Data></Cell>");

writer.WriteLine("</Row>");
int DateLen = ds.Tables[2 * num + 1].Rows.Count;
string EmployeeManagement = "";

for (int i = 0; i < DateLen; i++)
{
writer.WriteLine("<Row>");
writer.WriteLine("<Cell ss:StyleID=s37><Data ss:Type=Number>" + ds.Tables[2 * num + 1].Rows[i]["EmployeeManagementID"].ToString() + "</Data></Cell>");
if (!EmployeeManagement.Equals(ds.Tables[2 * num + 1].Rows[i]["EmployeeManagementID"].ToString()))
{
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=Number>" + ds.Tables[2 * num + 1].Rows[i]["EmployeeCode"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String>" + ds.Tables[2 * num + 1].Rows[i]["EmployeeName"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String>" + ds.Tables[2 * num + 1].Rows[i]["BefEmployeeName2"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String>" + ds.Tables[2 * num + 1].Rows[i]["EmployeeName2"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s38><Data ss:Type=Number>" + ds.Tables[2 * num + 1].Rows[i]["EvalLevel1Code"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String>" + ds.Tables[2 * num + 1].Rows[i]["EvalLevel1Name"].ToString() + "</Data></Cell>");
EmployeeManagement = ds.Tables[2 * num + 1].Rows[i]["EmployeeManagementID"].ToString();
}
else
{
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String></Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String></Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String></Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String></Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s38><Data ss:Type=String></Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String></Data></Cell>");
}
writer.WriteLine("<Cell ss:StyleID=s39><Data ss:Type=Number>" + ds.Tables[2 * num + 1].Rows[i]["EvalLevel2Code"].ToString() + "</Data></Cell>");
writer.WriteLine("<Cell ss:StyleID=s35><Data ss:Type=String>" + ds.Tables[2 * num + 1].Rows[i]["EvalLevel2Name"].ToString() + "</Data></Cell>");
writer.WriteLine("</Row>");
}
writer.WriteLine(" </Table>");
writer.WriteLine(" </Worksheet>");
}

writer.WriteLine("</Workbook>");
writer.Close();

FileDownload(ExcelFileName);
}
catch (System.Exception ex)
{

}
finally
{
Response.End();
}
}
public void FileDownload(FullFileName)
{
FileInfo DownloadFile = new FileInfo(FullFileName);
Response.Clear();
Response.ClearHeaders();
Response.Buffer = true;
Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(System.Text.Encoding.UTF8.GetBytes(MyFile".xls")));
Response.ContentType = "application/ms-excel;charset=UTF-8";//DownloadFile.FullNameoctet-stream
Response.ContentEncoding = System.Text.Encoding.GetEncoding("shift-jis");
Response.AppendHeader("Content-Length", DownloadFile.Length.ToString());
Response.WriteFile(FullFileName);
Response.Flush();

if (File.Exists(FullFileName))
{
File.Delete(FullFileName);
}
}

方法四 用微软的COM组件操作Excel 。虽然可以很方便的操作单元格，并且能保留VBA代码，它相当于直接打开一个EXCEL进程 。

当初这个COM组件式给WinForm准备的，但在Web端有很多东西的支持不尽人意，例如无法用组件中的方法关闭Excel对象，

只能通过强制关闭Excel进程的方式(这其中还有很多问题，例如只能关闭当前打开的这个Excel的进程，否则会把其他用户的Excel进程关闭) 。在这里不推荐

方法五 用流的方式，把内容以Table的格式向Excel中放数据 好处是 可以生成格式丰富复杂的Excel，页面无刷新

aspx部分

复制代码 代码如下:

<asp:Button ID="hidExport" onClick="hidExport_Click()" Runat="server"></asp:Button>

aspx.cs部分
复制代码 代码如下:

//内容很好理解，只需当成Table来拼字符串即可
private string getExcelContent()
{
StringBuilder sb = new StringBuilder();

sb.Append("<table borderColor=black border=1 >");
sb.Append("<thead><tr><th colSpan=2 bgColor=#ccfefe>标题</th></tr>");
sb.Append("<tr><th bgColor=#ccfefe>号码</th><th bgColor=#ccfefe>名字</th></tr></thead>");
sb.Append("<tbody>");
sb.Append("<tr class=firstTR><td bgcolor=#FF99CC></td><td></td></tr>");
sb.Append("<tr class=secondTR><td></td><td bgcolor=lightskyblue></td></tr>");
sb.Append("</tbody></table>");
return sb.ToString();
}

private void hidExport_Click(object sender, System.EventArgs e)
{
string content = getExcelContent();
string css = ".firstTR td{color:blue;width:100px;}.secondTR td{color:blue;width:100px;}";
string filename = "Test.xls";

CommonTool.ExportToExcel(filename, content ,css);
}

工具类CommonTool
复制代码 代码如下:

public class CommonTool
{
/// <summary>
/// 以流的形式，可以设置很丰富复杂的样式
/// </summary>
/// <param name="content">Excel中内容(Table格式)</param>
/// <param name="filename">文件名</param>
/// <param name="cssText">样式内容</param>
public static void ExportToExcel(string filename, string content,string cssText)
{
var res = HttpContext.Current.Response;
content = String.Format("<style type=text/css>{0}</style>{1}",cssText,content);

res.Clear();
res.Buffer = true;
res.Charset = "UTF-8";
res.AddHeader("Content-Disposition", "attachment; filename=" + filename);
res.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
res.ContentType = "application/ms-excel;charset=UTF-8";
res.Write(content);
res.Flush();
res.End();
}
}

这种方法比较灵活，而且可以通过选择器来添加样式，相当不错 。缺点就是需要将数据转换成字符串 。