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

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。

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