c#生成Excel，可建立sheet,设定sheet名称，调整列宽度

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 Microsoft.Office.Interop.Excel;
using System.Collections;
using System.Diagnostics;
/// <summary>
/// Summary description for ExcelRW
/// </summary>
public static class ExcelRW
{

public static void ExcelSave(Hashtable ht)
{
Application excel = new Application();//引用Excel对象
Workbooks oBooks;
Workbook oBook;
Sheets oSheets;
Worksheet oSheet;
Range oCells;
string sFile = ht["excelName"] as string;
//excel.Save("ddd.xls");
ArrayList alSheet = ht["sheetNameList"] as ArrayList;
Workbook wb = excel.Workbooks.Add(true);//引用Excel工作簿
excel.Visible = false;//使Excel可视
oBooks = excel.Workbooks;
oBook = oBooks.get_Item(1);
oSheets = oBook.Worksheets;
oSheet = (Worksheet)oSheets.get_Item(oSheets.Count);
foreach (Hashtable htOneSheel in alSheet)
{

oSheet = (Worksheet)oSheets.get_Item(oSheets.Count);
ArrayList ColNameList = htOneSheel["ColName"] as ArrayList;
//命名该sheet
oSheet.Name = htOneSheel["sheetName"] as string;
System.Data.DataTable dtable = htOneSheel["dataRows"] as System.Data.DataTable;
Range column = ((Range)oSheet.Cells[1, 1]).EntireColumn;
column.ColumnWidth = 10;
int iRow = 1;
foreach (DataRow dr in dtable.Rows)
{
int icel = 1;
for (int iCol = 0; iCol < ColNameList.Count; iCol++)
{
oSheet.Cells[iRow, icel++] = Convert.ToString(dr[ColNameList[iCol].ToString()]);

}
iRow++;
}
oSheets.Add(Type.Missing, oSheets[oSheets.Count], 1, Type.Missing);
//设定第一个sheet未活动sheet
//((Worksheet)oSheets.get_Item(1)).Activate();
oSheet = (Worksheet)oSheets.get_Item(1);
}
string strFilePathAndname = HttpContext.Current.Server.MapPath(".") + "/Excel/" + sFile;
if (System.IO.File.Exists(strFilePathAndname))
{
System.IO.File.Delete(strFilePathAndname);
}
//excel.Workbooks.get_Item(1).Worksheets.Select(excel.Workbooks.get_Item(1).Worksheets[1]);
oSheet.SaveAs(strFilePathAndname, Microsoft.Office.Interop.Excel.XlFileFormat.xlTemplate, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Type.Missing, Type.Missing, Type.Missing);
oBook.Close(false, Type.Missing, Type.Missing);
//退出Excel，并且释放调用的COM资源
excel.Quit();
GC.Collect();
//excel.Save("ddd.xls");
KillProcess("Excel");
}

public static void Out2Excel(string sTableName, string url)
{
Microsoft.Office.Interop.Excel.Application oExcel = new Microsoft.Office.Interop.Excel.Application();
Workbooks oBooks;
Workbook oBook;
Sheets oSheets;
Worksheet oSheet;
Range oCells;
string sFile = "", sTemplate = "";
//
System.Data.DataTable dt = null;// TableOut(sTableName).Tables[0];
sFile = url + "myExcel.xls";
sTemplate = url + "MyTemplate.xls";
//
oExcel.Visible = false;
oExcel.DisplayAlerts = false;
//定义一个新的工作簿
oBooks = oExcel.Workbooks;
oBooks.Open(sTemplate, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
oBook = oBooks.get_Item(1);
oSheets = oBook.Worksheets;
oSheet = (Worksheet)oSheets.get_Item(1);
//命名该sheet
oSheet.Name = "Sheet1";
//(Worksheet)oSheets.Add(Type.Missing, Type.Missing, Type.Missing, Type.Missing);
oCells = oSheet.Cells;
//调用dumpdata过程，将数据导入到Excel中去
//DumpData(dt, oCells);
//保存
oSheet.SaveAs(sFile, Microsoft.Office.Interop.Excel.XlFileFormat.xlTemplate, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Type.Missing, Type.Missing, Type.Missing);
oBook.Close(false, Type.Missing, Type.Missing);
//退出Excel，并且释放调用的COM资源
oExcel.Quit();
GC.Collect();
KillProcess("Excel");
}
private static void KillProcess(string processName)
{
System.Diagnostics.Process myproc = new System.Diagnostics.Process();
//得到所有打开的进程
try
{
foreach (Process thisproc in Process.GetProcessesByName(processName))
{
if (!thisproc.CloseMainWindow())
{
thisproc.Kill();
}
}
}
catch (Exception Exc)
{
throw new Exception("", Exc);
}
}
}

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="testExcelDown.aspx.cs" Inherits="testExcelDown" %>
<!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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="bnt_test" runat="server" OnClick="bnt_test_Click" Text="测试下载" /></div>
</form>
</body>
</html>

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;
public partial class testExcelDown : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void bnt_test_Click(object sender, EventArgs e)
{
DataSearch();
}

/// <summary>
/// 生成excel数据准备
/// </summary>
private void DataSearch()
{
ArrayList arColName = new ArrayList();
ArrayList alData = new ArrayList();

arColName.Add("title");
arColName.Add("url");
DataTable dtSheet1 = new DataTable();
dtSheet1.Columns.Add(new DataColumn("title"));
dtSheet1.Columns.Add(new DataColumn("url"));
//sheet1数据准备

DataRow dr =   dtSheet1.NewRow();
dr["title"] = "百度" ;
dr["url"] = "http://www.baidu.com";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "400电话";
dr["url"] = "http://www.my400800.cn";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "goole";
dr["url"] = "http://www.google.cn";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "sina";
dr["url"] = "http://www.sina.com.cn";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "tel4006";
dr["url"] = "http://www.tel4006.com";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "soso";
dr["url"] = "http://www.soso.com";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "gougou";
dr["url"] = "http://www.gougou.com";
dtSheet1.Rows.Add(dr);
Hashtable htOneType = new Hashtable();
htOneType["dataRows"] = dtSheet1;
htOneType["ColName"] = arColName;
htOneType["sheetName"] = "网站实用大全1";
alData.Add(htOneType);
//sheet2数据准备
dr = dtSheet1.NewRow();
dr["title"] = "百度MP3";
dr["url"] = "http://MP3.baidu.com";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "400电话搜索";
dr["url"] = "http://blog.my400800.cn";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "goole地图";
dr["url"] = "http://map.google.cn";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "sina Blog";
dr["url"] = "http://blog.sina.com.cn";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "tel4006 搜索";
dr["url"] = "http://www.tel4006.com/400";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "soso";
dr["url"] = "http://www.soso.com";
dtSheet1.Rows.Add(dr);
dr = dtSheet1.NewRow();
dr["title"] = "gougou";
dr["url"] = "http://www.gougou.com";
dtSheet1.Rows.Add(dr);
htOneType = new Hashtable();
htOneType["dataRows"] = dtSheet1;
htOneType["ColName"] = arColName;
htOneType["sheetName"] = "网站实用大全2";
alData.Add(htOneType);

Hashtable htAllData = new Hashtable();
htAllData["sheetNameList"] = alData;

htAllData["excelName"] =  "网站实用大全.xls";
ExcelRW.ExcelSave(htAllData);
Response.Redirect("Excel/" + htAllData["excelName"] as string);
}
}