根据服务器上的Excel模版导出Excel

命名空间：

Using

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.Office.Tools.Excel;
using Microsoft.Office.Interop.Excel;
using System.Text;
using System.IO;
using System.Xml;
using System.Globalization;
using System.Data;
using System.Collections;
using System.Collections.Specialized;
using System.Data.Common;
using System.Data.SqlClient;
using Microsoft.Practices.EnterpriseLibrary.Logging;
using System.Data.OleDb;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Net.Mime;
using System.Reflection;
using System.Diagnostics;
using Microsoft.Win32;
using System.Runtime.InteropServices;

class ExcelOperate:

 /// <summary>
    /// ExcelOperate 的摘要说明。Excel操作函数
    /// </summary>
    class ExcelOperate
    {
        private object mValue = System.Reflection.Missing.Value;
        public ExcelOperate()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }

        /// <summary>
        /// 合并单元格
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        public void Merge(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell)
        {
            CurSheet.get_Range(objStartCell, objEndCell).Merge(mValue);
        }
        /// <summary>
        /// 设置连续区域的字体大小
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="strStartCell">开始单元格</param>
        /// <param name="strEndCell">结束单元格</param>
        /// <param name="intFontSize">字体大小</param>
        public void SetFontSize(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell, int intFontSize)
        {
            CurSheet.get_Range(objStartCell, objEndCell).Font.Size = intFontSize.ToString();
        }

        /// <summary>
        /// 横向打印
        /// </summary>
        /// <param name="CurSheet"></param>
        public void xlLandscape(Microsoft.Office.Interop.Excel._Worksheet CurSheet)
        {
            CurSheet.PageSetup.Orientation = Microsoft.Office.Interop.Excel.XlPageOrientation.xlLandscape;

        }
        /// <summary>
        /// 纵向打印
        /// </summary>
        /// <param name="CurSheet"></param>
        public void xlPortrait(Microsoft.Office.Interop.Excel._Worksheet CurSheet)
        {
            CurSheet.PageSetup.Orientation = Microsoft.Office.Interop.Excel.XlPageOrientation.xlPortrait;
        }
        /// <summary>
        /// 在指定单元格插入指定的值
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="Cell">单元格 如Cells[1,1]</param>
        /// <param name="objValue">文本、数字等值</param>
        public void WriteCell(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objCell, object objValue)
        {
            CurSheet.get_Range(objCell, mValue).Value2 = objValue;

        }

        /// <summary>
        /// 在指定Range中插入指定的值
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="StartCell">开始单元格</param>
        /// <param name="EndCell">结束单元格</param>
        /// <param name="objValue">文本、数字等值</param>
        public void WriteRange(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell, object objValue)
        {
            CurSheet.get_Range(objStartCell, objEndCell).Value2 = objValue;
        }

        /// <summary>
        /// 合并单元格，并在合并后的单元格中插入指定的值
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        /// <param name="objValue">文本、数字等值</param>
        public void WriteAfterMerge(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell, object objValue)
        {
            CurSheet.get_Range(objStartCell, objEndCell).Merge(mValue);
            CurSheet.get_Range(objStartCell, mValue).Value2 = objValue;

        }

        /// <summary>
        /// 为单元格设置公式
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objCell">单元格</param>
        /// <param name="strFormula">公式</param>
        public void SetFormula(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objCell, string strFormula)
        {
            CurSheet.get_Range(objCell, mValue).Formula = strFormula;
        }


        /// <summary>
        /// 单元格自动换行
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        public void AutoWrapText(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell)
        {
            CurSheet.get_Range(objStartCell, objEndCell).WrapText = true;
        }

        /// <summary>
        /// 设置整个连续区域的字体颜色
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        /// <param name="clrColor">颜色</param>
        //public void SetColor(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell, System.Drawing.Color clrColor)
        //{
        //    CurSheet.get_Range(objStartCell, objEndCell).Font.Color = System.Drawing.ColorTranslator.ToOle(clrColor);
        //}

        /// <summary>
        /// 设置整个连续区域的单元格背景色
        /// </summary>
        /// <param name="CurSheet"></param>
        /// <param name="objStartCell"></param>
        /// <param name="objEndCell"></param>
        /// <param name="clrColor"></param>
        //public void SetBgColor(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell, System.Drawing.Color clrColor)
        //{
        //    CurSheet.get_Range(objStartCell, objEndCell).Interior.Color = System.Drawing.ColorTranslator.ToOle(clrColor);
        //}

        /// <summary>
        /// 设置连续区域的字体名称
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        /// <param name="fontname">字体名称 隶书、仿宋_GB2312等</param>
        public void SetFontName(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell, string fontname)
        {
            CurSheet.get_Range(objStartCell, objEndCell).Font.Name = fontname;
        }

        /// <summary>
        /// 设置连续区域的字体为黑体
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        public void SetBold(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell)
        {
            //CurSheet.get_Range(objStartCell, objEndCell).Font.Bold = true;
            CurSheet.get_Range(objStartCell, objEndCell).Font.Size = 12;
        }


        /// <summary>
        /// 设置连续区域的边框：上下左右都为黑色连续边框
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        /*
        public void SetBorderAll(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell)
        {
            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeTop].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);
            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeTop].LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;

            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeBottom].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);
            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeBottom].LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;

            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeLeft].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);
            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeLeft].LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;

            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeRight].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);
            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlEdgeRight].LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;

            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideHorizontal].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);
            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideHorizontal].LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;

            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideVertical].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);
            CurSheet.get_Range(objStartCell, objEndCell).Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideVertical].LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;

        }
        */

        /// <summary>
        /// 设置连续区域水平居中
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        public void SetHAlignCenter(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell)
        {
            CurSheet.get_Range(objStartCell, objEndCell).HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
        }

        /// <summary>
        /// 设置连续区域水平居左
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        public void SetHAlignLeft(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell)
        {
            CurSheet.get_Range(objStartCell, objEndCell).HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignLeft;
        }

        /// <summary>
        /// 设置连续区域水平居右
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        public void SetHAlignRight(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell)
        {
            CurSheet.get_Range(objStartCell, objEndCell).HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignRight;
        }


        /// <summary>
        /// 设置连续区域的显示格式
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        /// <param name="strNF">如"#,##0.00"的显示格式</param>
        public void SetNumberFormat(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell, string strNF)
        {
            CurSheet.get_Range(objStartCell, objEndCell).NumberFormat = strNF;

        }
        public void border(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object aa, object bb)
        {
            CurSheet.get_Range(aa, bb).Borders.LineStyle = 1;
        }

        /// <summary>
        /// 设置列宽
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="strColID">列标识，如A代表第一列</param>
        /// <param name="dblWidth">宽度</param>
        public void SetColumnWidth(Microsoft.Office.Interop.Excel._Worksheet CurSheet, string strColID, double dblWidth)
        {
            ((Microsoft.Office.Interop.Excel.Range)CurSheet.Columns.GetType().InvokeMember("Item", System.Reflection.BindingFlags.GetProperty, null, CurSheet.Columns, new object[] { (strColID + ":" + strColID).ToString() })).ColumnWidth = dblWidth;
        }

        /// <summary>
        /// 设置列宽
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        /// <param name="dblWidth">宽度</param>
        public void SetColumnWidth(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell, double dblWidth)
        {
            CurSheet.get_Range(objStartCell, objEndCell).ColumnWidth = dblWidth;
        }


        /// <summary>
        /// 设置行高
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objStartCell">开始单元格</param>
        /// <param name="objEndCell">结束单元格</param>
        /// <param name="dblHeight">行高</param>
        public void SetRowHeight(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objStartCell, object objEndCell, double dblHeight)
        {
            CurSheet.get_Range(objStartCell, objEndCell).RowHeight = dblHeight;

        }


        /// <summary>
        /// 为单元格添加超级链接
        /// </summary>
        /// <param name="CurSheet">Worksheet</param>
        /// <param name="objCell">单元格</param>
        /// <param name="strAddress">链接地址</param>
        /// <param name="strTip">屏幕提示</param>
        /// <param name="strText">链接文本</param>
        public void AddHyperLink(Microsoft.Office.Interop.Excel._Worksheet CurSheet, object objCell, string strAddress, string strTip, string strText)
        {
            CurSheet.Hyperlinks.Add(CurSheet.get_Range(objCell, objCell), strAddress, mValue, strTip, strText);
        }

        /// <summary>
        /// 另存为xls文件
        /// </summary>
        /// <param name="CurBook">Workbook</param>
        /// <param name="strFilePath">文件路径</param>
        public void Save(Microsoft.Office.Interop.Excel._Workbook CurBook, string strFilePath)
        {
            CurBook.SaveCopyAs(strFilePath);
        }

        /// <summary>
        /// 保存文件
        /// </summary>
        /// <param name="CurBook">Workbook</param>
        /// <param name="strFilePath">文件路径</param>
        public void SaveAs(Microsoft.Office.Interop.Excel._Workbook CurBook, string strFilePath)
        {
            CurBook.SaveAs(strFilePath, mValue, mValue, mValue, mValue, mValue, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlShared, mValue, mValue, mValue, mValue, mValue);
        }

        /// <summary>
        /// 另存为html文件
        /// </summary>
        /// <param name="CurBook">Workbook</param>
        /// <param name="strFilePath">文件路径</param>
        public void SaveHtml(Microsoft.Office.Interop.Excel._Workbook CurBook, string strFilePath)
        {
            CurBook.SaveAs(strFilePath, Microsoft.Office.Interop.Excel.XlFileFormat.xlHtml, mValue, mValue, mValue, mValue, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, mValue, mValue, mValue, mValue, mValue);
        }


        /// <summary>
        /// 释放内存
        /// </summary>
        public void Dispose(Microsoft.Office.Interop.Excel._Worksheet CurSheet, Microsoft.Office.Interop.Excel._Workbook CurBook, Microsoft.Office.Interop.Excel._Application CurExcel, out string efb)
        {
            int i = 0;
            efb = i.ToString();
            try
            {
                efb = i.ToString();
                i = 1;
                System.Runtime.InteropServices.Marshal.ReleaseComObject(CurSheet);
                CurSheet = null;
                i = 2;
                efb = i.ToString();
                CurBook.Close(false, mValue, mValue);
                i = 3;
                efb = i.ToString();
                System.Runtime.InteropServices.Marshal.ReleaseComObject(CurBook);
                CurBook = null;
                i = 4;
                efb = i.ToString();
                CurExcel.Quit();
                System.Runtime.InteropServices.Marshal.ReleaseComObject(CurExcel);
                CurExcel = null;
                i = 5;
                efb = i.ToString();
                GC.Collect();
                i = 6;
                efb = i.ToString();
                GC.WaitForPendingFinalizers();
                efb = i.ToString();
            }
            catch (System.Exception ex)
            {
                HttpContext.Current.Response.Write("在释放Excel内存空间时发生了一个错误:" + ex);
                i = 7;
                efb = i.ToString();
            }
            finally
            {
                i = 8;
                efb = i.ToString();
                foreach (System.Diagnostics.Process pro in System.Diagnostics.Process.GetProcessesByName("Excel"))
                {
                    //if (pro.StartTime < DateTime.Now)
                    i++;
                    efb = "b" + i.ToString();
                    pro.Kill();
                    efb = "e" + i.ToString();
                }
            }
            efb = "elop" + i.ToString();
            System.GC.SuppressFinalize(this);
            efb = "ov" + i.ToString();
        }
    }

导出Excel方法：

        public  int GetTempExcele(int step, string info,  string fb)
        {
            int result = 0;
            fb = "";
            //建立一个Excel.Application的新进程
            Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
            result = 1;
            if (app == null)
            {
                return result;
            }
            app.Visible = false;
            app.UserControl = true;
            Workbooks workbooks = app.Workbooks;
            result = 2;
            //if (ExistsRegedit07())
            if (true)
            {
                string efb = string.Empty;
                try
                {
                    string syspath = string.Empty;
                    switch (step)
                    {
                        case 1://服务器上的Excel模版存储路径
                            syspath = System.Web.HttpContext.Current.Server.MapPath("\\inc\\Export\\kaoqin_tmp.xlsx");
                            break;
                        default:
                            break;
                    }

                    _Workbook workbook = workbooks.Add(syspath);
                    result = 3;
                    // _Workbook workbook = workbooks.Add(Missing.Value);  //不用模板  
                    Sheets sheets = workbook.Worksheets;
                    result = 4;
                    _Worksheet worksheet = (_Worksheet)sheets.get_Item(1); //这里表示模板只有一个sheet表
                    _Worksheet worksheet2 = (_Worksheet)sheets.get_Item(2);
                    
                    result = 5;
                    if (worksheet == null)
                    {
                        return result;
                    }
                    result = 7;
                    switch (step)
                    {
                        case 1:
                            //一览表写入
                            for (int i = 0; i < grvMonthInfo.Rows.Count; i++)
                            {
                                LinkButton username = (LinkButton)grvMonthInfo.Rows[i].FindControl("linkuser");
                                worksheet.Cells[i + 5, 2] = username.Text;
                                worksheet.Cells[i + 5, 3] = grvMonthInfo.Rows[i].Cells[1].Text;
                            }
                            //员工详细信息写入
                            for (int i = 0; i < grvMonthInfo.Rows.Count; i++)
                            {
                                LinkButton UserId = (LinkButton)grvMonthInfo.Rows[i].FindControl("linkUserId");
                                OAInfo.Userid = int.Parse(UserId.Text);
                                OAInfo.Time = drpdwnlstyear.SelectedValue + "-" + drpdwnlstmonth.SelectedValue;
                                DataSet data = OAl.QueryPersonSign(OAInfo);
                                _Worksheet tempSheet = (_Worksheet)sheets[2 + i];
                                //worksheet2.Copy(Type.Missing, sheets[2 + i]);//i=0,将第二张表拷贝一份出来
                                //_Worksheet tempSheet = (_Worksheet)sheets[3 + i];//第三张表
                                for (int j = 0; j < data.Tables[0].Rows.Count; j++)
                                {
                                    tempSheet.Cells[j + 2, 1] = j + 1;
                                    tempSheet.Cells[j + 2, 2] = data.Tables[0].Rows[j][1].ToString();
                                    tempSheet.Cells[j + 2, 3] = data.Tables[0].Rows[j][2].ToString();
                                    DateTime dt = new DateTime();
                                    if (data.Tables[0].Rows[j][3].ToString() != "")
                                    {
                                        dt = DateTime.Parse(data.Tables[0].Rows[j][3].ToString());
                                        tempSheet.Cells[j + 2, 4] = dt.ToString("HH:mm");
                                    }
                                    else
                                    {
                                        tempSheet.Cells[j + 2, 4] = data.Tables[0].Rows[j][3].ToString();
                                    }
                                    if (data.Tables[0].Rows[j][4].ToString() != "")
                                    {
                                        dt = DateTime.Parse(data.Tables[0].Rows[j][4].ToString());
                                        tempSheet.Cells[j + 2, 5] = dt.ToString("HH:mm");
                                    }
                                    else
                                    {
                                        tempSheet.Cells[j + 2, 5] = data.Tables[0].Rows[j][4].ToString();
                                    }
                                    if (data.Tables[0].Rows[j][5].ToString() != "")
                                    {
                                       int seconds = int.Parse(data.Tables[0].Rows[j][5].ToString());
                                       string  time = string.Format("{00:00}:{01:00}", seconds / 3600, seconds % 3600 / 60);
                                        tempSheet.Cells[j + 2, 6] = time;
                                    }
                                    else
                                    {
                                        tempSheet.Cells[j + 2, 6] = data.Tables[0].Rows[j][5].ToString();
                                    }
                                    if (data.Tables[0].Rows[j][6].ToString()!="")
                                    {
                                       int  seconds = int.Parse(data.Tables[0].Rows[j][6].ToString());
                                       string  time = string.Format("{00:00}:{01:00}", seconds / 3600, seconds % 3600 / 60);
                                        tempSheet.Cells[j + 2, 7] = time;
                                    }
                                    else
                                    {
                                        tempSheet.Cells[j + 2, 7] = data.Tables[0].Rows[j][6].ToString();
                                    }
                                    
                                }
                            }
                            app.DisplayAlerts = true;
                            break;
                        default:
                            break;
                    }
                    result = 8;
                    string filename = DateTime.Now.ToString("yyyyMMddHHmmss") + ".xlsx";
                    string dname = string.Empty;
                    switch (step)
                    {
                        case 1:
                            dname = "kaoqin_311_" + drpdwnlstyear.SelectedItem.Text+drpdwnlstmonth.SelectedItem.Text+ ".xlsx";
                            break;
                        case 2:
                            dname = "jiaowu_baobiao.xlsx";
                            break;
                        case 3:
                            dname = "caiwu_baobiao.xlsx";
                            break;
                        default:
                            break;
                    }
                    filename = HttpContext.Current.Server.MapPath(filename);
                    result = 9;
                    workbook.SaveAs(filename, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);//save_path为要保存到的文件路径
                    result = 10;
                    ExcelOperate excelOperate = new ExcelOperate();
                    result = 11;

                    excelOperate.Dispose(worksheet, workbook, app, out efb);//生成好EXCEL文件后关闭Excel进程
                    result = 15;
                    FileInfo fi = new FileInfo(filename);//excelFile为文件在服务器上的地址
                    HttpResponse contextResponse = HttpContext.Current.Response;
                    contextResponse.Clear();
                    contextResponse.Buffer = true;
                    contextResponse.Charset = "GB2312"; //设置了类型为中文防止乱码的出现 
                    //contextResponse.AppendHeader("Content-Disposition", String.Format("attachment;filename={0}", filename)); //定义输出文件和文件名 
                    contextResponse.AppendHeader("Content-Disposition", String.Format("attachment;filename={0}", dname));
                    contextResponse.AppendHeader("Content-Length", fi.Length.ToString());
                    contextResponse.ContentEncoding = Encoding.Default;
                    contextResponse.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 
                    contextResponse.WriteFile(fi.FullName);
                    //contextResponse.WriteFile(string.Format("tp_extra_step_{0}.xls",step));
                    result = 16;
                    contextResponse.Flush();
                    result = 17;
                    fi.Delete();
                    result = 18;
                    contextResponse.End();
                    result = 19;
                    File.Delete(filename);
                }
                catch (Exception ex)
                {
                    string s = ex.Message;
                    fb = ex.Message + "efb is:" + efb;
                }
                return result;
            }
            return result;
        }

调用Excel

 protected void btnExcel_Click(object sender, EventArgs e)
        {
            int number = GetTempExcele(1,"","");
        }