using System;using System.Diagnostics;//using Excel;namespace DotNet.Utilities{    /// <summary>    /// 操作EXCEL导出数据报表的类    /// </summary>    public class DataToExcel    {        public DataToExcel()        {        }        #region 操作EXCEL的一个类(需要Excel.dll支持)        private int titleColorindex = 15;        /// <summary>        /// 标题背景色        /// </summary>        public int TitleColorIndex        {            set { titleColorindex = value; }            get { return titleColorindex; }        }        private DateTime beforeTime;            //Excel启动之前时间        private DateTime afterTime;                //Excel启动之后时间        #region 创建一个Excel示例        /// <summary>        /// 创建一个Excel示例        /// </summary>        public void CreateExcel()        {            //Excel.Application excel = new Excel.Application();            //excel.Application.Workbooks.Add(true);            //excel.Cells[1, 1] = "第1行第1列";            //excel.Cells[1, 2] = "第1行第2列";            //excel.Cells[2, 1] = "第2行第1列";            //excel.Cells[2, 2] = "第2行第2列";            //excel.Cells[3, 1] = "第3行第1列";            //excel.Cells[3, 2] = "第3行第2列";            ////保存            //excel.ActiveWorkbook.SaveAs("./tt.xls", XlFileFormat.xlExcel9795, null, null, false, false, Excel.XlSaveAsAccessMode.xlNoChange, null, null, null, null, null);            ////打开显示            //excel.Visible = true;            ////            excel.Quit();            ////            excel=null;                        ////            GC.Collect();//垃圾回收        }        #endregion        #region 将DataTable的数据导出显示为报表        /// <summary>        /// 将DataTable的数据导出显示为报表        /// </summary>        /// <param name="dt">要导出的数据</param>        /// <param name="strTitle">导出报表的标题</param>        /// <param name="FilePath">保存文件的路径</param>        /// <returns></returns>        //public string OutputExcel(System.Data.DataTable dt, string strTitle, string FilePath)        //{        //    beforeTime = DateTime.Now;        //    Excel.Application excel;        //    Excel._Workbook xBk;        //    Excel._Worksheet xSt;        //    int rowIndex = 4;        //    int colIndex = 1;        //    excel = new Excel.ApplicationClass();        //    xBk = excel.Workbooks.Add(true);        //    xSt = (Excel._Worksheet)xBk.ActiveSheet;        //    //取得列标题                    //    foreach (DataColumn col in dt.Columns)        //    {        //        colIndex++;        //        excel.Cells[4, colIndex] = col.ColumnName;        //        //设置标题格式为居中对齐        //        xSt.get_Range(excel.Cells[4, colIndex], excel.Cells[4, colIndex]).Font.Bold = true;        //        xSt.get_Range(excel.Cells[4, colIndex], excel.Cells[4, colIndex]).HorizontalAlignment = Excel.XlVAlign.xlVAlignCenter;        //        xSt.get_Range(excel.Cells[4, colIndex], excel.Cells[4, colIndex]).Select();        //        xSt.get_Range(excel.Cells[4, colIndex], excel.Cells[4, colIndex]).Interior.ColorIndex = titleColorindex;//19;//设置为浅黄色，共计有56种        //    }        //    //取得表格中的数据                    //    foreach (DataRow row in dt.Rows)        //    {        //        rowIndex++;        //        colIndex = 1;        //        foreach (DataColumn col in dt.Columns)        //        {        //            colIndex++;        //            if (col.DataType == System.Type.GetType("System.DateTime"))        //            {        //                excel.Cells[rowIndex, colIndex] = (Convert.ToDateTime(row[col.ColumnName].ToString())).ToString("yyyy-MM-dd");        //                xSt.get_Range(excel.Cells[rowIndex, colIndex], excel.Cells[rowIndex, colIndex]).HorizontalAlignment = Excel.XlVAlign.xlVAlignCenter;//设置日期型的字段格式为居中对齐        //            }        //            else        //                if (col.DataType == System.Type.GetType("System.String"))        //                {        //                    excel.Cells[rowIndex, colIndex] = "‘" + row[col.ColumnName].ToString();        //                    xSt.get_Range(excel.Cells[rowIndex, colIndex], excel.Cells[rowIndex, colIndex]).HorizontalAlignment = Excel.XlVAlign.xlVAlignCenter;//设置字符型的字段格式为居中对齐        //                }        //                else        //                {        //                    excel.Cells[rowIndex, colIndex] = row[col.ColumnName].ToString();        //                }        //        }        //    }        //    //加载一个合计行                    //    int rowSum = rowIndex + 1;        //    int colSum = 2;        //    excel.Cells[rowSum, 2] = "合计";        //    xSt.get_Range(excel.Cells[rowSum, 2], excel.Cells[rowSum, 2]).HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;        //    //设置选中的部分的颜色                    //    xSt.get_Range(excel.Cells[rowSum, colSum], excel.Cells[rowSum, colIndex]).Select();        //    //xSt.get_Range(excel.Cells[rowSum,colSum],excel.Cells[rowSum,colIndex]).Interior.ColorIndex =Assistant.GetConfigInt("ColorIndex");// 1;//设置为浅黄色，共计有56种        //    //取得整个报表的标题                    //    excel.Cells[2, 2] = strTitle;        //    //设置整个报表的标题格式                    //    xSt.get_Range(excel.Cells[2, 2], excel.Cells[2, 2]).Font.Bold = true;        //    xSt.get_Range(excel.Cells[2, 2], excel.Cells[2, 2]).Font.Size = 22;        //    //设置报表表格为最适应宽度                    //    xSt.get_Range(excel.Cells[4, 2], excel.Cells[rowSum, colIndex]).Select();        //    xSt.get_Range(excel.Cells[4, 2], excel.Cells[rowSum, colIndex]).Columns.AutoFit();        //    //设置整个报表的标题为跨列居中                    //    xSt.get_Range(excel.Cells[2, 2], excel.Cells[2, colIndex]).Select();        //    xSt.get_Range(excel.Cells[2, 2], excel.Cells[2, colIndex]).HorizontalAlignment = Excel.XlHAlign.xlHAlignCenterAcrossSelection;        //    //绘制边框                    //    xSt.get_Range(excel.Cells[4, 2], excel.Cells[rowSum, colIndex]).Borders.LineStyle = 1;        //    xSt.get_Range(excel.Cells[4, 2], excel.Cells[rowSum, 2]).Borders[Excel.XlBordersIndex.xlEdgeLeft].Weight = Excel.XlBorderWeight.xlThick;//设置左边线加粗        //    xSt.get_Range(excel.Cells[4, 2], excel.Cells[4, colIndex]).Borders[Excel.XlBordersIndex.xlEdgeTop].Weight = Excel.XlBorderWeight.xlThick;//设置上边线加粗        //    xSt.get_Range(excel.Cells[4, colIndex], excel.Cells[rowSum, colIndex]).Borders[Excel.XlBordersIndex.xlEdgeRight].Weight = Excel.XlBorderWeight.xlThick;//设置右边线加粗        //    xSt.get_Range(excel.Cells[rowSum, 2], excel.Cells[rowSum, colIndex]).Borders[Excel.XlBordersIndex.xlEdgeBottom].Weight = Excel.XlBorderWeight.xlThick;//设置下边线加粗        //    afterTime = DateTime.Now;        //    //显示效果                    //    //excel.Visible=true;                    //    //excel.Sheets[0] = "sss";        //    ClearFile(FilePath);        //    string filename = DateTime.Now.ToString("yyyyMMddHHmmssff") + ".xls";        //    excel.ActiveWorkbook.SaveAs(FilePath + filename, Excel.XlFileFormat.xlExcel9795, null, null, false, false, Excel.XlSaveAsAccessMode.xlNoChange, null, null, null, null, null);        //    //wkbNew.SaveAs strBookName;        //    //excel.Save(strExcelFileName);        //    #region  结束Excel进程        //    //需要对Excel的DCOM对象进行配置:dcomcnfg        //    //excel.Quit();        //    //excel=null;                    //    xBk.Close(null, null, null);        //    excel.Workbooks.Close();        //    excel.Quit();        //    //注意：这里用到的所有Excel对象都要执行这个操作，否则结束不了Excel进程        //    //            if(rng != null)        //    //            {        //    //                System.Runtime.InteropServices.Marshal.ReleaseComObject(rng);        //    //                rng = null;        //    //            }        //    //            if(tb != null)        //    //            {        //    //                System.Runtime.InteropServices.Marshal.ReleaseComObject(tb);        //    //                tb = null;        //    //            }        //    if (xSt != null)        //    {        //        System.Runtime.InteropServices.Marshal.ReleaseComObject(xSt);        //        xSt = null;        //    }        //    if (xBk != null)        //    {        //        System.Runtime.InteropServices.Marshal.ReleaseComObject(xBk);        //        xBk = null;        //    }        //    if (excel != null)        //    {        //        System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);        //        excel = null;        //    }        //    GC.Collect();//垃圾回收        //    #endregion        //    return filename;        //}        #endregion        #region Kill Excel进程        /// <summary>        /// 结束Excel进程        /// </summary>        public void KillExcelProcess()        {            Process[] myProcesses;            DateTime startTime;            myProcesses = Process.GetProcessesByName("Excel");            //得不到Excel进程ID，暂时只能判断进程启动时间            foreach (Process myProcess in myProcesses)            {                startTime = myProcess.StartTime;                if (startTime > beforeTime && startTime < afterTime)                {                    myProcess.Kill();                }            }        }        #endregion        #endregion        #region 将DataTable的数据导出显示为报表(不使用Excel对象，使用COM.Excel)        #region 使用示例        /*使用示例：         * DataSet ds=(DataSet)Session["AdBrowseHitDayList"];            string ExcelFolder=Assistant.GetConfigString("ExcelFolder");            string FilePath=Server.MapPath(".")+"\\"+ExcelFolder+"\\";                        //生成列的中文对应表            Hashtable nameList = new Hashtable();            nameList.Add("ADID", "广告编码");            nameList.Add("ADName", "广告名称");            nameList.Add("year", "年");            nameList.Add("month", "月");            nameList.Add("browsum", "显示数");            nameList.Add("hitsum", "点击数");            nameList.Add("BrowsinglIP", "独立IP显示");            nameList.Add("HitsinglIP", "独立IP点击");            //利用excel对象            DataToExcel dte=new DataToExcel();            string filename="";            try            {                            if(ds.Tables[0].Rows.Count>0)                {                    filename=dte.DataExcel(ds.Tables[0],"标题",FilePath,nameList);                }            }            catch            {                //dte.KillExcelProcess();            }                        if(filename!="")            {                Response.Redirect(ExcelFolder+"\\"+filename,true);            }         *          * */        #endregion        /// <summary>        /// 将DataTable的数据导出显示为报表(不使用Excel对象)        /// </summary>        /// <param name="dt">数据DataTable</param>        /// <param name="strTitle">标题</param>        /// <param name="FilePath">生成文件的路径</param>        /// <param name="nameList"></param>        /// <returns></returns>        //public string DataExcel(System.Data.DataTable dt, string strTitle, string FilePath, Hashtable nameList)        //{        //    COM.Excel.cExcelFile excel = new COM.Excel.cExcelFile();        //    ClearFile(FilePath);        //    string filename = DateTime.Now.ToString("yyyyMMddHHmmssff") + ".xls";        //    excel.CreateFile(FilePath + filename);        //    excel.PrintGridLines = false;        //    COM.Excel.cExcelFile.MarginTypes mt1 = COM.Excel.cExcelFile.MarginTypes.xlsTopMargin;        //    COM.Excel.cExcelFile.MarginTypes mt2 = COM.Excel.cExcelFile.MarginTypes.xlsLeftMargin;        //    COM.Excel.cExcelFile.MarginTypes mt3 = COM.Excel.cExcelFile.MarginTypes.xlsRightMargin;        //    COM.Excel.cExcelFile.MarginTypes mt4 = COM.Excel.cExcelFile.MarginTypes.xlsBottomMargin;        //    double height = 1.5;        //    excel.SetMargin(ref mt1, ref height);        //    excel.SetMargin(ref mt2, ref height);        //    excel.SetMargin(ref mt3, ref height);        //    excel.SetMargin(ref mt4, ref height);        //    COM.Excel.cExcelFile.FontFormatting ff = COM.Excel.cExcelFile.FontFormatting.xlsNoFormat;        //    string font = "宋体";        //    short fontsize = 9;        //    excel.SetFont(ref font, ref fontsize, ref ff);        //    byte b1 = 1,        //        b2 = 12;        //    short s3 = 12;        //    excel.SetColumnWidth(ref b1, ref b2, ref s3);        //    string header = "页眉";        //    string footer = "页脚";        //    excel.SetHeader(ref header);        //    excel.SetFooter(ref footer);        //    COM.Excel.cExcelFile.ValueTypes vt = COM.Excel.cExcelFile.ValueTypes.xlsText;        //    COM.Excel.cExcelFile.CellFont cf = COM.Excel.cExcelFile.CellFont.xlsFont0;        //    COM.Excel.cExcelFile.CellAlignment ca = COM.Excel.cExcelFile.CellAlignment.xlsCentreAlign;        //    COM.Excel.cExcelFile.CellHiddenLocked chl = COM.Excel.cExcelFile.CellHiddenLocked.xlsNormal;        //    // 报表标题        //    int cellformat = 1;        //    //            int rowindex = 1,colindex = 3;                            //    //            object title = (object)strTitle;        //    //            excel.WriteValue(ref vt, ref cf, ref ca, ref chl,ref rowindex,ref colindex,ref title,ref cellformat);        //    int rowIndex = 1;//起始行        //    int colIndex = 0;        //    //取得列标题                        //    foreach (DataColumn colhead in dt.Columns)        //    {        //        colIndex++;        //        string name = colhead.ColumnName.Trim();        //        object namestr = (object)name;        //        IDictionaryEnumerator Enum = nameList.GetEnumerator();        //        while (Enum.MoveNext())        //        {        //            if (Enum.Key.ToString().Trim() == name)        //            {        //                namestr = Enum.Value;        //            }        //        }        //        excel.WriteValue(ref vt, ref cf, ref ca, ref chl, ref rowIndex, ref colIndex, ref namestr, ref cellformat);        //    }        //    //取得表格中的数据                    //    foreach (DataRow row in dt.Rows)        //    {        //        rowIndex++;        //        colIndex = 0;        //        foreach (DataColumn col in dt.Columns)        //        {        //            colIndex++;        //            if (col.DataType == System.Type.GetType("System.DateTime"))        //            {        //                object str = (object)(Convert.ToDateTime(row[col.ColumnName].ToString())).ToString("yyyy-MM-dd"); ;        //                excel.WriteValue(ref vt, ref cf, ref ca, ref chl, ref rowIndex, ref colIndex, ref str, ref cellformat);        //            }        //            else        //            {        //                object str = (object)row[col.ColumnName].ToString();        //                excel.WriteValue(ref vt, ref cf, ref ca, ref chl, ref rowIndex, ref colIndex, ref str, ref cellformat);        //            }        //        }        //    }        //    int ret = excel.CloseFile();        //    //            if(ret!=0)        //    //            {        //    //                //MessageBox.Show(this,"Error!");        //    //            }        //    //            else        //    //            {        //    //                //MessageBox.Show(this,"请打开文件c:\\test.xls!");        //    //            }        //    return filename;        //}        #endregion        #region  清理过时的Excel文件        private void ClearFile(string FilePath)        {            String[] Files = System.IO.Directory.GetFiles(FilePath);            if (Files.Length > 10)            {                for (int i = 0; i < 10; i++)                {                    try                    {                        System.IO.File.Delete(Files[i]);                    }                    catch                    {                    }                }            }        }        #endregion    }}

using System;using System.IO;using System.Data;using System.Collections;using System.Data.OleDb;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace DotNet.Utilities{    /// <summary>    /// Excel操作类    /// </summary>    /// Microsoft Excel 11.0 Object Library    public class ExcelHelper    {        #region 数据导出至Excel文件        /// </summary>         /// 导出Excel文件，自动返回可下载的文件流         /// </summary>         public static void DataTable1Excel(System.Data.DataTable dtData)        {            GridView gvExport = null;            HttpContext curContext = HttpContext.Current;            StringWriter strWriter = null;            HtmlTextWriter htmlWriter = null;            if (dtData != null)            {                curContext.Response.ContentType = "application/vnd.ms-excel";                curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");                curContext.Response.Charset = "utf-8";                strWriter = new StringWriter();                htmlWriter = new HtmlTextWriter(strWriter);                gvExport = new GridView();                gvExport.DataSource = dtData.DefaultView;                gvExport.AllowPaging = false;                gvExport.DataBind();                gvExport.RenderControl(htmlWriter);                curContext.Response.Write("<meta http-equiv=\"Content-Type\" content=\"text/html;charset=gb2312\"/>" + strWriter.ToString());                curContext.Response.End();            }        }        /// <summary>        /// 导出Excel文件，转换为可读模式        /// </summary>        public static void DataTable2Excel(System.Data.DataTable dtData)        {            DataGrid dgExport = null;            HttpContext curContext = HttpContext.Current;            StringWriter strWriter = null;            HtmlTextWriter htmlWriter = null;            if (dtData != null)            {                curContext.Response.ContentType = "application/vnd.ms-excel";                curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;                curContext.Response.Charset = "";                strWriter = new StringWriter();                htmlWriter = new HtmlTextWriter(strWriter);                dgExport = new DataGrid();                dgExport.DataSource = dtData.DefaultView;                dgExport.AllowPaging = false;                dgExport.DataBind();                dgExport.RenderControl(htmlWriter);                curContext.Response.Write(strWriter.ToString());                curContext.Response.End();            }        }        /// <summary>        /// 导出Excel文件，并自定义文件名        /// </summary>        public static void DataTable3Excel(System.Data.DataTable dtData, String FileName)        {            GridView dgExport = null;            HttpContext curContext = HttpContext.Current;            StringWriter strWriter = null;            HtmlTextWriter htmlWriter = null;            if (dtData != null)            {                HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8);                curContext.Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");                curContext.Response.ContentType = "application nd.ms-excel";                curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;                curContext.Response.Charset = "GB2312";                strWriter = new StringWriter();                htmlWriter = new HtmlTextWriter(strWriter);                dgExport = new GridView();                dgExport.DataSource = dtData.DefaultView;                dgExport.AllowPaging = false;                dgExport.DataBind();                dgExport.RenderControl(htmlWriter);                curContext.Response.Write(strWriter.ToString());                curContext.Response.End();            }        }        /// <summary>        /// 将数据导出至Excel文件        /// </summary>        /// <param name="Table">DataTable对象</param>        /// <param name="ExcelFilePath">Excel文件路径</param>        public static bool OutputToExcel(DataTable Table, string ExcelFilePath)        {            if (File.Exists(ExcelFilePath))            {                throw new Exception("该文件已经存在！");            }            if ((Table.TableName.Trim().Length == 0) || (Table.TableName.ToLower() == "table"))            {                Table.TableName = "Sheet1";            }            //数据表的列数            int ColCount = Table.Columns.Count;            //用于记数，实例化参数时的序号            int i = 0;            //创建参数            OleDbParameter[] para = new OleDbParameter[ColCount];            //创建表结构的SQL语句            string TableStructStr = @"Create Table " + Table.TableName + "(";            //连接字符串            string connString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0;";            OleDbConnection objConn = new OleDbConnection(connString);            //创建表结构            OleDbCommand objCmd = new OleDbCommand();            //数据类型集合            ArrayList DataTypeList = new ArrayList();            DataTypeList.Add("System.Decimal");            DataTypeList.Add("System.Double");            DataTypeList.Add("System.Int16");            DataTypeList.Add("System.Int32");            DataTypeList.Add("System.Int64");            DataTypeList.Add("System.Single");            //遍历数据表的所有列，用于创建表结构            foreach (DataColumn col in Table.Columns)            {                //如果列属于数字列，则设置该列的数据类型为double                if (DataTypeList.IndexOf(col.DataType.ToString()) >= 0)                {                    para[i] = new OleDbParameter("@" + col.ColumnName, OleDbType.Double);                    objCmd.Parameters.Add(para[i]);                    //如果是最后一列                    if (i + 1 == ColCount)                    {                        TableStructStr += col.ColumnName + " double)";                    }                    else                    {                        TableStructStr += col.ColumnName + " double,";                    }                }                else                {                    para[i] = new OleDbParameter("@" + col.ColumnName, OleDbType.VarChar);                    objCmd.Parameters.Add(para[i]);                    //如果是最后一列                    if (i + 1 == ColCount)                    {                        TableStructStr += col.ColumnName + " varchar)";                    }                    else                    {                        TableStructStr += col.ColumnName + " varchar,";                    }                }                i++;            }            //创建Excel文件及文件结构            try            {                objCmd.Connection = objConn;                objCmd.CommandText = TableStructStr;                if (objConn.State == ConnectionState.Closed)                {                    objConn.Open();                }                objCmd.ExecuteNonQuery();            }            catch (Exception exp)            {                throw exp;            }            //插入记录的SQL语句            string InsertSql_1 = "Insert into " + Table.TableName + " (";            string InsertSql_2 = " Values (";            string InsertSql = "";            //遍历所有列，用于插入记录，在此创建插入记录的SQL语句            for (int colID = 0; colID < ColCount; colID++)            {                if (colID + 1 == ColCount)  //最后一列                {                    InsertSql_1 += Table.Columns[colID].ColumnName + ")";                    InsertSql_2 += "@" + Table.Columns[colID].ColumnName + ")";                }                else                {                    InsertSql_1 += Table.Columns[colID].ColumnName + ",";                    InsertSql_2 += "@" + Table.Columns[colID].ColumnName + ",";                }            }            InsertSql = InsertSql_1 + InsertSql_2;            //遍历数据表的所有数据行            for (int rowID = 0; rowID < Table.Rows.Count; rowID++)            {                for (int colID = 0; colID < ColCount; colID++)                {                    if (para[colID].DbType == DbType.Double && Table.Rows[rowID][colID].ToString().Trim() == "")                    {                        para[colID].Value = 0;                    }                    else                    {                        para[colID].Value = Table.Rows[rowID][colID].ToString().Trim();                    }                }                try                {                    objCmd.CommandText = InsertSql;                    objCmd.ExecuteNonQuery();                }                catch (Exception exp)                {                    string str = exp.Message;                }            }            try            {                if (objConn.State == ConnectionState.Open)                {                    objConn.Close();                }            }            catch (Exception exp)            {                throw exp;            }            return true;        }        /// <summary>        /// 将数据导出至Excel文件        /// </summary>        /// <param name="Table">DataTable对象</param>        /// <param name="Columns">要导出的数据列集合</param>        /// <param name="ExcelFilePath">Excel文件路径</param>        public static bool OutputToExcel(DataTable Table, ArrayList Columns, string ExcelFilePath)        {            if (File.Exists(ExcelFilePath))            {                throw new Exception("该文件已经存在！");            }            //如果数据列数大于表的列数，取数据表的所有列            if (Columns.Count > Table.Columns.Count)            {                for (int s = Table.Columns.Count + 1; s <= Columns.Count; s++)                {                    Columns.RemoveAt(s);   //移除数据表列数后的所有列                }            }            //遍历所有的数据列，如果有数据列的数据类型不是 DataColumn，则将它移除            DataColumn column = new DataColumn();            for (int j = 0; j < Columns.Count; j++)            {                try                {                    column = (DataColumn)Columns[j];                }                catch (Exception)                {                    Columns.RemoveAt(j);                }            }            if ((Table.TableName.Trim().Length == 0) || (Table.TableName.ToLower() == "table"))            {                Table.TableName = "Sheet1";            }            //数据表的列数            int ColCount = Columns.Count;            //创建参数            OleDbParameter[] para = new OleDbParameter[ColCount];            //创建表结构的SQL语句            string TableStructStr = @"Create Table " + Table.TableName + "(";            //连接字符串            string connString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0;";            OleDbConnection objConn = new OleDbConnection(connString);            //创建表结构            OleDbCommand objCmd = new OleDbCommand();            //数据类型集合            ArrayList DataTypeList = new ArrayList();            DataTypeList.Add("System.Decimal");            DataTypeList.Add("System.Double");            DataTypeList.Add("System.Int16");            DataTypeList.Add("System.Int32");            DataTypeList.Add("System.Int64");            DataTypeList.Add("System.Single");            DataColumn col = new DataColumn();            //遍历数据表的所有列，用于创建表结构            for (int k = 0; k < ColCount; k++)            {                col = (DataColumn)Columns[k];                //列的数据类型是数字型                if (DataTypeList.IndexOf(col.DataType.ToString().Trim()) >= 0)                {                    para[k] = new OleDbParameter("@" + col.Caption.Trim(), OleDbType.Double);                    objCmd.Parameters.Add(para[k]);                    //如果是最后一列                    if (k + 1 == ColCount)                    {                        TableStructStr += col.Caption.Trim() + " Double)";                    }                    else                    {                        TableStructStr += col.Caption.Trim() + " Double,";                    }                }                else                {                    para[k] = new OleDbParameter("@" + col.Caption.Trim(), OleDbType.VarChar);                    objCmd.Parameters.Add(para[k]);                    //如果是最后一列                    if (k + 1 == ColCount)                    {                        TableStructStr += col.Caption.Trim() + " VarChar)";                    }                    else                    {                        TableStructStr += col.Caption.Trim() + " VarChar,";                    }                }            }            //创建Excel文件及文件结构            try            {                objCmd.Connection = objConn;                objCmd.CommandText = TableStructStr;                if (objConn.State == ConnectionState.Closed)                {                    objConn.Open();                }                objCmd.ExecuteNonQuery();            }            catch (Exception exp)            {                throw exp;            }            //插入记录的SQL语句            string InsertSql_1 = "Insert into " + Table.TableName + " (";            string InsertSql_2 = " Values (";            string InsertSql = "";            //遍历所有列，用于插入记录，在此创建插入记录的SQL语句            for (int colID = 0; colID < ColCount; colID++)            {                if (colID + 1 == ColCount)  //最后一列                {                    InsertSql_1 += Columns[colID].ToString().Trim() + ")";                    InsertSql_2 += "@" + Columns[colID].ToString().Trim() + ")";                }                else                {                    InsertSql_1 += Columns[colID].ToString().Trim() + ",";                    InsertSql_2 += "@" + Columns[colID].ToString().Trim() + ",";                }            }            InsertSql = InsertSql_1 + InsertSql_2;            //遍历数据表的所有数据行            DataColumn DataCol = new DataColumn();            for (int rowID = 0; rowID < Table.Rows.Count; rowID++)            {                for (int colID = 0; colID < ColCount; colID++)                {                    //因为列不连续，所以在取得单元格时不能用行列编号，列需得用列的名称                    DataCol = (DataColumn)Columns[colID];                    if (para[colID].DbType == DbType.Double && Table.Rows[rowID][DataCol.Caption].ToString().Trim() == "")                    {                        para[colID].Value = 0;                    }                    else                    {                        para[colID].Value = Table.Rows[rowID][DataCol.Caption].ToString().Trim();                    }                }                try                {                    objCmd.CommandText = InsertSql;                    objCmd.ExecuteNonQuery();                }                catch (Exception exp)                {                    string str = exp.Message;                }            }            try            {                if (objConn.State == ConnectionState.Open)                {                    objConn.Close();                }            }            catch (Exception exp)            {                throw exp;            }            return true;        }        #endregion        /// <summary>        /// 获取Excel文件数据表列表        /// </summary>        public static ArrayList GetExcelTables(string ExcelFileName)        {            DataTable dt = new DataTable();            ArrayList TablesList = new ArrayList();            if (File.Exists(ExcelFileName))            {                using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;Data Source=" + ExcelFileName))                {                    try                    {                        conn.Open();                        dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });                    }                    catch (Exception exp)                    {                        throw exp;                    }                    //获取数据表个数                    int tablecount = dt.Rows.Count;                    for (int i = 0; i < tablecount; i++)                    {                        string tablename = dt.Rows[i][2].ToString().Trim().TrimEnd(‘$‘);                        if (TablesList.IndexOf(tablename) < 0)                        {                            TablesList.Add(tablename);                        }                    }                }            }            return TablesList;        }        /// <summary>        /// 将Excel文件导出至DataTable(第一行作为表头)        /// </summary>        /// <param name="ExcelFilePath">Excel文件路径</param>        /// <param name="TableName">数据表名，如果数据表名错误，默认为第一个数据表名</param>        public static DataTable InputFromExcel(string ExcelFilePath, string TableName)        {            if (!File.Exists(ExcelFilePath))            {                throw new Exception("Excel文件不存在！");            }            //如果数据表名不存在，则数据表名为Excel文件的第一个数据表            ArrayList TableList = new ArrayList();            TableList = GetExcelTables(ExcelFilePath);            if (TableName.IndexOf(TableName) < 0)            {                TableName = TableList[0].ToString().Trim();            }            DataTable table = new DataTable();            OleDbConnection dbcon = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0");            OleDbCommand cmd = new OleDbCommand("select * from [" + TableName + "$]", dbcon);            OleDbDataAdapter adapter = new OleDbDataAdapter(cmd);            try            {                if (dbcon.State == ConnectionState.Closed)                {                    dbcon.Open();                }                adapter.Fill(table);            }            catch (Exception exp)            {                throw exp;            }            finally            {                if (dbcon.State == ConnectionState.Open)                {                    dbcon.Close();                }            }            return table;        }        /// <summary>        /// 获取Excel文件指定数据表的数据列表        /// </summary>        /// <param name="ExcelFileName">Excel文件名</param>        /// <param name="TableName">数据表名</param>        public static ArrayList GetExcelTableColumns(string ExcelFileName, string TableName)        {            DataTable dt = new DataTable();            ArrayList ColsList = new ArrayList();            if (File.Exists(ExcelFileName))            {                using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;Data Source=" + ExcelFileName))                {                    conn.Open();                    dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, new object[] { null, null, TableName, null });                    //获取列个数                    int colcount = dt.Rows.Count;                    for (int i = 0; i < colcount; i++)                    {                        string colname = dt.Rows[i]["Column_Name"].ToString().Trim();                        ColsList.Add(colname);                    }                }            }            return ColsList;        }    }}

using System;using System.Web;using System.Web.UI;using System.IO;using System.Web.UI.WebControls;namespace DotNet.Utilities{    public class ExportExcel    {        protected void ExportData(string strContent, string FileName)        {            FileName = FileName + DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString();            HttpContext.Current.Response.Clear();            HttpContext.Current.Response.Charset = "gb2312";            HttpContext.Current.Response.ContentType = "application/ms-excel";            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;            //this.Page.EnableViewState = false;             // 添加头信息，为"文件下载/另存为"对话框指定默认文件名             HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + FileName + ".xls");            // 把文件流发送到客户端             HttpContext.Current.Response.Write("<html><head><meta http-equiv=Content-Type content=\"text/html; charset=utf-8\">");            HttpContext.Current.Response.Write(strContent);            HttpContext.Current.Response.Write("</body></html>");            // 停止页面的执行             //Response.End();        }        /// <summary>        /// 导出Excel        /// </summary>        /// <param name="obj"></param>        public void ExportData(GridView obj)        {            try            {                string style = "";                if (obj.Rows.Count > 0)                {                    style = @"<style> .text { mso-number-format:\@; } </script> ";                }                else                {                    style = "no data.";                }                HttpContext.Current.Response.ClearContent();                DateTime dt = DateTime.Now;                string filename = dt.Year.ToString() + dt.Month.ToString() + dt.Day.ToString() + dt.Hour.ToString() + dt.Minute.ToString() + dt.Second.ToString();                HttpContext.Current.Response.AddHeader("content-disposition", "attachment; filename=ExportData" + filename + ".xls");                HttpContext.Current.Response.ContentType = "application/ms-excel";                HttpContext.Current.Response.Charset = "GB2312";                HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");                StringWriter sw = new StringWriter();                HtmlTextWriter htw = new HtmlTextWriter(sw);                obj.RenderControl(htw);                HttpContext.Current.Response.Write(style);                HttpContext.Current.Response.Write(sw.ToString());                HttpContext.Current.Response.End();            }            catch            {            }        }    }}

using System.Data;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.IO;using System.Text;namespace DotNet.Utilities{    /// <summary>    /// Summary description for GridViewExport    /// </summary>    public class GridViewExport    {        public GridViewExport()        {            //            // TODO: Add constructor logic here            //        }        public static void Export(string fileName, GridView gv)        {            HttpContext.Current.Response.Clear();            HttpContext.Current.Response.AddHeader(                "content-disposition", string.Format("attachment; filename={0}", fileName));            HttpContext.Current.Response.ContentType = "application/ms-excel";            //HttpContext.Current.Response.Charset = "utf-8";            using (StringWriter sw = new StringWriter())            {                using (HtmlTextWriter htw = new HtmlTextWriter(sw))                {                    //  Create a form to contain the grid                    Table table = new Table();                    table.GridLines = GridLines.Both;  //单元格之间添加实线                    //  add the header row to the table                    if (gv.HeaderRow != null)                    {                        PrepareControlForExport(gv.HeaderRow);                        table.Rows.Add(gv.HeaderRow);                    }                    //  add each of the data rows to the table                    foreach (GridViewRow row in gv.Rows)                    {                        PrepareControlForExport(row);                        table.Rows.Add(row);                    }                    //  add the footer row to the table                    if (gv.FooterRow != null)                    {                        PrepareControlForExport(gv.FooterRow);                        table.Rows.Add(gv.FooterRow);                    }                    //  render the table into the htmlwriter                    table.RenderControl(htw);                    //  render the htmlwriter into the response                    HttpContext.Current.Response.Write(sw.ToString());                    HttpContext.Current.Response.End();                }            }        }        /// <summary>        /// Replace any of the contained controls with literals        /// </summary>        /// <param name="control"></param>        private static void PrepareControlForExport(Control control)        {            for (int i = 0; i < control.Controls.Count; i++)            {                Control current = control.Controls[i];                if (current is LinkButton)                {                    control.Controls.Remove(current);                    control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text));                }                else if (current is ImageButton)                {                    control.Controls.Remove(current);                    control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText));                }                else if (current is HyperLink)                {                    control.Controls.Remove(current);                    control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text));                }                else if (current is DropDownList)                {                    control.Controls.Remove(current);                    control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text));                }                else if (current is CheckBox)                {                    control.Controls.Remove(current);                    control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False"));                }                if (current.HasControls())                {                    PrepareControlForExport(current);                }            }        }        /// <summary>        /// 导出Grid的数据(全部)到Excel        /// 字段全部为BoundField类型时可用        /// 要是字段为TemplateField模板型时就取不到数据        /// </summary>        /// <param name="grid">grid的ID</param>        /// <param name="dt">数据源</param>        /// <param name="excelFileName">要导出Excel的文件名</param>        public static void OutputExcel(GridView grid, DataTable dt, string excelFileName)        {            Page page = (Page)HttpContext.Current.Handler;            page.Response.Clear();            string fileName = System.Web.HttpUtility.UrlEncode(System.Text.Encoding.UTF8.GetBytes(excelFileName));            page.Response.AddHeader("Content-Disposition", "attachment:filename=" + fileName + ".xls");            page.Response.ContentType = "application/vnd.ms-excel";            page.Response.Charset = "utf-8";            StringBuilder s = new StringBuilder();            s.Append("<HTML><HEAD><TITLE>" + fileName + "</TITLE><META http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"></head><body>");            int count = grid.Columns.Count;            s.Append("<table border=1>");            s.AppendLine("<tr>");            for (int i = 0; i < count; i++)            {                if (grid.Columns[i].GetType() == typeof(BoundField))                    s.Append("<td>" + grid.Columns[i].HeaderText + "</td>");                //s.Append("<td>" + grid.Columns[i].HeaderText + "</td>");            }            s.Append("</tr>");            foreach (DataRow dr in dt.Rows)            {                s.AppendLine("<tr>");                for (int n = 0; n < count; n++)                {                    if (grid.Columns[n].Visible && grid.Columns[n].GetType() == typeof(BoundField))                        s.Append("<td>" + dr[((BoundField)grid.Columns[n]).DataField].ToString() + "</td>");                }                s.AppendLine("</tr>");            }            s.Append("</table>");            s.Append("</body></html>");            page.Response.BinaryWrite(System.Text.Encoding.GetEncoding("utf-8").GetBytes(s.ToString()));            page.Response.End();        }    }}