c#操作Excel并指定单元格格式

        /// <summary>
        /// 把数据插入到Excel表中
        /// </summary>
        /// <param name="sql">Sql语句</param>
        /// <param name="Tablename">sheet名或者表名</param>
        /// <returns></returns>
        public void InsertDataToExcel()
        {
            
            


            object missing = System.Reflection.Missing.Value;
            Excel.Application app = new Excel.ApplicationClass();
            app.Application.Workbooks.Add(true);
            Excel.Workbook book = (Excel.Workbook)app.ActiveWorkbook;
            Excel.Worksheet sheet = (Excel.Worksheet)book.ActiveSheet;
           
            // 赋死值
            for (int t = 1;t <= 5; t++)
            {
                for (int i = 1; i <= 20; i++)
                {
                    Excel.Range rang1;
                    rang1 = sheet.get_Range(sheet.Cells[t, i], sheet.Cells[t, i]);
                    rang1.Merge(System.Reflection.Missing.Value);
                    rang1.ColumnWidth = 15;
                    rang1.Font.Size = 13;
                    rang1.Font.Bold = true;
                    rang1.Borders.ColorIndex = "1";
                    if (t == 3)
                    {
                        rang1.Font.ColorIndex = "3";
                    }
                    else
                    {
                        rang1.Font.ColorIndex = "5";
                    }
                }
            }
          
            sheet.Cells[1, 1] = "航空公司";
            
            sheet.Cells[1, 2] = "适用行程";
            sheet.Cells[1, 3] = "出发机场";
            sheet.Cells[1, 4] = "到达机场";
            sheet.Cells[1, 5] = "排除出发机场";
            sheet.Cells[1, 6] = "排除到达机场";
            sheet.Cells[1, 7] = "适用航班";
            sheet.Cells[1, 8] = "不适用航班";
            sheet.Cells[1, 9] = "班期限制";
            sheet.Cells[1, 10] = "适用舱位";
            sheet.Cells[1, 11] = "返佣政策";
            sheet.Cells[1, 12] = "乘机开始日期";
            sheet.Cells[1, 13] = "乘机截止日期";
            sheet.Cells[1, 14] = "出票开始日期";
            sheet.Cells[1, 15] = "出票截止日期";
            sheet.Cells[1, 16] = "适用票证";
            sheet.Cells[1, 17] = "是否需要换PNR";
            sheet.Cells[1, 18] = "是否自动出票";
            sheet.Cells[1, 19] = "备注信息";
            sheet.Cells[1, 20] = "政策发布";

            sheet.Cells[2, 1] = "MU";
            sheet.Cells[2, 2] = "单程";
            sheet.Cells[2, 3] = "PEK/SHA";
            sheet.Cells[2, 4] = "XXX";
            sheet.Cells[2, 5] = "PEK";
            sheet.Cells[2, 6] = "SZX";
            sheet.Cells[2, 7] = "5167/5233";
            sheet.Cells[2, 8] = "5166/5231";
            sheet.Cells[2, 9] = "1|3|5|6";
            sheet.Cells[2, 10] = "F/C/Y/B";
            sheet.Cells[2, 11] = "7.5";
            sheet.Cells[2, 12] = "3.5";
            sheet.Cells[2, 13] = "2010-3-1";
            sheet.Cells[2, 14] = "2010-3-21";
            sheet.Cells[2, 15] = "2010-3-1";
            sheet.Cells[2, 16] = "2010-3-31";
            sheet.Cells[2, 17] = "BSP";
            sheet.Cells[2, 18] = "是";
            sheet.Cells[2, 19] = "是";
            sheet.Cells[2, 20] = "1|2|3";

            sheet.Cells[3, 1] = "1、必须填写 2、只限填写某一个航空公司代码";
            sheet.Cells[3, 2] = "1、必须填写 2、1）单程；2）往返；3）单程及往返";
            sheet.Cells[3, 3] = "1、必须填写 2、只限填写机场三字代码，可填写多个，多个时以英文的/隔开,并且支持XXX（全国）";
            sheet.Cells[3, 4] = "1、必须填写 2、只限填写机场三字代码，可填写多个，多个时以英文的/隔开";
            sheet.Cells[3, 5] = "1、必须填写 2、只限填写机场三字代码，可填写多个，多个时以英文的/隔开";
            sheet.Cells[3, 6] = "1、非必填项 2、各个航班号中间用英文的“/”隔开。例：CA5166,CA5231 输入 5166/5231，如果无限制，则不填写";
            sheet.Cells[3, 7] = "1、非必填项 2、各个航班号中间用英文的“/”隔开。例：CA5166,CA5231 输入 5166/5231，如果无限制，则不填写";
            sheet.Cells[3, 8] = "1、非必填项 2、班期以“|”隔开，如果无限制，则不填写";
            sheet.Cells[3, 9] = "1、必须填写 2、直接填写舱位代码，多个之间用“/”隔开";
            sheet.Cells[3, 10] = "1、必须填写 2、2.5-50之间 3、直接填写政策值即可（政策值只支持小数点后1位，即不支持7.55），不支持添加％，即不支持7.5 %";
            sheet.Cells[3, 11] = "1、必须填写 2、2.5-50之间 3、直接填写政策值即可（政策值只支持小数点后1位，即不支持7.55），不支持添加％，即不支持7.5 %";
            sheet.Cells[3, 12] = "1、必须填写 2、格式为YY-MM-DD 3、开始日期小于等于截止日期";
            sheet.Cells[3, 13] = "1、必须填写 2、格式为YY-MM-DD 3、开始日期小于等于截止日期";
            sheet.Cells[3, 14] = "1、必须填写 2、格式为YY-MM-DD 3、开始日期小于等于截止日期";
            sheet.Cells[3, 15] = "1、必须填写 2、格式为YY-MM-DD 3、开始日期小于等于截止日期";
            sheet.Cells[3, 16] = "1、必须填写 2、BSP或者B2B";
            sheet.Cells[3, 17] = "1、必须填写 2、BSP或者B2B";
            sheet.Cells[3, 18] = "1、必须填写 2、填写“是”或者“否”";
            sheet.Cells[3, 19] = "1、必须填写 2、填写“是”或者“否”";
            sheet.Cells[3, 20] = "1、非必填项 2、填写下面“备注参考数据”的编号，中间以“|”隔开 3、若“备注参考数据”无数据，则说明未给当前供应商设置备注权限";

            sheet.Cells[4, 1] = "政策备注参考数据";
            sheet.Cells[5, 1] = "编号";
            sheet.Cells[5, 2] = "备注";
            //将DataTable赋值给excel
            List<PolicyRemark> list=  BPolicyMangeBLL.GetSupplyPolicyRemark(agentCode).ToList();
            for (int k = 0; k < list.Count; k++)
            {
                PolicyRemark pol = new PolicyRemark();
                pol = list[k];
                sheet.Cells[k + 6, 1] = pol.prid;
                sheet.Cells[k + 6, 2] = pol.prRemark;
                Excel.Range rang1;
                for (int t = 1; t <= 2; t++)
                {
                    rang1 = sheet.get_Range(sheet.Cells[k + 6, t], sheet.Cells[k + 6, t]);
                    rang1.Merge(System.Reflection.Missing.Value);
                    rang1.ColumnWidth = 15;
                    rang1.Borders.ColorIndex = "1";
                }
            }
            //保存excel文件
            string path = Request.MapPath(@"ExcelFile\model.xls");
            
            book.SaveCopyAs(path);

            //关闭文件
            book.Close(false, missing, missing);
            //退出excel
            app.Quit();

            Response.ContentType = "application/vnd.ms-excel";
            Response.AddHeader("Content-Disposition", "attachment; filename=model.xls;filetype=excel");
            Response.ContentEncoding = Encoding.GetEncoding("utf-8");
            Response.WriteFile(path);
            Response.Flush();

        }

/*
52            
53                    无色 = -4142,   自动 = -4105,   黑色
= 1,   褐色 = 53,   橄榄 = 52,   深绿 = 51,   深青 = 49,
54                    深蓝 =
11,   靛蓝 = 55,   灰色80 = 56,   深红 = 9,   橙色 = 46,   深黄 = 12,   绿色 =
10,
55                    青色 = 14,   蓝色 = 5,   蓝灰 = 47,   灰色50 = 16,   红色 =
3,   浅橙色 = 45,   酸橙色 = 43,
56                    海绿 = 50,   水绿色 = 42,   浅蓝 =
41,       紫罗兰 = 13,   灰色40 = 48,   粉红 = 7,
57                    金色 = 44,  
黄色 = 6,   鲜绿 = 4,   青绿 = 8,   天蓝 = 33,   梅红 = 54,   灰色25 =
15,
58                    玫瑰红 = 38,   茶色 = 40,   浅黄 = 36,   浅绿 = 35,   浅青绿 =
34,   淡蓝 = 37,   淡紫 = 39,
59                    白色 =
2
60                  */

这两行代码是将excel的输出格式为xls

 string path = Request.MapPath(@"ExcelFile\model_" + agentCode + ".xls");
            if (System.IO.File.Exists(path)) System.IO.File.Delete(path);
            Excel.XlFileFormat version = Excel.XlFileFormat.xlWorkbookNormal;//Excel 2007版本 
            book.SaveAs(path, version, Missing.Value, Missing.Value, Missing.Value, Missing.Value,Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value);