今天在工作中碰到同事用了一种新型的方式导入excel，在此做个学习记录。

插件：Aspose.Cells

第一步:准备好导出的模板，例子：

C#代码：

#region 验证数据

            if (model == null)

            {

                throw new FriendlyException("无该月结单！");

            }

            var templatePath = @"Template\trade\Cecsc2bHN\分包分供月度结算审批表.xlsx"; ;

            var resFileName = string.Empty;

            var bigTitle = string.Empty;

            var barCodeStr = string.Empty;

            if (string.IsNullOrEmpty(templatePath) || !File.Exists(templatePath))

            {

                throw new FriendlyException("未找到模板文件！");

            }

            #endregion

            #region 初始化模板文件

            var wk = new Workbook(templatePath);

            var designer = new WorkbookDesigner(wk);

            #endregion

            #region 数据重构造

            // 工程形象进度

            #endregion

            #region 构造头部信息

            var topInfo = new Dictionary<string, object>

            {

                { "Title", bigTitle },

                { "ProjectName", model.ProjectName },

                { "Code", barCodeStr }

            };

            #endregion

            MonthSettlementInfo monthInfo = new MonthSettlementInfo()

            {

                CurrentInContractSettlementAmount = 56.32M,

                TerminalInContractSettlementAmount = 123.32M,

                CurrentOutContractSettlementAmount = 6.32M,

                TerminalOutContractSettlementAmount = 5.32M,

                CurrentDeductionSettlementAmount = 12.32M,

                TerminalDeductionSettlementAmount = 26.32M,

                CurrentInContractSafeAmount = 2.32M,

                TerminalInContractSafeAmount = 1.32M,

                CurrentOutContractSafeAmount = 6.32M,

                TerminalOutContractSafeAmount = 8.32M,

                CurrentDeductionSafeAmount = 4.32M,

                TerminalDeductionSafeAmount = 3.32M,

            };

            //形象进度描述

            List<TradeSettleReportProjectProgressItemModel> ProjectProgressList = new List<TradeSettleReportProjectProgressItemModel>();

            for (int i = 0; i < 3; i++)

            {

                TradeSettleReportProjectProgressItemModel Progressmodel = new TradeSettleReportProjectProgressItemModel()

                {

                    ConstractArea = "测试水水水水水水" + i,

                    Remark = "测试模拟的备注" + i,

                    ProgressDesc = "测试撒子怕发送所属" + i,

                    ConstractSite = "场地" + i

                };

                ProjectProgressList.Add(Progressmodel);

            }

            #region 工程名称

  
            //绑定数据到excel中
            //designer.SetDataSource("绑定的到excle的变量名"，"对应的值")

            designer.SetDataSource("ProgressItem", ProjectProgressList);    //list可以循环绑定  绑定的例子在下面。

            designer.SetDataSource("ProjectName", model.ProjectName);

            designer.SetDataSource("ContractName", model.ContractName);

            designer.SetDataSource("ContractCode", model.ContractCode);

            designer.SetDataSource("MonthSettlementNo", model.MonthSettlementNo);

            designer.SetDataSource("ContractingUnit", model.ContractingUnit);

            designer.SetDataSource("SettlementCode", model.SettlementCode);

            designer.SetDataSource("EnterpriseName", model.EnterpriseName);

            designer.SetDataSource("ThirdPartyName", model.ThirdPartyName);

            designer.SetDataSource("SettlementMonth", model.SettlementMonth);

            designer.SetDataSource("TotalContractAmount", model.TotalContractAmount);

            designer.SetDataSource("SettlementAmountCapitalize", model.SettlementAmountCapitalize);

            #endregion

            #endregion

            #region 尾部

            #endregion

            designer.Process();

            wk.CalculateFormula(); 

            #region 重新计算行高

            var startRow = 9;

            var endRow = startRow;

            #endregion

            #region 导出文件

            var fileName = $"{model.SettlementMonth.ToString("yyyy年MM月")}{resFileName}.xlsx";

            using (var file = new MemoryStream())

            {

                wk.Save(file, SaveFormat.Xlsx);

                wk.Dispose();

                return new KeyValuePair<string, byte[]>(fileName, file.ToArray());

            }

            #endregion

此种当时的重点是Excel模板的数据绑定：

第一种：单个值的绑定

第二种：列表值的循环绑定

完整代码

Service层：

public KeyValuePair<string, byte[]> ExportSettle(TradeSettleReportModel model)

        {

            #region 验证数据

            if (model == null)

            {

                throw new FriendlyException("无该月结单！");

            }

            var templatePath = @"Template\trade\Cecsc2bHN\分包分供月度结算审批表.xlsx"; ;

            var resFileName = string.Empty;

            var bigTitle = string.Empty;

            var barCodeStr = string.Empty;

            if (string.IsNullOrEmpty(templatePath) || !File.Exists(templatePath))

            {

                throw new FriendlyException("未找到模板文件！");

            }

            #endregion

            #region 初始化模板文件

            var wk = new Workbook(templatePath);

            var designer = new WorkbookDesigner(wk);

            #endregion

            #region 数据重构造

            // 工程形象进度

            #endregion

            #region 构造头部信息

            var topInfo = new Dictionary<string, object>

            {

                { "Title", bigTitle },

                { "ProjectName", model.ProjectName },

                { "Code", barCodeStr }

            };

            #endregion

            MonthSettlementInfo monthInfo = new MonthSettlementInfo()

            {

                CurrentInContractSettlementAmount = 56.32M,

                TerminalInContractSettlementAmount = 123.32M,

                CurrentOutContractSettlementAmount = 6.32M,

                TerminalOutContractSettlementAmount = 5.32M,

                CurrentDeductionSettlementAmount = 12.32M,

                TerminalDeductionSettlementAmount = 26.32M,

                CurrentInContractSafeAmount = 2.32M,

                TerminalInContractSafeAmount = 1.32M,

                CurrentOutContractSafeAmount = 6.32M,

                TerminalOutContractSafeAmount = 8.32M,

                CurrentDeductionSafeAmount = 4.32M,

                TerminalDeductionSafeAmount = 3.32M,

            };

            //审批记录

            List<TradeSettleReportApprovalCommentsModel> approveModelList = new List<TradeSettleReportApprovalCommentsModel>();

            for (int i = 0; i < 2; i++)

            {

                TradeSettleReportApprovalCommentsModel approveModel = new TradeSettleReportApprovalCommentsModel()

                {

                    Approver = "admin" + i,

                    Comments = "审批通过" + i,

                    NodeName = "测试模板" + i,

                    Seq = i

                };

                approveModelList.Add(approveModel);

            }

            //形象进度描述

            List<TradeSettleReportProjectProgressItemModel> ProjectProgressList = new List<TradeSettleReportProjectProgressItemModel>();

            for (int i = 0; i < 3; i++)

            {

                TradeSettleReportProjectProgressItemModel Progressmodel = new TradeSettleReportProjectProgressItemModel()

                {

                    ConstractArea = "测试水水水水水水" + i,

                    Remark = "测试模拟的备注" + i,

                    ProgressDesc = "测试撒子怕发送所属" + i,

                    ConstractSite = "场地" + i

                };

                ProjectProgressList.Add(Progressmodel);

            }

            #region 工程名称

            designer.SetDataSource("CurrentInContractSettlementAmount", monthInfo.CurrentInContractSettlementAmount);

            designer.SetDataSource("TerminalInContractSettlementAmount", monthInfo.TerminalInContractSettlementAmount);

            designer.SetDataSource("CurrentOutContractSettlementAmount", monthInfo.CurrentOutContractSettlementAmount);

            designer.SetDataSource("TerminalOutContractSettlementAmount", monthInfo.TerminalOutContractSettlementAmount);

            designer.SetDataSource("CurrentDeductionSettlementAmount", monthInfo.CurrentDeductionSettlementAmount);

            designer.SetDataSource("TerminalDeductionSettlementAmount", monthInfo.TerminalDeductionSettlementAmount);

            designer.SetDataSource("CurrentInContractSafeAmount", monthInfo.CurrentInContractSafeAmount);

            designer.SetDataSource("TerminalInContractSafeAmount", monthInfo.TerminalInContractSafeAmount);

            designer.SetDataSource("CurrentOutContractSafeAmount", monthInfo.CurrentOutContractSafeAmount);

            designer.SetDataSource("TerminalOutContractSafeAmount", monthInfo.TerminalOutContractSafeAmount);

            designer.SetDataSource("CurrentDeductionSafeAmount", monthInfo.CurrentDeductionSafeAmount);

            designer.SetDataSource("TerminalDeductionSafeAmount", monthInfo.TerminalDeductionSafeAmount);

            designer.SetDataSource("DetailItem", approveModelList);

            designer.SetDataSource("ProgressItem", ProjectProgressList);

            designer.SetDataSource("ProjectName", model.ProjectName);

            designer.SetDataSource("ContractName", model.ContractName);

            designer.SetDataSource("ContractCode", model.ContractCode);

            designer.SetDataSource("MonthSettlementNo", model.MonthSettlementNo);

            designer.SetDataSource("ContractingUnit", model.ContractingUnit);

            designer.SetDataSource("SettlementCode", model.SettlementCode);

            designer.SetDataSource("EnterpriseName", model.EnterpriseName);

            designer.SetDataSource("ThirdPartyName", model.ThirdPartyName);

            designer.SetDataSource("SettlementMonth", model.SettlementMonth);

            designer.SetDataSource("TotalContractAmount", model.TotalContractAmount);

            designer.SetDataSource("SettlementAmountCapitalize", model.SettlementAmountCapitalize);

            #endregion

            #region 预算编号

            //var _dic = this.GetLaborProSettleInfo(exportDataSource);

            //foreach (var item in _dic)

            //{

            //    designer.SetDataSource(item.Key, item.Value);

            //}

            #endregion

            #region 写入数据

            //foreach (var keyValuePair in topInfo)

            //{

            //    designer.SetDataSource(keyValuePair.Key, keyValuePair.Value);

            //}

            //designer.SetDataSource("ProjectProgress", exportDataSource.ProjectProgressItems);

            //designer.SetDataSource("MonthEstimate", exportDataSource.MonthEstimateOutputs);

            #region 表1

            //

            Dictionary<string, decimal> dic = new Dictionary<string, decimal>();

            if (dic != null)

            {

                foreach (var item in dic)

                {

                    designer.SetDataSource(item.Key, item.Value);

                }

            }

            #endregion

            #endregion

            #region 尾部

            #endregion

            #region 删除模板sheet

            //wk.Worksheets.RemoveAt(wk.Worksheets["表2"].Index);

            //wk.Worksheets.RemoveAt(wk.Worksheets["表3"].Index);

            designer.Process();

            wk.CalculateFormula();

            #endregion

            #region 插入条形码

            //var barCode = BarCodeGenerator.GetBarCodePNG(barCodeStr);

            //var barCode = BarCodeGenerator.WriteQRCodeImg(barCodeStr);

            //wk.Worksheets[0].Pictures.Add(0, 0, 1, 1, new MemoryStream(barCode));

            //wk.Worksheets[0].Pictures[0].Width = 60;

            //wk.Worksheets[0].Pictures[0].Width = 60;

            #endregion

            #region 重新计算行高

            var startRow = 9;

            var endRow = startRow;

            #endregion

            #region 导出文件

            var fileName = $"{model.SettlementMonth.ToString("yyyy年MM月")}{resFileName}.xlsx";

            using (var file = new MemoryStream())

            {

                wk.Save(file, SaveFormat.Xlsx);

                wk.Dispose();

                return new KeyValuePair<string, byte[]>(fileName, file.ToArray());

            }

            #endregion

        }

Interface层：

KeyValuePair<string, byte[]> ExportSettle(TradeSettleReportModel model);

Controller层：

        [AllowAnonymous]

        [HttpPost("Export")]

        public async Task<IActionResult> Export()

        {

            TradeSettleReportModel model = new TradeSettleReportModel()

            {

                ProjectName = "测刷",

                ContractName = "测试合同名称",

                ContractCode = "0010101012E",

                MonthSettlementNo = "0010101012E",

                ContractingUnit = "重庆市",

                SettlementCode = "EW2Z4523",

                EnterpriseName = "WZQ我在钱钱钱",

                ThirdPartyName = "第三方地中四年",

                SettlementMonth = DateTime.Now,

                SettlementAmountCapitalize = "壹拾贰万叁仟壹佰贰拾叁元贰角伍分",

            };

            var result = await Task.Run(() => tradeSettleCommonService.ExportSettle(model));

            return File(result.Value, "application/octet-stream", result.Key);

        }

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