为多个Excel工作表使用相同的模板

Question

我正在开发ASP.NET应用程序，其中有一个以.xls格式导出​​实现的功能。每个实现都可以有更多的项目，因此每个项目都应该在excel中有单独的表。我有excel模板，应该用于制作excel表。问题是：此代码创建一个空模板，然后为不使用模板的项目创建工作表。选择的时间段内有列，周，行动（在给定时间段内完成的事情），花费的时间和细节+工作描述。我使用的是ClosedXML。我废弃了不必要的LINQ和单元格合并。

public FileContentResult Export(ExportRealizationViewModel newModel)
    {
        try
        {
            LINQ for employee whose realization is exported;
            LINQ for projects in realizations;

            XLWorkbook theWorkBook = new XLWorkbook(Server.MapPath(@"../Template.xlsx"));

            foreach (var project in projects)
            {

                var wsheet = theWorkBook.Worksheets.Add(project);
            }

            using (theWorkBook)
            {
                foreach (IXLWorksheet ws in theWorkBook.Worksheets)
                {
                    LINQ for date period of realizations;
                    LINQ for hours column in excel table;
                    LINQ for actions done during time period;
                    LINQ for action details;
                    LINQ for description of work;

                    int num = date.Count();
                    double summ = 0;
                    int count;
                    int cell;
                    int col;
                    double total;
                    StringBuilder sb = new StringBuilder();

                    // Cell merging for weeks column...

                    // Date column
                    ... code for filling date column..

                    // Week column
                    ... code for filling week column and cell formatting...

                    //Action column
                    ... code for filling action column and cell formatting...
                    // Hours column (weekly and total)
                    ... code for filling hours column and cell formatting...

                    //Remark column(details + description)
                    ... code for filling remark column and cell formatting...
                }
                MemoryStream stream = new MemoryStream();
                theWorkBook.SaveAs(stream);
                byte[] fileBytes = stream.ToArray();
                return File(fileBytes, "application/vnd.ms-excel", "NewFile.xls");
            }
        }
        catch (Exception)
        {
            TempData["Error"] = "Error";
            throw;
        }
    }