使用 openXML 2.0 保存 Excel 文档时文件已损坏且无法打开

Question

我正在尝试保存从另一个电子表格传递到此方法的行，并将此电子表格保存为电子邮件的附件。电子邮件发送正常，但附件无法打开，并出现错误“文件已损坏且无法打开”。我尝试将文件保存到 c: 上的 filstream，但遇到了相同的错误。这段代码有什么问题？

 public static void CreateErrorMailWithExcelAttachment(List<Row> rows)
        {
            if (rows.Count > 0)
            {
                using (MemoryStream stream = new MemoryStream())
                {
                    //Create a spreadsheet document by supplying the file name.
                    using (SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Create(stream, SpreadsheetDocumentType.Workbook))
                    {

                        // Add a WorkbookPart to the document.
                        spreadsheetDocument.AddWorkbookPart();
                        spreadsheetDocument.WorkbookPart.Workbook = new Workbook();

                        spreadsheetDocument.WorkbookPart.AddNewPart<WorksheetPart>();
                        spreadsheetDocument.WorkbookPart.WorksheetParts.First().Worksheet = new Worksheet();

                        // create sheet data
                        spreadsheetDocument.WorkbookPart.WorksheetParts.First().Worksheet.AppendChild(new SheetData());

                        // Add Rows to the Sheet.
                        foreach (Row row in rows)
                        {
                            spreadsheetDocument.WorkbookPart.WorksheetParts.First().Worksheet.First().AppendChild(new Row(row.OuterXml));
                        }

                        spreadsheetDocument.WorkbookPart.Workbook.Save();
                    }

                    Dictionary<string, byte[]> attachments = new Dictionary<string, byte[]>();
                    attachments.Add("Book1.xlsx", stream.ToArray());

                    SendEmail
                        (
                            acsis.Common.AppContext.Configuration.GetValue(Constants.ApplicationName, "SMTPServer"),
                            acsis.Common.AppContext.Configuration.GetValue(Constants.ApplicationName, "SMTPUser"),
                            acsis.Common.AppContext.Configuration.GetValue(Constants.ApplicationName, "SMTPPass"),
                            "[email protected]",
                            acsis.Common.AppContext.Configuration.GetValue(Constants.ApplicationName, "InstitutionalDatabaseAdminEmail"),
                            "Failed rows from bulk investor spreadsheet upload",
                            "Test",
                            false,
                            attachments
                        );
                }
            }
        }

Answer 1

在 WorkbookPart 中，您需要添加一个元素来指定工作簿中的每个工作表。准确地写出您需要对代码进行的更改是很棘手的，因为您有很多未分配的创建者，但基本上您需要：

workbook1.AddNamespaceDeclaration("r","http://schemas.openxmlformats.org/officeDocument/2006/relationships");
Sheets sheets1 = new Sheets();
Sheet sheet1 = new Sheet(){ Name = "Sheet1", SheetId = (UInt32Value)1U, Id = "R71b609d3bfb541ee" };
sheets1.Append(sheet1);
workbook1.Append(sheets1);
workbookPart1.Workbook = workbook1;

您必须获取 relId 标识符并将其放在那里，但之后您应该就可以了去。

希望有帮助！