使用开放XML创建Excel文件

Question

我正在尝试使用Open XML创建文件，但是当尝试仅添加标题的第一行时，文件已损坏且无法打开，有人可以告诉我我在这里做错了吗？

using (SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Create("C:\\testpdfs\\mytest.xlsx", SpreadsheetDocumentType.Workbook))
            {
                // Add a WorkbookPart to the document.
                WorkbookPart workbookpart = spreadsheetDocument.AddWorkbookPart();
                workbookpart.Workbook = new Workbook();

                // Add a WorksheetPart to the WorkbookPart.
                WorksheetPart worksheetPart = workbookpart.AddNewPart<WorksheetPart>();
                worksheetPart.Worksheet = new Worksheet(new SheetData());

                // Add Sheets to the Workbook.
                Sheets sheets = spreadsheetDocument.WorkbookPart.Workbook.
                    AppendChild<Sheets>(new Sheets());

                // Append a new worksheet and associate it with the workbook.
                Sheet sheet = new Sheet()
                {
                    Id = spreadsheetDocument.WorkbookPart.
                    GetIdOfPart(worksheetPart),
                    SheetId = 1,
                    Name = ViewBag.Title
                };

                Row row = new Row() { RowIndex = 1 };
                Cell header1 = new Cell() { CellReference = "A1", CellValue = new CellValue("Interval Period Timestamp") };
                row.Append(header1);
                Cell header2 = new Cell() { CellReference = "A2", CellValue = new CellValue("Settlement Interval") };
                row.Append(header2);
                Cell header3 = new Cell() { CellReference = "A3", CellValue = new CellValue("Aggregated Consumption Factor") };
                row.Append(header3);
                Cell header4 = new Cell() { CellReference = "A4", CellValue = new CellValue("Loss Adjusted Aggregated Consumption") };
                row.Append(header4);


                sheet.Append(row);

                sheets.Append(sheet);


                //sheet.Append(row);


                workbookpart.Workbook.Save();

                // Close the document.
                spreadsheetDocument.Close();
                return View();

            }

Answer 1

您在这里有几个问题。

首先，您要添加row，Sheet但需要将其添加到中SheetData。最简单的方法是保留对SheetData对象的引用，以便以后使用：

SheetData sheetData = new SheetData();
worksheetPart.Worksheet = new Worksheet(sheetData);
...
sheetData.Append(row);

其次，您需要显式地为每个单元格指定一种数据类型，因为如果没有给出任何数据类型，则默认值为number：

Cell header1 = new Cell() { CellReference = "A1", CellValue = new CellValue("Interval Period Timestamp"), DataType = CellValues.String };

最后，您的单元格引用不太正确。您将所有内容添加到一行，但添加了第1至4行（A1-A4）的引用。给定单元格在您的代码中被称为“标头”，我猜您实际上需要的是单元格A1-D1中的值，在这种情况下，您只需要更新CellReference值即可。如果您确实需要A1-A4中的值，则需要将每个单元格添加到新行。

完整的代码清单（假设您要使用单元格A1-D1）是：

using (SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Create("C:\\testpdfs\\mytest.xlsx", SpreadsheetDocumentType.Workbook))
{
    // Add a WorkbookPart to the document.
    WorkbookPart workbookpart = spreadsheetDocument.AddWorkbookPart();
    workbookpart.Workbook = new Workbook();

    // Add a WorksheetPart to the WorkbookPart.
    WorksheetPart worksheetPart = workbookpart.AddNewPart<WorksheetPart>();
    SheetData sheetData = new SheetData();
    worksheetPart.Worksheet = new Worksheet(sheetData);

    // Add Sheets to the Workbook.
    Sheets sheets = spreadsheetDocument.WorkbookPart.Workbook.
        AppendChild<Sheets>(new Sheets());

    // Append a new worksheet and associate it with the workbook.
    Sheet sheet = new Sheet()
    {
        Id = spreadsheetDocument.WorkbookPart.
        GetIdOfPart(worksheetPart),
        SheetId = 1,
        Name = ViewBag.Title
    };

    Row row = new Row() { RowIndex = 1 };
    Cell header1 = new Cell() { CellReference = "A1", CellValue = new CellValue("Interval Period Timestamp"), DataType = CellValues.String };
    row.Append(header1);
    Cell header2 = new Cell() { CellReference = "B1", CellValue = new CellValue("Settlement Interval"), DataType = CellValues.String };
    row.Append(header2);
    Cell header3 = new Cell() { CellReference = "C1", CellValue = new CellValue("Aggregated Consumption Factor"), DataType = CellValues.String };
    row.Append(header3);
    Cell header4 = new Cell() { CellReference = "D1", CellValue = new CellValue("Loss Adjusted Aggregated Consumption"), DataType = CellValues.String };
    row.Append(header4);

    sheetData.Append(row);

    sheets.Append(sheet);

    workbookpart.Workbook.Save();

    // Close the document.
    spreadsheetDocument.Close();
    return View();

}