使用 open XML 创建 excel 文件

Question

我正在尝试使用 Open XML 创建一个文件，但是在尝试仅添加第一行标题时，该文件已损坏并且我无法打开，谁能告诉我我在这里做错了什么？

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

这里有一些问题。

首先，您将row 添加到Sheet，但它需要添加到SheetData。最简单的方法是保留对SheetData 对象的引用，以便我们以后可以使用它：

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

其次，您需要为每个单元格显式指定数据类型，因为如果未指定数据类型，则默认为数字：

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

最后，您的单元格引用并不完全正确。您将所有内容添加到一行，但添加第 1 到第 4 行 (A1-A4) 的引用。鉴于单元格在您的代码中被称为“标题”，我猜您实际上想要单元格 A1-D1 中的值，在这种情况下，您只需更新 CellReference 值。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（假设您想要单元格 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();

}