在 openXML 中添加单元格和行

Question

我已经预先定义了 excel 格式，我需要将数据传递给 excel。我能够获得特定的工作表。但不知道如何将数据传递给单元格。

var excelDocument = new ExcelDocument();
var fileName = Guid.NewGuid();
string filePath = HttpContext.Current.Server.MapPath("~/Uploads/TemplateFiles/test.xlsx");

using (SpreadsheetDocument document =
       SpreadsheetDocument.Open(filePath, false))
{
       WorkbookPart workbookPart = document.WorkbookPart;
       Workbook workbook = document.WorkbookPart.Workbook;
       string sheetName = workbookPart.Workbook.Descendants<Sheet>().ElementAt(1).Name;
       IEnumerable<Sheet> sheets = document.WorkbookPart.Workbook.Descendants<Sheet>().Where(s => s.Name == "Census Template for Import");
       if (sheets.Count() == 0)
       {
              // The specified worksheet does not exist.
              return null;
       }
       WorksheetPart worksheetPart = (WorksheetPart)document.WorkbookPart.GetPartById(sheets.First().Id);
       SheetData sheetData = worksheetPart.Worksheet.GetFirstChild<SheetData>();
       var excelRows = sheetData.Descendants<DocumentFormat.OpenXml.Spreadsheet.Row>().ToList();
       int rowindex = 10;
       foreach (var item in census)
       {
              //how to write the data in cell
              rowindex++;
       }

       worksheetPart.Worksheet.Save();
       workbookPart.Workbook.Save();
       document.Close();
       //worksheetPart.Worksheet.Save();
 }
 return filePath;

Answer 1

这是一种获取单元格或添加新单元格的方法，如果单元格不存在，当您知道行和列索引时。

注意：

• rowIndex 和 columnIndex 应该从 1 开始
• 物业RowIndex一的Row应创建行的过程中被初始化
• 物业CellReference一的Cell应创建细胞的过程中被初始化

如果RowIndex或CellReference为空，则将抛出 NullReferenceException。

private Cell InsertCell(uint rowIndex, uint columnIndex, Worksheet worksheet)
{
    Row row = null;
    var sheetData = worksheet.GetFirstChild<SheetData>();

    // Check if the worksheet contains a row with the specified row index.
    row = sheetData.Elements<Row>().FirstOrDefault(r => r.RowIndex == rowIndex);
    if (row == null)
    {
        row = new Row() { RowIndex = rowIndex };
        sheetData.Append(row);
    }

    // Convert column index to column name for cell reference.
    var columnName = GetExcelColumnName(columnIndex);
    var cellReference = columnName + rowIndex;      // e.g. A1

    // Check if the row contains a cell with the specified column name.
    var cell = row.Elements<Cell>()
               .FirstOrDefault(c => c.CellReference.Value == cellReference);
    if (cell == null)
    {
        cell = new Cell() { CellReference = cellReference };
        if (row.ChildElements.Count < columnIndex)
            row.AppendChild(cell);
        else
            row.InsertAt(cell, (int)columnIndex);
    }

    return cell;
}

在这里你会找到GetExcelColumnName()方法的代码。

Answer 2

我遇到了与您相同的问题，这篇文章如何：将文本插入电子表格文档的单元格中 (Open XML SDK)。我想您需要将一个新的 Cell 对象插入到工作表中，然后将指定的数据（假设它是一个字符串或它已经被转换为字符串）插入到该单元格中。