使用 Interop 在 Excel.Range 中忽略并覆盖空白单元格

Blank cell is ignored and overwritten in Excel.Range using Interop

在 excel 文件中有数据,如下所示,其中第 1 行和第 2 行被视为 header 行,当根据第一列拆分此特定文件时,将复制这些行。

拆分后的文件如下所示:

问题 是列 D 的值被复制到错误的列,在这种情况下是 C。

我想我需要检查单元格是否为空或为空,并在写入期间将 blank/null 值放入新文件。问题是如何将其合并到我的以下代码中?

    private FileEntity GetFileObject(Excel.Range range)
    {
        FileEntity fileEntity = new FileEntity();
        fileEntity.RowValues = new List<RowEntity>();

        for (int rowCount = 1; rowCount <= range.Rows.Count; rowCount++)
        {
            RowEntity rowEntity = new RowEntity();
            rowEntity.ColumnValues = new List<string>();

            for (int columnCount = 1; columnCount <= range.Columns.Count; columnCount++)
            {
                if ((range.Cells[rowCount, columnCount] as Excel.Range).Value != null)
                {
                    rowEntity.ColumnValues.Add((range.Cells[rowCount, columnCount] as Excel.Range).Value.ToString());
                }
            }
            fileEntity.RowValues.Add(rowEntity);
        }
        return fileEntity;
    }

这是因为文档结构具有避免浪费的内在效率 space。您必须检查单元格中的引用(A1、B1 等),然后您才能知道它来自哪里以及如何处理它。

      int rowIdx = 0;

      foreach (Row r in sheetData.Elements<Row>().Skip(1))
      {
        rowIdx++;
        IEnumerable<Cell> thisRow = r.Elements<Cell>();

        foreach (var c in thisRow)
        {
          //This will tell you what cell you are looking at (A2, D14, whatever..)
          string cellRef = c.CellReference.ToString().Substring(0, 1);

          switch (cellRef)
          {
            case "A": 
              //do something...
              break;
            case "B": 
              //do something...
              break;
            case "C": 
              //do something...
              break;
        ....ETC.......

找到解决方案:

                if ((range.Cells[rowCount, columnCount] as Excel.Range).Value != null)
                {
                    rowEntity.ColumnValues.Add((range.Cells[rowCount, columnCount] as Excel.Range).Value.ToString());
                }
                else
                    rowEntity.ColumnValues.Add(""); //just add this line. keeps the blank cell as created with empty string