使用 Openxml sdk 合并 Excel 工作表中的单元格

Question

我正在使用 OpenXML sdk 将数据从列表导出到 Excel 工作表。数据完成后，我想在最后一行下面合并 10 行。

string templatePath = Server.MapPath("~/Content/Reports/Formate/someReport.xlsx");
string download_file_name = "Some__Report_" + Guid.NewGuid().ToString() + ".xlsx";
string newFilePath = Server.MapPath("~/Content/Reports/TempData/" + download_file_name);

System.IO.File.Copy(templatePath, newFilePath, true);

SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Open(newFilePath, true);
var sheet = spreadsheetDocument.WorkbookPart.Workbook
            .Sheets.Elements<Sheet>()
            .FirstOrDefault();

var sheetReferenceId = sheet.Id;

// Map the Id to the worksheet part
WorksheetPart worksheetPart = (WorksheetPart)spreadsheetDocument.WorkbookPart.GetPartById(sheetReferenceId);
var sheetData = worksheetPart.Worksheet.GetFirstChild<SheetData>();
uint rowNumber = 12;
string[] cellReferences = { "A", "B", "C", "D", "E" };

foreach (var item in someList)
{
    var row = sheetData.Elements<Row>().Where(r => r.RowIndex == rowNumber).FirstOrDefault();

    if (row == null)
    {
        row = new Row();
        row.RowIndex = rowNumber;
        sheetData.Append(row);
    }

    if (row != null)
    {
        for (int j = 0; j < cellReferences.Length; j++)
        {
            string cellReference = cellReferences[j] + rowNumber.ToString();

            // Find cell in row
            var cell = row.Elements<Cell>()
                .Where(c => c.CellReference == cellReference)
                .FirstOrDefault();

            if (cell == null)
            {
                cell = new Cell();
                cell.CellReference = cellReference;
                row.InsertAt(cell, j);
            }

            if (cell != null)
            {
                switch (cellReferences[j])
                {
                    case "A":

                        cell.CellValue = new CellValue(item.AssignDate.ToString());
                        cell.DataType = new EnumValue<CellValues>(CellValues.String);
                        break;
                    case "B":
                        cell.CellValue = new CellValue(item.AssetTypeName);
                        cell.DataType = new EnumValue<CellValues>(CellValues.String);
                        break;
                    case "C":
                        cell.CellValue = new CellValue(item.Model);
                        cell.DataType = new EnumValue<CellValues>(CellValues.String);
                        break;
                    case "D":
                        cell.CellValue = new CellValue(item.SubscriberNo.ToString());
                        cell.DataType = new EnumValue<CellValues>(CellValues.String);
                        break;
                    case "E":
                        cell.CellValue = new CellValue(item.IMEI);
                        cell.DataType = new EnumValue<CellValues>(CellValues.String);
                        break;

                }
            }
        }

        rowNumber++;
    }
}

//I want here to merge 10 rows below rowNumber

spreadsheetDocument.Close();
//string download_path = string.Format("{0}://{1}{2}", Request.Url.Scheme, Request.Url.Authority, Url.Content("~")) + "/Content/Reports/TempData/" + download_file_name;
this.Response.ClearContent();
this.Response.Clear();
this.Response.AddHeader("Content-Disposition", "attachment; filename=Assets_Report_" + DateTime.Now.ToShortDateString().Replace('/', '-') + ".xlsx");
this.Response.ContentType = "application/vnd.ms-excel.12";
this.Response.TransmitFile(newFilePath);
this.Response.Flush();
this.Response.End();

我已经尝试过Create Merge Cells using OpenXML 的解决方案，但它对我不起作用。 我所做的是：

Row firstRow = new Row();
firstRow.RowIndex = (UInt32)rowNumber+1;

//create a cell in C1 (the upper left most cell of the merged cells)
Cell dataCell = new Cell();
dataCell.CellReference = "A" + firstRow.RowIndex.ToString(); ;
CellValue cellValue = new CellValue();
cellValue.Text = "";
dataCell.Append(cellValue);

firstRow.AppendChild(dataCell);

sheetData.AppendChild(firstRow);
// Add a WorkbookPart to the document.
worksheetPart.Worksheet = new Worksheet(sheetData);

//create a MergeCells class to hold each MergeCell
MergeCells mergeCells = new MergeCells();

//append a MergeCell to the mergeCells for each set of merged cells
mergeCells.Append(new MergeCell() { Reference = new StringValue(""+dataCell.CellReference+":F"+(firstRow.RowIndex+10)) });

worksheetPart.Worksheet.InsertAfter(mergeCells, worksheetPart.Worksheet.Elements<SheetData>().First());

//this is the part that was missing from your code
Sheets sheets = spreadsheetDocument.WorkbookPart.Workbook.AppendChild(new Sheets());
sheets.AppendChild(new Sheet()
{
    Id = spreadsheetDocument.WorkbookPart.GetIdOfPart(spreadsheetDocument.WorkbookPart.WorksheetParts.First()),
    SheetId = 1,
    Name = "Sheet1"
});

我在这里遇到异常无法插入 OpenXmlElement “newChild”，因为它是树的一部分。

Answer 1

我尝试了Create Merge Cells using OpenXML 的解决方案，但没有 为我工作。

这是因为该解决方案是从头开始创建新文件，但您正在编辑现有文件。您不需要创建Worksheets 和Sheets 等的代码部分。您只需要合并单元格代码：

Row firstRow = new Row();
firstRow.RowIndex = (UInt32)rowNumber + 1;

//create a cell in C1 (the upper left most cell of the merged cells)
Cell dataCell = new Cell();
dataCell.CellReference = "A" + firstRow.RowIndex.ToString(); ;
CellValue cellValue = new CellValue();
cellValue.Text = "";
dataCell.Append(cellValue);

firstRow.AppendChild(dataCell);

sheetData.AppendChild(firstRow);

//create a MergeCells class to hold each MergeCell
MergeCells mergeCells = new MergeCells();

//append a MergeCell to the mergeCells for each set of merged cells
mergeCells.Append(new MergeCell() { Reference = new StringValue("" + dataCell.CellReference + ":F" + (firstRow.RowIndex + 10)) });

worksheetPart.Worksheet.InsertAfter(mergeCells, worksheetPart.Worksheet.Elements<SheetData>().First());