Detect Merged Cells in a Worksheet with Node.js via C++

This article provides information on how to get merged cell areas in a worksheet.

Aspose.Cells for Node.js via C++ allows you to get merged cell areas in a worksheet. You can unmerge (split) them too. This article shows the simplest code using Aspose.Cells API to perform the task.

The component provides the Cells.getMergedAreas() method which can get all merged cells. The following code sample shows you how to detect merged cells in a worksheet.

const path = require("path");
const AsposeCells = require("aspose.cells.node");

// The path to the documents directory.
const dataDir = path.join(__dirname, "data");
const filePath = path.join(dataDir, "SampleInput.xlsx");

// Instantiate a new Workbook
// Open an existing excel file
const wkBook = new AsposeCells.Workbook(filePath);
// Get a worksheet in the workbook
const wkSheet = wkBook.getWorksheets().get("Sheet2");
// Clear its contents
wkSheet.getCells().clear();

// Get merged areas
const areas = wkSheet.getCells().getMergedAreas();

// Check if areas is null or not
if (!areas || areas.length === 0) {
console.warn("No merged areas to unmerge.");
return;
}

// Define some variables
let frow, fcol, erow, ecol, trows, tcols;
// Loop through the arraylist and get each cellarea
// To unmerge it
for (let i = 0; i < areas.length; i++) {
frow = areas[i].startRow;
fcol = areas[i].startColumn;
erow = areas[i].endRow;
ecol = areas[i].endColumn;

trows = erow - frow + 1;
tcols = ecol - fcol + 1;
wkSheet.getCells().unMerge(frow, fcol, trows, tcols);
}

const outputFilePath = path.join(dataDir, "MergeTrial.out.xlsx");
// Save the excel file
wkBook.save(outputFilePath);