Get Max Column Index in Row and Max Row Index in Column

Possible Usage Scenarios

When you only need to manipulate some data on the rows or columns, you need to know the data range of rows and columns. Aspose.Cells for JavaScript via C++ offers this feature. To obtain the maximum column index on a row, you can obtain the Row.lastCell and Row.lastDataCell methods, and then use the Cell.column method to obtain the maximum column index and maximum data column index. But in order to obtain the maximum row index and maximum row data index on a column, you need to create a range on the column, then traverse the range to find the last cell, and finally call the Cell.row method on the cell.

Aspose.Cells for JavaScript via C++ provides the following properties and methods to help you achieve your goals.

Get Max Column Index in Row and Max Row Index in Column

This example shows how to:

  1. Load the sample file.
  2. Get the row that needs to get the maximum column index and maximum data column index.
  3. Call the Cell.column method on the cell.
  4. Create a range based on column.
  5. Get iterator and traverse range.
  6. Call the Cell.row method on the cell.
<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
        <meta charset="utf-8" />
        <style>
            body { font-family: Arial, sans-serif; margin: 20px; }
            #result pre { background: #f4f4f4; padding: 10px; }
            #downloadLink { display: none; margin-top: 10px; display: inline-block; }
        </style>
    </head>
    <body>
        <h1>Get Max Row/Column Example</h1>
        <input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
        <button id="runExample">Run Example</button>
        <a id="downloadLink">Download Result</a>
        <div id="result"></div>
    </body>

    <script src="aspose.cells.js.min.js"></script>
    <script type="text/javascript">
        const { Workbook, SaveFormat, Worksheet, Cell } = AsposeCells;
        
        AsposeCells.onReady({
            license: "/lic/aspose.cells.enc",
            fontPath: "/fonts/",
            fontList: [
                "arial.ttf",
                "NotoSansSC-Regular.ttf"
            ]
        }).then(() => {
            console.log("Aspose.Cells initialized");
        });

        document.getElementById('runExample').addEventListener('click', async () => {
            const fileInput = document.getElementById('fileInput');
            const resultDiv = document.getElementById('result');
            resultDiv.innerHTML = '';

            if (!fileInput.files.length) {
                resultDiv.innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
                return;
            }

            const file = fileInput.files[0];
            const arrayBuffer = await file.arrayBuffer();

            // Instantiating a Workbook object by opening the uploaded file
            const workbook = new Workbook(new Uint8Array(arrayBuffer));

            // Accessing the first worksheet in the Excel file
            const sheet = workbook.worksheets.get(0);

            // Accessing cells collection
            const cells = sheet.cells;

            // Check row at index 1
            const row = cells.checkRow(1);
            const outputLines = [];

            if (row != null) {
                // get Maximum column index of Row which contains data or style.
                outputLines.push("Max column index in row: " + row.lastCell.column);

                // get Maximum column index of Row which contains data.
                outputLines.push("Max data column index in row: " + row.lastDataCell.column);
            } else {
                outputLines.push("Row 1 is empty (checkRow returned null).");
            }

            // create the range of column B (index 1)
            const columnRange = cells.createRange(1, 1, true);

            var max_row_index  = cells.maxRow + 1;
            var maxRow = 0;
            var maxDataRow = 0;

            for (let row_index = 0; row_index < max_row_index; row_index++) {
                var curr_cell = cells.get(row_index, 1);

                if (curr_cell) {
                    if (curr_cell.stringValue) {
                        maxDataRow = curr_cell.row;
                    }

                    if (curr_cell.stringValue || curr_cell.hasCustomStyle) {
                        maxRow = curr_cell.row;
                    }
                }
            }

            // Maximum row index of Column which contains data or style.
            outputLines.push("Max row index in Column: " + maxRow);

            // Maximum row index of Column which contains data.
            outputLines.push("Max data row index in Column: " + maxDataRow);

            resultDiv.innerHTML = '<pre>' + outputLines.join('\n') + '</pre>';
        });
    </script>
</html>
Preserve Single Quote Prefix of Cell Value or Range Creating Subtotals