Trim Leading Blank Rows and Columns while exporting spreadsheets to CSV format with Node.js via C++

Possible Usage Scenarios

Sometimes, your Excel or CSV file has leading blank columns or rows. For example, consider this line

 ,,,data1,data2

Here the first three cells or columns are blank. When you open such a CSV file in Microsoft Excel, then Microsoft Excel discards these leading blank rows and columns.

By default, Aspose.Cells for Node.js via C++ does not discard leading blank columns and rows on saving but if you want to remove them just like Microsoft Excel does, then Aspose.Cells provides TxtSaveOptions.getTrimLeadingBlankRowAndColumn() property. Please set it to true and then all the leading blank rows and columns will be discarded on saving.

Prior to the release of Aspose.Cells for Node.js via C++ 20.4, the default value of TxtSaveOptions.getTrimLeadingBlankRowAndColumn() was false. Since the 20.4 release, the default value of TxtSaveOptions.getTrimLeadingBlankRowAndColumn() is true.

Trim Leading Blank Rows and Columns while exporting spreadsheets to CSV format

The following sample code loads the source excel file which has two leading blank columns. It first saves the excel file in CSV format without any changes and then it sets TxtSaveOptions.getTrimLeadingBlankRowAndColumn() property to true and saves it again. The screenshot shows the source excel file, output CSV file without trimming, and the output CSV file with trimming.

Sample Code

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

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

// Load source workbook
const wb = new AsposeCells.Workbook(path.join(dataDir, "sampleTrimBlankColumns.xlsx"));

// Save in csv format
wb.save(path.join(dataDir, "outputWithoutTrimBlankColumns.csv"), AsposeCells.SaveFormat.Csv);

// Now save again with TrimLeadingBlankRowAndColumn as true
const opts = new AsposeCells.TxtSaveOptions();
opts.setTrimLeadingBlankRowAndColumn(true);

// Save in csv format
wb.save(path.join(dataDir, "outputTrimBlankColumns.csv"), opts);