Merge Excel Files Online | Combine Excel Workbook Spreadsheets in C# or Java

merge-excel-xlsx.cs

// Load the source XLSX file
using (Merger merger = new Merger("sample1.xlsx"))
{
    // Add another XLSX file to merge
    merger.Join("sample2.xlsx");
 
    // Merge XLSX files and save result
    merger.Save("merged.xlsx");
}

merge-excel-xlsx.java

// Load the source XLSX file
Merger merger = new Merger("sample1.xlsx")

// Add another XLSX file to merge
merger.join("sample2.xlsx");

// Merge XLSX files and save result
merger.save("merged.xlsx");