// Create a new workbook Workbook workbook = new Workbook(); IWorksheet worksheet = workbook.getWorksheets().get(0); // Prepare data worksheet.getRange("A1:A3") .setValue(new String[] { "Render Excel ranges inside PDF in .NET Core", "Control pagination when printing Excel document to PDF in .NET Core (Support Team)", "How to format Pivot table styles in .NET Core (Support Team)" }); // Replace ".NET Core" with ".NET 5" worksheet.getUsedRange().replace(".NET Core", ".NET 5"); // Save to an excel file workbook.save("ReplaceBasicUsage.xlsx");