static void Main(string[] args) { ExcelPackage.LicenseContext = LicenseContext.NonCommercial; Console.WriteLine("SpreadsheetExtensions.EPPlus.SampleConsoleApp"); var file = Path.Combine(Directory.GetCurrentDirectory(), "sample_epplus.xlsx"); if (!File.Exists(file)) { Console.WriteLine($"The file '{file}' does not exists"); return; } using var package = new ExcelPackage(new FileInfo(file)); using var workbook = package.Workbook; using var worksheet = workbook.Worksheets[0]; worksheet.Write(1, 1, 5, 5, "SAMPLE TEXT") .Merge(true) .SetFontBold(true) .SetFontItalic(true) .SetFontUnderline(true) .SetBorderBottom(new SpreadsheetBorder { Style = SpreadsheetBorderStyle.Thick, Color = new SpreadsheetColor(255, 0, 0, 255) }) .SetBorderRight(new SpreadsheetBorder { Style = SpreadsheetBorderStyle.Dotted, Color = SpreadsheetColor.FromDotNetColor(System.Drawing.Color.Green) }) .SetVerticalAlignment(SpreadsheetVerticalAlignment.Center) .SetHorizontalAlignment(SpreadsheetHorizontalAlignment.Center); package.Save(); }