convert byte[] array to excel file

Are you going to write the data from Array to Excel rows or columns? If so, you could try following code snippets:

 

 

using Spire.Xls;

namespace WriteArrayToExcel

{

    class Program

    {

        static void Main(string[] args)

        {

            //initialize a new Workbook class

            Workbook wb = new Workbook();

            Worksheet sheet = wb.Worksheets[0];

            //define a byte Array

            byte[] array = new byte[4]{ 0x02, 0x01 ,0x04, 0x03 };

           //insert data from byte array to Excel column

           sheet.InsertArray(array, 1, 1, true);

           //save the changes to file

           wb.SaveToFile("sample.xlsx", ExcelVersion.Version2013);

           System.Diagnostics.Process.Start("sample.xlsx");

        }

    }

}