Question

I have a List contains all float values( lets say List<float> avgDifClosedLoop; )

Now to do more process I want to export them in excel.
how can I do this through c#?

Answer 1

Yes, but you need an external library to do this (or interop classes that will require Office installed). But you can do this (without interop) using NPOI.

example:

using System.Collections.Generic;
using System.IO;
using System.Windows;
using System.Windows.Documents;
using NPOI.HSSF.UserModel;

namespace listFloatToExcel
{

    [...]

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            //list of floats
            List<float> f = new List<float>();
            f.Add(4.323F);
            f.Add(34.54F);
            f.Add(12.4F);
            f.Add(454F);
            f.Add(0987.32F);

            // Create a new workbook and a sheet named "Floats"
            var workbook = new HSSFWorkbook();
            var sheet = workbook.CreateSheet("Floats");

            var rowIndex = 0;
            foreach (var n in f)
            {
                var row = sheet.CreateRow(rowIndex);
                row.CreateCell(0).SetCellValue(n);
                rowIndex++;
            }

            using (var fileData = new FileStream(@"C:\temp\listFloatToExcel\floats.xls", FileMode.Create))
            {
                workbook.Write(fileData);
            }

       }

    [...]
}