FA/Xls/ExcelRow.cs

using System.Collections.Generic;
using System.Data;
using System.Linq;
using NPOI.SS.UserModel;

namespace Xls
{
    public static class ExcelRow
    {
        public static void AddNewRow(this ISheet sheet, DataRow dataRow, ICellStyle cellStyle, int rowNumber, int[] numberColumns)
        {
            IRow row = sheet.CreateRow(rowNumber);

            for (int i = 0; i < dataRow.Table.Columns.Count; i++)
            {
                ICell cell = row.CreateCell(i);

                if (null != cellStyle)
                {
                    cell.CellStyle = cellStyle;
                }

                if (numberColumns.Any(o => o == i))
                {
                    try
                    {
                        cell.SetCellValue(double.Parse(dataRow[i].ToString()));
                    }
                    catch
                    {
                        cell.SetCellValue(dataRow[i].ToString());
                    }
                }
                else
                {
                    cell.SetCellValue(dataRow[i].ToString());
                }
            }
        }

        public static void AddNewRow(this ISheet sheet, IList<string> dataRow, ICellStyle cellStyle, int rowNumber, int[] numberColumns)
        {
            IRow row = sheet.CreateRow(rowNumber);

            for (int i = 0; i < dataRow.Count; i++)
            {
                ICell cell = row.CreateCell(i);

                if (null != cellStyle)
                {
                    cell.CellStyle = cellStyle;
                }

                if (numberColumns.Any(o => o == i))
                {
                    try
                    {
                        cell.SetCellValue(double.Parse(dataRow[i]));
                    }
                    catch
                    {
                        cell.SetCellValue(dataRow[i]);
                    }
                }
                else
                {
                    cell.SetCellValue(dataRow[i]);
                }
            }
        }
    }
}