using NPOI.HPSF;
using NPOI.HSSF.UserModel;
using NPOI.SS.Formula.Eval;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
using NPOI.XSSF.UserModel;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Web;

namespace MyCode.Project.Infrastructure.Common
{
    public class NPOIHelper
    {

        public static MemoryStream ExcelExport(DataTable table)
        {


            MemoryStream ms = new MemoryStream();
            using (table)
            {
                IWorkbook workbook = new HSSFWorkbook();

                ISheet sheet = workbook.CreateSheet();

                IRow headerRow = sheet.CreateRow(0);
                // handling header.
                foreach (DataColumn column in table.Columns)
                    headerRow.CreateCell(column.Ordinal).SetCellValue(column.Caption);//If Caption not set, returns the ColumnName value
                // handling value.
                int rowIndex = 1;
                foreach (DataRow row in table.Rows)
                {
                    IRow dataRow = sheet.CreateRow(rowIndex);
                    foreach (DataColumn column in table.Columns)
                    {
                        dataRow.CreateCell(column.Ordinal).SetCellValue(row[column].ToString());
                    }
                    rowIndex++;
                }
                workbook.Write(ms);
                ms.Flush();
                ms.Position = 0;
            }


            return ms;
        }


    }
}