Upload CSV File And Read Using ASP.NET

---------------------------------------------------------------
CSVReader.cs
---------------------------------------------------------------
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text;
using System.Collections;

public class CSVReader
{
    //
    private Stream objStream;
    private StreamReader objReader;
    //add name space System.IO.Stream
    public CSVReader(Stream filestream) : this(filestream, null) { }
    public CSVReader(Stream filestream, Encoding enc)
    {
        this.objStream = filestream;
        //check the Pass Stream whether it is readable or not
        if (!filestream.CanRead)
        {
            return;
        }
        objReader = (enc != null) ? new StreamReader(filestream, enc) : new StreamReader(filestream);
    }
    //parse the Line
    public string[] GetCSVLine()
    {
        string data = objReader.ReadLine();
        if (data == null) return null;
        if (data.Length == 0) return new string[0];
        //System.Collection.Generic
        ArrayList result = new ArrayList();
        //parsing CSV Data
        ParseCSVData(result, data);
        return (string[])result.ToArray(typeof(string));
    }

    private void ParseCSVData(ArrayList result, string data)
    {
        int position = -1;
        while (position < data.Length)
            result.Add(ParseCSVField(ref data, ref position));
    }
    private string ParseCSVField(ref string data, ref int StartSeperatorPos)
    {
        if (StartSeperatorPos == data.Length - 1)
        {
            StartSeperatorPos++;
            return "";
        }

        int fromPos = StartSeperatorPos + 1;
        if (data[fromPos] == '"')
        {
            int nextSingleQuote = GetSingleQuote(data, fromPos + 1);
            int lines = 1;
            while (nextSingleQuote == -1)
            {
                data = data + "\n" + objReader.ReadLine();
                nextSingleQuote = GetSingleQuote(data, fromPos + 1);
                lines++;
                if (lines > 20)
                    throw new Exception("lines overflow: " + data);
            }
            StartSeperatorPos = nextSingleQuote + 1;

            string tempString = data.Substring(fromPos + 1, nextSingleQuote - fromPos - 1);
            tempString = tempString.Replace("'", "''");
            return tempString.Replace("\"\"", "\"");
        }

        int nextComma = data.IndexOf(',', fromPos);
        if (nextComma == -1)
        {
            StartSeperatorPos = data.Length;
            return data.Substring(fromPos);

        }
        else
        {
            StartSeperatorPos = nextComma;
            return data.Substring(fromPos, nextComma - fromPos);
        }
    }
    private int GetSingleQuote(string data, int SFrom)
    {
        int i = SFrom - 1;
        while (++i < data.Length)
            if (data[i] == '"')
            {
                if (i < data.Length - 1 && data[i + 1] == '"')
                {
                    i++;
                    continue;
                }
                else
                    return i;
            }

        return -1;
    }
}
---------------------------------------------------------------
CSVReader reader = new CSVReader(fld.PostedFile.InputStream);
string[] headers = reader.GetCSVLine();
DataTable dt = new DataTable();
foreach (string strHeader in headers)
    dt.Columns.Add(strHeader);
string[] data;
while ((data = reader.GetCSVLine()) != null)
    dt.Rows.Add(data);




DATA TABLE CREATED OBJECT WITH DATA
---------------------------------------------------------------