using (OleDbConnection cnn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=""" +
                Path.GetDirectoryName (fileName) + @""";Extended Properties=""text;HDR=yes;FMT=Delimited(,)"";"))
            {

[1234.csv]
ColNameHeader=False
Format=Delimited(;)

using System.Data;
using System.Data.OleDb;
using System.IO;

namespace csv
{
    class Program
    {
        static void Main(string[] args)
        {
            ReadCSV(@"d:\1234.csv");
        }

        public static DataTable ReadCSV(string fileName)
        {
            FileInfo fi = new FileInfo(fileName);
            string schema = string.Format(
@"[{0}]
ColNameHeader = False
Format = Delimited(;)", fi.Name);

            DataTable dt = new DataTable("Data");
            string schemaName = Path.Combine(fi.DirectoryName, "schema.ini");
            try {
                
                File.WriteAllText(schemaName, schema);
                string constr = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\"{0}\""
                    +";Extended Properties='text';", fi.DirectoryName);
                using (OleDbConnection cnn = new OleDbConnection(constr))
                {
                    using (OleDbCommand ccmd = new OleDbCommand(
                        string.Format("select * from [{0}]", fi.Name), cnn))
                    {
                        cnn.Open();
                        using (OleDbDataAdapter adapter = new OleDbDataAdapter(ccmd))
                        {
                            adapter.Fill(dt);
                        }
                        cnn.Close();
                    }
                }
            }
            finally
            {
                if (File.Exists(schemaName))
                    File.Delete(schemaName);
            }
            return dt;
        }
    }
}

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Jet\4.0\Engines\Text