How to Read text file as database

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.OleDb;
using System.Data;


namespace PubishApps
{
public class ReadTextFileAsDB
{
/************************************************
* Topic : How to Read text file as database
* Use : Client code could implement DB-Query on text file.
* Author : kalit sikka
* **********************************************/

OleDbConnection oConnection = new OleDbConnection();

private bool OpenConnection(string InputTextFileName)
{
if(!string.IsNullOrEmpty(InputTextFileName))
{
oConnection.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source='"+InputTextFileName+"'; Extended Properties=text;HDR=yes;FMT=Delimited";
oConnection.Open();

if(oConnection.State == System.Data.ConnectionState.Open)
return true;
else
return false;
}

return false;
}

public void BindingDataToGridView(string InputTextFileName, string Query, DataSet ds)
{
try
{
OpenConnection(InputTextFileName);

// Create the data adapter to retrieve all rows from text file.
OleDbDataAdapter da =
new OleDbDataAdapter(Query, oConnection);

// Create and fill the table.
DataSet dt = new DataSet("MyData");
da.Fill(dt);
ds = dt.Copy();

// Bind the default view of the table to the grid.
// DBview.DataSource = dt.DefaultView;


}catch(Exception ex)
{
Console.WriteLine("Error Occured: "+ ex.Message);
}
finally
{
if(oConnection.State == System.Data.ConnectionState.Open)
{
oConnection.Close();
}
}


}


}
}