ADO Net C# Tutorial

using System;
using System.Data;
using System.Data.OleDb;
    class Program
    {
        static void Main(string[] args)
        {
            string sqlSelect = "SELECT * FROM [Category.txt]";
            string connectString = "Provider=Microsoft.ACE.OLEDB.12.0;" +
                @"Data Source=..\;" +
                "Extended Properties=\"text;HDR=yes;FMT=Delimited\";";
            OleDbDataAdapter da = new OleDbDataAdapter(sqlSelect, connectString);
            DataTable dt = new DataTable("Categories");
            da.Fill(dt);
            foreach (DataRow row in dt.Rows)
            {
                Console.WriteLine("{0}; {1}; {2}", row["CategoryID"],
                    row["CategoryName"], row["Description"]);
            }
        }
    }