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October 8, 2006 / jphoward

FileHelpers Library

The FileHelpers Library is an elegantly designed, thoroughly tested, free (LGPL) library for .Net, described by its author as

…an easy to use library to import/export data from fixed length or delimited records in files, strings or streams.

Here’s an example from the project’s web site to read and write delimited text files:

[DelimitedRecord(“,”)] public class Customer {

    public int CustId;

    public string Name;

    public decimal Balance;

    [FieldConverter(ConverterKind.Date, “dd-MM-yyyy”)]

    public DateTime AddedDate;



internal class Program {

    private static void Main(string[] args) {

        FileHelperEngine<Customer> engine = new FileHelperEngine<Customer>();

        // To Read Use:

        Customer[] res = engine.ReadFile(“FileIn.txt”);

        foreach (Customer cust in res) {

            Console.WriteLine(“Customer Info:”);

            Console.WriteLine(cust.Name + ” – “ +




        // To Write Use:

        engine.WriteFile(“FileOut.txt”, res);




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