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What's the Best Free and Open-Source CSV Parser Library for C#?

Susan Sarandon
Release: 2025-01-18 10:06:16
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What's the Best Free and Open-Source CSV Parser Library for C#?

C# CSV parsing options

The question of finding a good free C# CSV parser available under a permissive license comes up often, and looking for a corresponding version of SuperCSV in Java might be a useful idea. One potential solution worth considering is the FileHelpers open source library.

FileHelpers open source library

FileHelpers is an open source library for C# that provides functions for parsing and writing CSV files. Its permissive license makes it free for commercial and non-commercial use. The library has the following features:

  • Easy to use and highly configurable
  • Supports parsing delimited and fixed-width CSV files
  • Provide validation and conversion rules
  • Built-in classes containing commonly used data types

Install

To install the FileHelpers library you can use the NuGet package manager:

<code>Install-Package FileHelpers</code>
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How to use

Once installed, you can use the FileHelpers library to parse CSV files by defining a custom class to represent the data in the file. For example:

<code>[DelimitedRecord(",")]
public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public int Age { get; set; }
}</code>
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You can then use the FileHelpers helper class to parse the file:

<code>var engine = new FileHelperEngine<Person>();
var people = engine.ReadFile("people.csv");</code>
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The people variable will now contain a collection of Person objects, representing the data from the CSV file.

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