PocketCsvReader

PocketCsvReader reads CSV and other structured text through forward-only data readers and streaming row outputs. Optional packages support JSON/JSONC, NDJSON, fixed-width, LTSV, logfmt, web logs, and security logs. The projects target .NET 8, 9, and 10.

Documentation · Installation · Contributing

Packages

Package	Purpose
PocketCsvReader	CSV/TSV and shared APIs
PocketCsvReader.Json	JSON and JSONC
PocketCsvReader.Ndjson	NDJSON
PocketCsvReader.FixedWidth	Fixed character positions
PocketCsvReader.KeyValue	LTSV and logfmt
PocketCsvReader.WebLogs	Common, Combined, W3C
PocketCsvReader.SecurityLogs	CEF and LEEF
PocketCsvReader.Arrow	Apache Arrow output
PocketCsvReader.Chrononuensis	Temporal period parsers

First example

dotnet add package PocketCsvReader

using System.Text;
using PocketCsvReader.Configuration;

var csv = new CsvReaderBuilder()
    .WithDialect(d => d.WithHeader().WithLineTerminator("\n"))
    .Build();
using var stream = new MemoryStream(Encoding.UTF8.GetBytes("Id,Name\n1,Ada\n"));
using var reader = csv.ToDataReader(stream);
while (reader.Read())
    Console.WriteLine($"{reader.GetInt32(0)}: {reader.GetString(1)}");
// 1: Ada

See output models, reader filtering, object mapping, async reading, inference, and performance guidance for complete behavior and limitations.

Shared ownership, null, conversion, and performance contracts have their authoritative home in the documentation rather than duplicated README sections.