Ultra-fast C# CSV parser: implements stream reader and writer.

• very fast: x2-x4 times faster than JoshClose's CSVHelper
• memory efficient: uses only single circular buffer, no allocations in heap for CSV of any size
• lightweight: bare csv parser with simple API
• tolerant to not-fully correct CSV files, you can control max length of CSV file (useful for processing end-user CSV uploads)
• can be used for stream processing of many-GB CSV files
• supports all .NET versions: Framework 4.5+, .NET Core, NET6+

Parse CSV stream:

using (var streamRdr = new StreamReader(inputStream)) { var csvReader = new CsvReader(streamRdr, ","); while (csvReader.Read()) { for (int i=0; i<csvReader.FieldsCount; i++) { string val = csvReader[i]; } } } 

Generate CSV to stream:

 using (var streamWr = new StreamWriter(outputStream)) { var csvWriter = new CsvWriter(streamWr); // write line csvWriter.WriteField("Value with double quote\""); csvWriter.WriteField("And with\nnew line"); csvWriter.WriteField("Normal"); csvWriter.NextRecord(); } 

NReco.Csv is in production use at SeekTable.com and PivotData microservice.

Copyright 2017-2024 Vitaliy Fedorchenko and contributors

Distributed under the MIT license