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<title>A .NET library for reading and writing CSV files. Extremely fast, flexible, and easy to use. | CsvHelper</title>
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<div class="home">
<div class="columns">
<div class="column">
<h1 class="title is-1">CsvHelper</h1>
<h2 class="subtitle">A .NET library for reading and writing CSV files. Extremely fast, flexible, and easy to use.</h2>
<div class="columns is-variable is-2">
<div class="column is-narrow">
<a class="button is-large is-success" href="https://www.nuget.org/packages/CsvHelper/">
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<img src="/CsvHelper/images/logo.svg" />
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</div>
<h3 class="title is-3">Features</h3>
<hr />
<div class="columns is-multiline">
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fas fa-bolt"></i>
</span>
<span>Fast</span>
</h4>
<p class="subtitle is-6">Compiles classes on the fly for extremely fast performance.</p>
</div>
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fas fa-sync-alt"></i>
</span>
<span>Flexible</span>
</h4>
<p class="subtitle is-6">Conservative when writing, liberal when reading.</p>
</div>
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fas fa-thumbs-up"></i>
</span>
<span>Easy to Use</span>
</h4>
<p class="subtitle is-6">
Reading and writing is as simple as GetRecords<T>() and WriteRecords(records).
No configuration required.
</p>
</div>
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fas fa-cogs"></i>
</span>
<span>Highly Configurable</span>
</h4>
<p class="subtitle is-6">Feature rich mapping and attribute systems to configure any type of CSV file to any type of class.</p>
</div>
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<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
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</span>
<span><a href="https://tools.ietf.org/html/rfc4180" target="_blank">RFC 4180</a> Compliant</span>
</h4>
<p class="subtitle is-6">Adheres to the RFC 4180 standard to ensure compatibility across systems.</p>
</div>
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<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fab fa-linux"></i>
</span>
<span>Linux Mode</span>
</h4>
<p class="subtitle is-6">
Mode for common Linux/SerDe files where an escape character is used instead of RFC 4180's field quoting.
</p>
</div>
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fas fa-file-excel"></i>
</span>
<span>Graceful Fallback</span>
</h4>
<p class="subtitle is-6">When non-standard files are read, fallback will match MS Excel parsing.</p>
</div>
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fas fa-memory"></i>
</span>
<span>Low Memory Usage</span>
</h4>
<p class="subtitle is-6">Reading records will yield results so only one record is in memory at a time.</p>
</div>
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fas fa-database"></i>
</span>
<span>Field Caching</span>
</h4>
<p class="subtitle is-6">
Option to use field caching when there is repeated data in a CSV file. This will reduce memory
and speed up parsing time.
</p>
</div>
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fab fa-apple"></i>
</span>
<span>Run Anywhere</span>
</h4>
<p class="subtitle is-6">
CsvHelper is built on .NET Standard 2.0 which allows it to run
<a href="https://docs.microsoft.com/en-us/dotnet/standard/net-standard" target="_blank">almost everywhere</a>.
Older versions of .NET are possible if needed.
</p>
</div>
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<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fab fa-github"></i>
</span>
<span>Open Source</span>
</h4>
<p class="subtitle is-6">
Many contributors have helped make CsvHelper the great library it is today.
Completely free for commercial use. Dual licensed under
<a href="https://opensource.org/licenses/MS-PL" target="_blank">MS-PL</a> and
<a href="https://opensource.org/licenses/Apache-2.0" target="_blank">Apache 2</a>.
</p>
</div>
</div>
<br />
<h3 class="title is-3">Help</h3>
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<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fab fa-stack-overflow"></i>
</span>
<span>Stack Overflow</span>
</h4>
<p class="subtitle is-6">
<a href="https://stackoverflow.com/questions/tagged/csvhelper">Stack Overflow</a>
has millions of users in its community just waiting to answer your questions.
There is only one of me and I'm pretty busy.
<span class="icon">
<i class="fas fa-grin-squint-tears"></i>
</span>
</p>
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<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fas fa-book"></i>
</span>
<span>Documentation</span>
</h4>
<p class="subtitle is-6">
Learn how to use CsvHelper using the <a href="/CsvHelper/api">API reference</a>
or check out some <a href="/CsvHelper/examples">examples</a>.
</p>
</div>
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fas fa-bug"></i>
</span>
<span>Features Requests and Bugs</span>
</h4>
<p class="subtitle is-6">
If you have a feature request or have found a bug, you can
<a href="https://github.com/joshclose/csvhelper/issues" target="_blank">log an issue</a>.
Please use
<a href="https://stackoverflow.com/questions/tagged/csvhelper" target="_blank" rel="nofollow">Stack Overflow</a>
if you have a question.
</p>
</div>
</div>
<br />
<h3 class="title is-3">License</h3>
<hr />
<p>Completely free for commercial use. Dual licensed. Choose which ever license suits your needs.</p>
<p><a href="https://opensource.org/licenses/MS-PL" target="_blank" rel="nofollow">Microsoft Public License (MS-PL)</a></p>
<p><a href="https://opensource.org/licenses/Apache-2.0" target="_blank" rel="nofollow">Apache License, Version 2.0</a></p>
<br /><br />
<h3 class="title is-3">Contributions</h3>
<hr />
<div class="content">
<p>Want to contribute? Great! Here are a few guidelines.</p>
<ol>
<li>
If you want to do a feature, post an issue about the feature first. Some features are intentionally left out,
some features may already be in the works, or I may have some advice on how I think it should be done. I would
feel bad if time was spent on some code that won't be used.
</li>
<li>
If you want to do a bug fix, it might not be a bad idea to post about it too. I've had the same bug fixed by
multiple people at the same time before.
</li>
<li>
All code should have a unit test. If you make a feature, there should be significant tests around the feature.
If you do a bug fix, there should be a test specific to that bug so it doesn't happen again.
</li>
<li>
Pull requests should have a single commit. If you have multiple commits, squash them into a single commit before
requesting a pull.
</li>
<li>
When in Rome: Try and follow the code styling already in place. I use default Visual Studio Text Editor settings
but change tabs to Keep tabs.
</li>
</ol>
</div>
<br />
<h3 class="title is-3">Contributors</h3>
<hr />
<a href="https://github.com/JoshClose/CsvHelper/graphs/contributors">
<img src="https://camo.githubusercontent.com/be8184ec3d8d1a25fbf40e461eb193d178fb8e5a/68747470733a2f2f6f70656e636f6c6c6563746976652e636f6d2f63737668656c7065722f636f6e7472696275746f72732e7376673f77696474683d38393026627574746f6e3d66616c7365" data-canonical-src="https://opencollective.com/csvhelper/contributors.svg?width=890&button=false" style="max-width: 100%" />
</a>
<br /><br />
<h3 class="title is-3">Donations</h3>
<hr />
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<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fab fa-paypal"></i>
</span>
<span>One Time Donation</span>
</h4>
<p class="subtitle is-6">
You can do a one time donation through
<a href="https://www.paypal.me/closejosh" target="_blank" rel="nofollow">Paypal</a>.
</p>
</div>
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fab fa-osi"></i>
</span>
<span>Recurring Donations</span>
</h4>
<p class="subtitle is-6">
You can do recurring donations through
<a href="https://opencollective.com/csvhelper" target="_blank" rel="nofollow">Open Collective</a>.
</p>
</div>
<div class="column is-4">
<h4 class="title is-4 has-text-weight-normal">
<span class="icon">
<i class="fab fa-amazon"></i>
</span>
<span>Wish List</span>
</h4>
<p class="subtitle is-6">
If you want to do something a little more fun, you can pick something
from my <a href="http://a.co/7EwAZXU" target="_blank" rel="nofollow">Amazon wish list</a>. This
obviously doesn't go directly towards building software, but does help
keep me sane when I'm not.
</p>
</div>
</div>
<h3 class="title is-3">Backers</h3>
<hr />
<a href="https://opencollective.com/csvhelper#backers" target="_blank" rel="nofollow">
<img src="https://camo.githubusercontent.com/47a6bf22fd6cbdd06e076c8710fcfe422e333e86/68747470733a2f2f6f70656e636f6c6c6563746976652e636f6d2f63737668656c7065722f6261636b6572732e7376673f77696474683d383930" data-canonical-src="https://opencollective.com/csvhelper/backers.svg?width=890" style={{ maxWidth: "100%" }} />
</a>
<h3 class="title is-3">Sponsors</h3>
<hr />
<a href="https://opencollective.com/csvhelper/sponsor/0/website" target="_blank" rel="nofollow">
<img src="https://camo.githubusercontent.com/8c4b18a584bc3d249062d169f460ee2d3b8f7373/68747470733a2f2f6f70656e636f6c6c6563746976652e636f6d2f63737668656c7065722f73706f6e736f722f302f6176617461722e737667" data-canonical-src="https://opencollective.com/csvhelper/sponsor/0/avatar.svg" style={{ maxWidth: "100%" }} />
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<div class="has-text-centered">© 2009-2022 Josh Close</div>
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