Code Quality Rank: L2
Programming language: C#
License: Apache License 2.0
Tags: Excel     Npoi     Xlsx     Xls     Word     Docx    
Latest version: v2.5.2

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Statement about Russian Invasion War

This project fully supports Ukraine people to fight against Russian army. This is definitely an invasion. Ukraine are actually China's friend for a long time. Most core parts of China aircraft carrier, airplane are provided by Ukraine companies. I DON'T see any reason that we should support Russia instead Ukraine.

However, I don't wanna stop Russian developers from using NPOI. They are also victims. They cannot change Putin's or Russia Government's mind in any case. But if possible, Russian developers may help impact your government although it's risky. Thank you!


NuGet Badge Ko-Fi [License](LICENSE) [traffic](#) This project is the .NET version of POI Java project. With NPOI, you can read/write Office 2003/2007 files very easily.

Who is using NPOI?


ERC20: 0xD9CA5B6F3BcEa3f10b7C3B92f0EC783FbB47cBE1


Telegram User Group

Join us on telegram: https://t.me/npoidevs

NOTE: QQ or wechat is not recommended.

Get Started with NPOI

Getting Started with NPOI

How to use NPOI on Linux


NPOI Changelog

Replace DotnetCore.NPOI with NPOI ASAP

NPOI NEVER joins China NCC (.NET Core Community) group. They are cheating. The readme.md in Dotnetcore.npoi repo is full of lies. What they want to do is just to destory NPOI since they cannot make use of reputation of this component any more. That's why I'm always saying they are evil. The whole NCC group is evil.


Stop using Dotnetcore/NPOI nuget package. It’s obsolete!

The real history of Dotnetcore.NPOI 中文版

Advantage of NPOI

a. It's totally free to use

b. Cover most features of Excel (cell style, data format, formula and so on)

c. Supported formats: xls, xlsx, docx.

d. Designed to be interface-oriented (take a look at NPOI.SS namespace)

e. Support not only export but also import

f. Real successful cases all over the world

g. huge amount of basic examples

h. Works on both Windows and Linux

System Requirement

.NET Standard 2.1 (.NET Core 3.x)

.NET Standard 2.0 (.NET Core 2.x)

.NET Framework 4.0 and above

No Loongson CPU (NPOI will NOT support any issues running on LoognArch architecture. This CPU is a shit)

*Note that all licence references and agreements mentioned in the NPOI README section above are relevant to that project's source code only.