NPOI Excel C# - Revolutionizing Excel File Management in .NET

NPOI Excel C# provides a powerful, flexible toolset for seamless manipulation of Excel files in .NET applications, though it may require a learning curve for those unfamiliar with the framework.
This powerful new tool from IronSoftware fully supports .NET 5, Core, Standard, Framework and Azure. You can import files using common extensions like XLS, XLSX, TSV and CSV. That includes exporting in the same formats plus JSON. That kind of versatility is exactly what so many businesses need right now, considering the rapid movement toward cross-functional hybrid and remote workforces.
Excel is a highly popular program that many end-users want to use with other software and applications. Having this added to your build only increases your potential market share and recognition. Best of all, it does not have a massive price tag like off-the-shelf solutions that often do not provide the exact benefits you are seeking. Instead of being full of bugs like open-source products on the market, NPOI C# Excel has been carefully vetted and tested by the expert team at IronSoftware before being released to the general public.
You can learn a lot more about the numerous other features and corresponding detailed documentation at https://ironsoftware.com/csharp/excel/blog/compare-to-other-components/npoi-alternative-by-ironxl/. You can also download the free NuGent package at https://ironsoftware.com/csharp/excel/. The only time you will have to pay is when you are ready to move your VB project from development to active deployment.
Bring the same formatting and Excel-like features end-users from around the globe have grown to expect to your next project and integrate NPOI C# Excel today.
Overview
NPOI Excel C# is a Shareware software in the category Development developed by NPOI Alternative Startup Group.
The latest version of NPOI Excel C# is 2022.7.7362, released on 08/03/2022. It was initially added to our database on 08/03/2022.
NPOI Excel C# runs on the following operating systems: Windows.
NPOI Excel C# has not been rated by our users yet.
Pros
- Open-source and free to use
- Supports .xls and .xlsx file formats
- No need for Microsoft Office installed on the server
- Can create, read, and modify Excel files easily
- Lightweight and efficient for tasks involving Excel manipulation
- Active community support and regular updates
- Good documentation to help developers get started
Cons
- Limited support for advanced Excel features (like charts, pivot tables)
- Performance can degrade with very large Excel files
- Learning curve for those not familiar with C# or its libraries
- Some edge cases in formatting may not be handled as well as in MS Excel
- Debugging issues may arise due to lack of detailed error messages
FAQ
What is NPOI Excel C#?
NPOI Excel C# is a .NET library that allows developers to read and write Excel files in C# without the need for Microsoft Excel installed on the server.
Can I use NPOI for both XLS and XLSX formats?
Yes, NPOI supports both XLS (Excel 97-2003) and XLSX (Excel 2007 and later) formats.
Is NPOI compatible with .NET Core?
Yes, NPOI is compatible with .NET Core, allowing it to be used in cross-platform applications.
How do I install NPOI in my C# project?
You can install NPOI via NuGet Package Manager by running the command 'Install-Package NPOI' in the Package Manager Console.
What features does NPOI provide for handling Excel files?
NPOI provides features such as creating, reading, updating, formatting cells, handling charts, and manipulating sheets.
Can I read formulas using NPOI?
Yes, NPOI can read cell formulas, but it may not calculate them as Excel does. It retrieves the formula as a string.
Is there a limit to the number of rows or columns I can handle with NPOI?
NPOI can handle up to 65,536 rows and 256 columns for XLS format, and over 1 million rows for XLSX format.
What are the benefits of using NPOI over other libraries like EPPlus or ClosedXML?
NPOI is an excellent choice for projects requiring minimal dependencies and direct manipulation of document formats without additional overhead.
Are there examples available for using NPOI in C#?
Yes, the official NPOI GitHub repository contains several examples demonstrating how to use the library for various functionalities.
Is NPOI actively maintained?
Yes, NPOI is actively maintained with ongoing improvements and updates by its contributors.

Pete Milner
I'm Pete, a software reviewer at UpdateStar with a passion for the ever-evolving world of technology. My background in engineering gives me a unique insight into the intricacies of software, allowing me to provide in-depth, knowledgeable reviews and analyses. Whether it's the newest software releases, tech innovations, or the latest trends, I'm here to break it all down for you. I work from UpdateStar’s Berlin main office.
Latest Reviews by Pete Milner
NPOI Alternative Startup Group
with UpdateStar freeware.
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