IronXL, The Excel class library for .NET Framework,
Core, and Standard, has full support for the XLSX file
format, Microsofts most recent iteration of the Excel
spreadsheet file format.

We can use C# to read XLS files using IronXL, and
indeed import data from them, including live formula
updating. IronXL can also be used to create XLSX files
or convert old XLS files to XLSX files and vice versa.
It can, in addition, import CSV, TSV, JSON, XML, and
native class objects within C# to and from Excel
workbooks.

Using IronXL and C# together, we can easily take any
data within a C# application and export it to Excel so
that it can be given to a user as a report or export
it to another business system for its consumption.

IronXL differentiates itself by ease of installation
using NuGet and its lack of dependency upon Microsoft
Office being installed on the target machine. It is a
pure C# solution for working with XLSX Excel files.

The IronXL library can be utilized to make and fare
XLSX, XLS, CSV, TSV, JSON and XML records.

We can likewise fare to System.Data.DataSet and
System.Data.DataTable items for interoperability with
SQL

IronXL is an Excel Library for C# and .Net which
allows developers to Read and edit Excel data from XLS
and XLSX Documents without using
Microsoft.Office.Interop.Excel.

The API allows us to Create, Read, Manipulate, Save
and Export Excel files intuitively for:

.Net Framework 4.5+
.Net Core 2+
.Net Standard
Xamarin
Windows Mobile
Mono
& Azure Cloud hosting

It also fully supports ASP.Net, MVC, Windows, MacOS,
Linux, iOS, Android and Windows Mobile application
development.

With IronXL we can Read, Add, Sum, Average, Min, Max
and Set Values over any Range of Cells.

You can find more about this at
https://ironsoftware.com/csharp/excel/technology/read_x
lsx-csharp/#convert-excel-spreadsheet

You can download the software at
https://www.nuget.org/packages/IronXL.Excel

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