Export to Excel,Word , Pdf, Html,CSV

The data could be a C# class or a JSON string or a CSV string or a DataTable

NuGet package at https://www.nuget.org/packages/ExporterWordExcelPDF/

The source code has tests and a console project for easy testing the package

Code examples in C# / JavaScript at https://github.com/ignatandrei/Exporter/wiki

Demo online at http://exporter.azurewebsites.net/

You can contribute to the project - read https://github.com/ignatandrei/Exporter/wiki/Help-the-project

PS: Just to make you an idea, this can be the code to export to Excel

    List<Person> listWithPerson  = ... //obtained from database
    var export=new ExportExcel2007<Person>();
    var data = export.ExportResult(listWithPerson);
    File.WriteAllBytes("a.xlsx", data);
    Process.Start("a.xlsx");

(Do not forget

using ExporterObjects;
using ExportImplementation;  

)

You can also watch video tutorials at YouTube

But is better to read the Wiki