Hi Phan,
Document Editor:
Document editor provides support to view, edit, save and print the word documents. Please check the showcase sample of document editor from below link.
Please refer the below documentation on exporting the document editor contents in client-side.
Kindly refer the below documentation and KB which is in ASP.NET Core and MVC platform on exporting the document to server-side.
PDF viewer:
Using Essential PDF library, we can able to create, read and edit PDF document. Please refer the below documentation for more details,
For loading and saving PDF document in different platform, Please refer the below documentation link,
Please refer the below KB documentation to save PDF document in ASP.NET Core and ASP.NET MVC platform,
Spreadsheet:
Spreadsheet (Excel viewer) is a feature-rich control for organizing and analyzing data in tabular format with some cool features similar to Microsoft Excel’s. It provides all the common Excel features, including data binding, selection, editing, formatting, resizing, sorting, and importing and exporting Excel documents.
Please refer the below documentation on exporting to the Excel file
Please check and get back to us if you need further assistance on this.
Regards,
Saranya D