How to validate and create Orders through an Excel file in RAP based Fiori Application

[DarshanAsknani]

Requirement:

1. Add File Uploader Dialog Box by clicking the button ( Global action or on table control).
2. Validate and create Orders using the data from Excel.

Challenge: 

1. How can I validate the data inside the Excel File? ( I already have methods for all validations in my behavior class ).
2. Is it possible to trigger those methods from VS Code( controller.js )?
3. Where should I create the action button from RAP(using annotation) or VS Code using a custom action extension?
4. Once the Excel file is uploaded how can I trigger the create method from my behavior class implementation?
5. Which Approach should I choose for now I'm using Managed.
6. 

[Marian_Zeis]

You can use this

https://spreadsheet-importer.com/

[DarshanAsknani]

Sure. I'll try this.
Thank You.