Export multiple files (with different file types) from database (Byte Array) to single zipped file

I need to export multiple files with varying file types (pdf, xlsx, .docx) stored in a database (Byte Array) and save them as a single zipped file. How should I handle the multiple files? I’m assuming I would need to first store the files in a list and using MemoryStream? I’m using the ZipArchive class to export the files as a zip file. Assuming this approach will work, I’m unsure of how to pass the list as an argument to the ZipArchive (DownloadMultipleFiles) method.

Can not connect to Sql database in C# asp mvc application with Entity Framework BUT the same code works with Winform application

First of all, please excuse me if it sounds too rooky. I consider myself novice in MVC applications.
I have ran into a strange problem and there does not seem to be any way out of this, at least so far..I have looked everywhere and left no stone unturned to get it worked. Finally I turned to this forum.
This is my first post, so any mistakes please overlook and guide me.