fileupload web api

 https://code-maze.com/upload-files-dot-net-core-angular/

important upload files web api and angular using formdata

https://flaviocopes.com/how-to-replace-whitespace-javascript/#:~:text=The%20%5Cs%20meta%20character%20in,occurrence%20of%20the%20white%20space.

https://bobbyhadz.com/blog/javascript-replace-spaces-with-underscores#:~:text=Use%20the%20String.,whitespace%20characters%20replaced%20by%20underscores.