High Ajax Question 79 of 215

How do you upload large files with progress in MVC?

ASP.NET MVC · Speak this in 60–90 seconds · Faridabad & Delhi NCR

IdeaAjax

HowWhat happens inside

Why they askShows real use

Chunked uploads or direct-to-blob with a short-lived SAS, plus a complete callback to the app.

Why interviewers care about Ajax:

This is a process

question about Ajax.

Panels listen for order,

trade-offs, and what you would actually do on a .NET MVC project - not buzzwords.

Stay structured

Name the idea, why it exists, then one short example.

Close cleanly

End with when you use it and one common pitfall.

Before you speak the answer, walk the interviewer through these steps:

1
Chunked uploads or direct-to-blob
with a short-lived SAS, plus a complete callback to the app.
2
Single huge multipart posts
time out.
3
I validate and virus-scan
on completion.
4
Give an example
One tiny concrete case you can say aloud.
5
Common mistake
What juniors usually get wrong.
6
Close
When you pick this over the alternative.

Here's a short line you can speak, broken into clear beats:

Say this line

“Single huge multipart posts time out.”

Break into beats

Singlehugemultipartpoststimeout

Speaking order

2987408337471632900

Note: Adapt this scaffold to your own project — keep it under 60–90 seconds.

Chunked uploads or direct-to-blob with a short-lived SAS, plus a complete callback to the app. Single huge multipart posts time out.