Moderate DI Question 25 of 215

How is dependency injection used in MVC controllers?

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

IdeaDI

HowWhat happens inside

Why they askShows real use

I inject services through the constructor and register them in the container.

Why interviewers care about DI:

DI questions separate people

who only read docs from people who shipped.

Keep it short, concrete,

and tied to .NET MVC work.

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
I inject services through
the constructor and register them in the container.
2
Framework MVC needed a
custom resolver
3
How it works
Core has it built in.
4
I avoid the service
locator pattern inside actions.
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

“Framework MVC needed a custom resolver”

Break into beats

FrameworkMVCneededacustomresolver

Speaking order

2987408337471632900

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

I inject services through the constructor and register them in the container. Framework MVC needed a custom resolver