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Editorial Team
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Asked: 2026-06-03T21:57:26+00:00

When I’m writting: throw new ArgumentOutOfRangeException() Placing the caret between the quotes, and pressing

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When I’m writting:

throw new ArgumentOutOfRangeException("")

Placing the caret between the quotes, and pressing Ctrl+Space to open up intellisense actually does something!

The strange and beautiful thing that dazzles me is that it actually suggests parameter names from the method:

ScreenShot

Can someone please explain to me how it can be achieved?

How can I add custom intellisense in such level?

UPDATE:
As some pointed out – this intellisense doesn’t popup normally.

I am using ReSharper 6.1, and I can control whether that intellisense will popup or not in ReSharper > Options > Intellisense > Autopopup > [C#] In string literals.

Still, I would like to know how I can create such intellisense myself.

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1 Answer

  1. Editorial Team

    I think you should take a look at this article.
    Plus there is another Stack Overflow question quite similar to yours that may give you some hints too.

    How to implement concretelly I don’t know, but I don’t think you even need to use reflection as even “normal” IntelliSense of Visual Studio works without any need to build your project first. Just adding a new class to your project for example makes it available for IntelliSense. I think ReSharper uses the same kind of mechanism behind.

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