Multiple Languages

[Hole-In-One]

This may or may not be a stupid question, but why and when would you want to mix programming languages in a single app?
(ie: VB.Net and C++.Net)

What are the benefits and is any the downfalls?

[Memnoch1207]

You can't mix programming languages in an application.

[trisuglow]

Unless I misunderstand the question you can mix languages by referencing COM or .NET components or loading DLLs.

You may well want to write your front-end GUI in something that is quick to develop (like VB) but write components to handle the speed-critical processes behind it all.

[Hole-In-One]

This is what I'm meant, sorry for the misleading question!

You may well want to write your front-end GUI in something that is quick to develop (like VB) but write components to handle the speed-critical processes behind it all.

So the benefits mainly all performance and of course ease of use (Using VB for the front end)?

[Mike Hildner]

One of the touted advantages is that you can write your stuff in say, Delphi and I can write my stuff in Cobol, compile it as .NET and then someone case access it from VB. The idea that you can use your language of choice - as long as it'll do .NET

[trisuglow]

Yes, performance and ease-of-use. Reusability also comes into it. My current VB application has references to the Active Database Objects dll - I'm sure that this wasn't written in VB, but that doesn't stop me being able to use it.