Why should I write CLS compliant code?

Question

I've found a lot of pages about CLS compliance.

I've understood that CLS compliance:

• Is a way to guarantee different assembly compatibility.
• Is a way to declare the high security code

Many peolple write that "if you write code, you should write it CLS compliant." But as far I can read, there is no reason to use CLS compliance in generic software.

Am I right, or did I miss something?

Answer 1

If you write a library or framework it makes sense to ensure your library can be used from any CLR language.

Answer 2

CLS-compliance is particularly important if you're distributing libraries - specifically, writing CLS compliant guarantees that your libraries will be usable by all CLS-compliant languages.

For instance, Visual Basic is not case-sensitive, whereas C# is. One of the requirements of CLS compliance is that public (and protected) member names should not differ only by case, thus ensuring that your libraries can be used safely by Visual Basic code, or any other .NET language that doesn't differentiate based on case.