Making your code CLS compliant is important, as this confirms that the classes should only expose features that are common to the CLS. So anyone using your classes and writing in a different programming language do not face any issues.
To make sure, CLS compliancy is checked by the C# compiler we have to explicitly define the CLSCompliantAttribute.
Marking inside AssemblyInfo.cs class
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[assembly: CLSCompliant(true)]
Marking an entire assembly as CLS compliant
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using System;
[assembly:CLSCompliant(true)]
Marking a particular method as CLS compliant
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[CLSCompliant(true)]
public void MyMethod()
Remeber you have to be extra careful when you enable CLS compliancy else C# compiler to raise an error , here are some examples :
1. When your class methods that are identical but differ only by ‘out’ or ‘ref’.
2. When a publicly exposed member starts with an underscore (_).
3. When an abstract member is marked for non-CLS compliance within a CLS compliant class.
And we should stick to the following rules:
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1. Unsigned types should not be part of the public interface of the class. However unsigned types can be part of private members.
2. Unsafe types like pointers should not be used with public members. However they can be used with private members.
3. Class names and member names should not differ only based on their case. For example we cannot have two methods named TheMethod and THEMETHOD.
4. Only properties and methods may be overloaded, Operators should not be overloaded.