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What is a CLS (Common Language Specification) In .Net Framework

This is a subset of the CTS, which all .NET languages are expected to support. It was always a dream of Microsoft to unite all different languages in to one umbrella and CLS is one-step towards that. Microsoft has defined CLS, which are nothing but guidelines, that language should follow so that it can ommunicate with other .NET languages in a seamless manner.

CTS , CLS Explaition :

CTS is a base class library that contains all type information like Int32, Int64, String Boolean etc.  CLR understands only base type of library type not others type like CLR dont know what is int (C#) or Integer (VB) CLR only know Int32 type, So what about the CLS - CLS just a documentation that map base type into different - 2 language datatype, compiler reads and converts language datatype to documented base type (i.e CTS type) e.g compiler reads the associated base type of int(C# Integer in VB) is Int32 from CLS guidelines and convert it to Int32.

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