C# doesn’t allow structs to derive from classes Your statement is incorrect, hence your confusion. C# does allow structs to derive from classes. All structs derive from the same class, System.ValueType, which derives from System.Object. And all enums derive from System.Enum. UPDATE: There has been some confusion in some (now deleted) comments, which warrants clarification. … Read more
Strings aren’t value types since they can be huge, and need to be stored on the heap. Value types are (in all implementations of the CLR as of yet) stored on the stack. Stack allocating strings would break all sorts of things: the stack is only 1MB for 32-bit and 4MB for 64-bit, you’d have … Read more
In .NET, there are two categories of types, reference types and value types. Structs are value types and classes are reference types. The general difference is that a reference type lives on the heap, and a value type lives inline, that is, wherever it is your variable or field is defined. A variable containing a … Read more
Your examples are a little odd because while int, bool and float are specific types, interfaces and delegates are kinds of type – just like struct and enum are kinds of value types. I’ve written an explanation of reference types and value types in this article. I’d be happy to expand on any bits which … Read more