Why C# structs do no support inheritance


A common question asked by C# developers is why structs (the representation of .NET value types in the C# language) do not support inheritance whereas classes (.NET reference types) do?

I see three reasons:

  • Design choice
  • Conflict with array covariance
  • Memory management

As C# is the main language of the .NET platform I’ll use the term struct in this article instead of value type.

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