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If I'm understanding you correctly, you're trying to find a statically-typed way to say "a value of type Section can be either a value of type Highlights, Chart, or Tweets". There are many terms for this, including tagged union, discriminated union, variant, or sum type but they all refer to the same concept. Sum types are a standard feature in statically-typed functional programming languages, but with a bit of ingenuity you can roll your own in C#. Using that answer as a template, and adding sealed to make sure no one adds any extra subclasses, your Section type would look something like this:

If I'm understanding you correctly, you're trying to find a statically-typed way to say "a value of type Section can be either a value of type Highlights, Chart, or Tweets". There are many terms for this, including tagged union, discriminated union, variant, or sum type but they all refer to the same concept. Sum types are a standard feature in statically-typed functional programming languages, but with a bit of ingenuity you can roll your own in C#. Using that answer as a template, and adding sealed to make sure no one adds any extra subclasses, your Section type would look something like this:

It's not entirely clear to me what your problem is, but if I'm understanding you correctly, you're trying to find a statically-typed way to say "a value of type Section can be either a value of type Highlights, Chart, or Tweets". There are many terms for this, including tagged union, discriminated union, variant, or sum type but they all refer to the same concept. Sum types are a standard feature in statically-typed functional programming languages, but with a bit of ingenuity you can roll your own in C#. Using that answer as a template, and adding sealed to make sure no one adds any extra subclasses, your Section type would look something like this:

If I'm understanding you correctly, you're trying to find a statically-typed way to say "a value of type Section can be either a value of type Highlights, Chart, or Tweets". There are many terms for this, including tagged union, discriminated union, variant, or sum type but they all refer to the same concept. Sum types are a standard feature in statically-typed functional programming languages, but with a bit of ingenuity you can roll your own in C#. Using that answer as a template, and adding sealed to make sure no one adds any extra subclasses, your Section type would look something like this:

You could just as easily have a collection of Sections and operate on them that way when you iterate over it.