Determine if object derives from collection type

Question

I want to determine if a generic object type (\"T\") method type parameter is a collection type. I would typically be sending T through as a Generic.List but it could be any co

Answer 1

In order to get the actual type of T at runtime, you can use the typeof(T) expression. From there the normal type comparison operators will do the trick

bool isEnumerable = typeof(IEnumerable).IsAssignableFrom(typeof(T));

Full Code Sample:

static bool Foo()
{
  return typeof(IEnumerable).IsAssignableFrom(typeof(T));
}

Foo>();  // true
Foo(); // false