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

If you want to do a check and get true for any list/collection/IEnumerable, but get false for type of string, then

   private static bool IsIEnumerable(Type requestType)
   {
      var isIEnumerable = typeof(IEnumerable).IsAssignableFrom(requestType);
      var notString = !typeof(string).IsAssignableFrom(requestType);
      return isIEnumerable && notString;
   }