#629 – Nested Types Have Full Access to Members in Parent

When you declare a nested type, the inner type has access to everything in the parent type, even if the items in the parent are declared as private or protected.

    public class Dog
    {
        public string Name { get; set; }

        private string secretName;
        private DogCollar collar;

        public Dog(string name)
        {
            Name = name;
            secretName = "Calypso";
            collar = new DogCollar(this);
        }

        private class DogCollar
        {
            public DogCollar(Dog belongsTo)
            {
                // We can see secretName even though it is private
                Console.WriteLine(string.Format("Secret name is {0}", belongsTo.secretName));
            }
        }
    }


Note that the nested type does not automatically inherit a reference to a particular instance of the parent class. We need to pass this information into the nested type.

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About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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