#714 – Accessibility of a Public Method in an Internal Type

When you declare a class with an accessibility of internal, the class is usable only from code within the same assembly.  If this class then contains a member whose accessibility is public, that member is still limited to an accessibility level of internal.  A member of a class cannot be more accessible than the class itself.

This makes sense.  If we have code that doesn’t know about about a DogCollar class, it certainly can’t invoke the ReportSize method of the DogCollar class.

    // Can only use DogCollar within this assembly
    internal class DogCollar
    {
        // Marked as public, but effectively internal
        public double Size { get; set; }

        public DogCollar(double size)
        {
            Size = size;
        }

        // Also effectively internal
        public void ReportSize()
        {
            Console.WriteLine(string.Format("Collar is {0} in long", Size));
        }
    }
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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.

2 Responses to #714 – Accessibility of a Public Method in an Internal Type

  1. in fact internal makes no sense 😀

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