#769 – Pattern – Call a Base Class Method When You Override It

You can call a method in a class’ base class using the base keyword. You can do this from anywhere within the child class, but  it’s a common pattern to call the base class method when you override it.  This allows you to extend the behavior of that method.

Here’s an example.

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

        public Dog(string name, int age)
            Name = name;
            Age = age;

        public virtual void DumpInfo()
            Console.WriteLine(string.Format("Dog {0} is {1} years old", Name, Age));

    public class Terrier : Dog
        public double GrowlFactor { get; set; }

        public Terrier(string name, int age, double growlFactor)
            : base(name, age)
            GrowlFactor = growlFactor;

        public override void DumpInfo()

            Console.WriteLine(string.Format("  GrowlFactor is {0}", GrowlFactor));


            Terrier t = new Terrier("Jack", 17, 9.9);



About Sean
Software developer in the Twin Cities area, passionate about software development and sailing.

2 Responses to #769 – Pattern – Call a Base Class Method When You Override It

  1. Pingback: Dew Drop – January 30, 2013 (#1,490) | Alvin Ashcraft's Morning Dew

  2. Pingback: Interesting .NET Links – January 31 , 2013 | TechBlog

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