#289 – You Can Define Multiple Constructors

We can define multiple constructors in a class,  each one taking a different set of parameters.

Here’s an example where we define four different constructors for a Dog object.

        public string Name { get; set; }
        public int Age { get; set; }
        public string Motto { get; set; }

        public Dog(string name)
        {
            Name = name;
            Age = 1;
            Motto = "Happy";
        }

        public Dog(string name, int age)
        {
            Name = name;
            Age = age;
            Motto = "Happy";
        }

        public Dog(string name, string motto)
        {
            Name = name;
            Motto = motto;
            Age = 1;
        }

        public Dog(string name, int age, string motto)
        {
            Name = name;
            Age = age;
            Motto = motto;
        }

We now have four different ways to construct a Dog object.

            Dog d1 = new Dog("Kirby");                        // name
            Dog d2 = new Dog("Jack", 16);                     // name, age
            Dog d3 = new Dog("Ruby", "Look out window");      // name, motto
            Dog d4 = new Dog("Lassie", 71, "Rescue people");  // name, age, motto
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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.

One Response to #289 – You Can Define Multiple Constructors

  1. Pingback: #693 – Named Arguments in Constructors Allow the Most Flexibility « 2,000 Things You Should Know About C#

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