#648 – Using an Object Initializer

You typically initialize the data members of an object by invoking one of the object’s constructors and passing it any information that it requires.  For example:

Dog kirby = new Dog("Kirby", 14);

If a parameterless constructor exists for the class, you can alternatively create the object without invoking a constructor, using the object initializer syntax shown below.

Dog kirby = new Dog { Name="Kirby", Age=14 };

This is functionally equivalent to:

Dog kirby = new Dog();
kirby.Name = "Kirby";
kirby.Age = 14;

If a parameterless constructor does not exist for the class, you can still use the object initializer syntax, but only after explicitly invoking one of the constructors.

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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.

6 Responses to #648 – Using an Object Initializer

  1. Pingback: #655 – Initializing Only Some Properties with An Object Initializer « 2,000 Things You Should Know About C#

  2. Pingback: #656 – Nested Object Initializers « 2,000 Things You Should Know About C#

  3. Pingback: #703 – Object Initializers Allow Setting Either Fields or Properties « 2,000 Things You Should Know About C#

  4. Pingback: #833 – Some Examples of Anonymous Object Initializers | 2,000 Things You Should Know About C#

  5. Pingback: #836 – Initializing a Generic List with an Object Initializer | 2,000 Things You Should Know About C#

  6. Pingback: #837 – Object Initializers within Collection Initializers | 2,000 Things You Should Know About C#

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