Declaring and Using Instance Fields in a Class

In a class, an instance field is a kind of class member that is a variable declared in the class and having a particular type.  There is one copy of the field for each instance of the class.  You can read and write the value of the field using a reference to the instance of the class.

Fields are declared in a class as follows:

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

These fields can then be used as follows:

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Dog buster = new Dog();  // Create new instance of Dog buster.Name = "Buster";  // Write to Name field buster.Age = 3;          // Write to Age field   Dog kirby = new Dog();   // Another instance of a Dog kirby.Name = "Kirby"; kirby.Age = 13;   // Reading properties int agesAdded = buster.Age + kirby.Age;

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