In C#, a namespace is a collection of related types. The fully qualified name of every type actually includes the namespace that it’s defined in.
You use the namespace keyword to define a namespace. All types defined within the pair of braces that follow the namespace name then belong to that namespace.
In the example below, the Dog class belongs to the DogLibrary namespace.
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| namespace DogLibrary{ public class Dog { public string Name { get; set; } public int Age { get; set; } public void Bark() { Console.WriteLine("WOOOOOF!"); } }} |
Because Dog is defined within the DogLibrary namespace, the fully qualifed name of the Dog type isDogLibrary.Dog.