Visibility and Accessibility Modifiers
Static Modifier
The static modifier keywords can be applied to both type declarations and type members. The static modifier changes the semantics of type construction - in that a static class cannot be instantiated, so you cannot use the new keyword to create a new instance.
using System; public static class ...
When you need to access a static member of a class, you use the type name directly. In the example above, I'm using the type name Application to set the Name property.
If you add the static modifer to a class, then all members of that class have to also be marked as static.
// The Application class is marked as static... public static class Application { // .. So all members have to also be static. public static string Name { get; set; } }
However, you can add a static member to a class without the class requiring the static modifier.
// A non static class public class Student { // Can still have static members. public static string GetSchool() { return "MIT"; } }
As before, you still access that static member through the type name, e.g. Student.GetSchool().
Page 10 of 18