C# Static class
A static class is non-instantiable i.e. a variable of the class can't be created using the new keyword. so, the static class members have to be accessed using the class name itself. - A static class is defined using the keyword static it can only have static data members. if this rule is not followed, there is a compile time error. C# static class contains only static members. C# static class cannot be instantiated. C# static class is sealed. C# static class cannot contain instance constructors