C # differs from Java on modifiers

The 1.readonly modifier is used only to decorate a data member of a class. As the name says, once they have been written, directly initialized, or assigned in a constructor, the data member can only read it.

The difference between a readonly and a const data member is that const requires you to initialize it directly at the time of declaration.

classMyClass {Const intConstint = -;//Proceed directly    ReadOnly intMyInt =5;//Proceed directly    ReadOnly intMyInt2;  PublicMyClass () {MyInt2=8;//the indirect    }      PublicFunc () {myInt=7;//illegalConsole.WriteLine (myint2.tostring ()); } } 

2.sealed

A class with the sealed modifier does not allow you to inherit any class from it

3.unsafe

You can use the unsafe modifier to define an unsafe context in C #. In an unsafe context, you can insert unsafe code, such as pointers to C + +, etc.

C # differs from Java on modifiers