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Modifiers (C# Reference)

Modifiers are used to modify declarations of types and type members. This section introduces the C# modifiers.

Modifier

Purpose

Access Modifiers

Specifies the declared accessibility of types and type members.

abstract

Indicates that a class is intended only to be a base class of other classes.

async

Indicates that the modified method, lambda expression, or anonymous method is asynchronous.

const

Specifies that the value of the field or the local variable cannot be modified.

event

Declares an event.

extern

Indicates that the method is implemented externally.

new

Explicitly hides a member inherited from a base class.

override

Provides a new implementation of a virtual member inherited from a base class.

partial

Defines partial classes, structs and methods throughout the same assembly.

readonly

Declares a field that can only be assigned values as part of the declaration or in a constructor in the same class.

sealed

Specifies that a class cannot be inherited.

static

Declares a member that belongs to the type itself instead of to a specific object.

unsafe

Declares an unsafe context.

virtual

Declares a method or an accessor whose implementation can be changed by an overriding member in a derived class.

volatile

Indicates that a field can be modified in the program by something such as the operating system, the hardware, or a concurrently executing thread.

See Also

Reference

C# Keywords

Concepts

C# Programming Guide

Other Resources

C# Reference