What Are Access Modifiers ? Access modifiers are keywords used to specify the declared accessibility of a member or a type. Access modifiers support the concept of encapsulation, which promotes the idea of hiding functionality. Access modifiers allow you to define who does or doesn't have access to certain features. Types Of Access Modifiers: public protected internal private

1. Access modifiers

2. What Are Access Modifiers ?
• Access modifiers are keywords used to specify
the declared accessibility of a member or a type.
• Access modifiers support the concept of
encapsulation, which promotes the idea of
hiding functionality.
• Access modifiers allow you to define who does or
doesn't have access to certain features.

3. Types Of Access Modifiers
• public
• protected
• internal
• private

4. Accessibility Levels
• public
• protected
• internal
• protected internal
• private

5. public
• Public access is the most permissive access level.
• There are no restrictions on accessing public
members.
class SampleClass
{
public int x; // No access restrictions.
}

6. protected
• A protected member is accessible within its class and by derived
class instances.
class A
{
protected int x = 123;
}
class B : A
{
static void Main()
{
B b = new B();
b.x = 10; // Accessible, because this class derives from A.
}
}

7. internal
• Internal types or members are accessible only within
files in the same assembly.
public class BaseClass
{
internal static int x = 0;
}
• A common use of internal access is in component-
based development.

8. protected internal
• Access is limited to the current assembly or
types derived from the containing class.
• Only one access modifier is allowed for a
member or type, except when you use the
protected internal combination.
• You can't declare a class as protected internal
explicitly.

9. private
• Private access is the least permissive access
level.
class Employee
{
private int i; // private access by default
}
• Nested types in the same body can also access
those private members.

10. More about Access Modifiers
• Access modifiers are not allowed on
namespaces.
• If no access modifier is specified in a member
declaration, a default accessibility is used.
• Top-level types, which are not nested in other
types, can only have internal or public
accessibility.
• The default accessibility for these types is
internal.

11. Thank You !