Access Modifiers and Access Levels

The following access modifiers are available:

C# Modifier	Definition
public	The type or member can be accessed by any other code in the same assembly or another assembly that references it.
private	The type or member can only be accessed by code in the same class.
protected	The type or member can only be accessed by code in the same class or in a derived class.
internal	The type or member can be accessed by any code in the same assembly, but not from another assembly.
protected internal	The type or member can be accessed by any code in the same assembly, or by any derived class in another assembly.
private protected	The type or member can be accessed by code in the same class or in a derived class within the base class assembly.