What is the difference between the internal
and private
acces开发者_开发知识库s modifiers in C#?
internal is for assembly scope (i.e. only accessible from code in the same .exe or .dll)
private is for class scope (i.e. accessible only from code in the same class).
Find an explanation below. You can check this link for more details - http://www.dotnetbull.com/2013/10/public-protected-private-internal-access-modifier-in-c.html
Private: - Private members are only accessible within the own type (Own class).
Internal: - Internal member are accessible only within the assembly by inheritance (its derived type) or by instance of class.
Reference :
dotnetbull - what is access modifier in c#
internal
members are visible to all code in the assembly they are declared in.
(And to other assemblies referenced using the [InternalsVisibleTo]
attribute)
private
members are visible only to the declaring class. (including nested classes)
An outer (non-nested) class cannot be declared private
, as there is no containing scope to make it private to.
To answer the question you forgot to ask, protected
members are like private
members, but are also visible in all classes that inherit the declaring type. (But only on an expression of at least the type of the current class)
Private members are accessible only within the body of the class or the struct in which they are declared.
Internal types or members are accessible only within files in the same assembly
private - encapsulations in class/scope/struct ect'.
internal - encapsulation in assemblies.
internal members are accessible within the assembly (only accessible in the same project)
private members are accessible within the same class
Example for Beginners
There are 2 projects in a solution (Project1, Project2) and Project1 has a reference to Project2.
- Public method written in Project2 will be accessible in Project2 and the Project1
- Internal method written in Project2 will be accessible in Project2 only but not in Project1
- private method written in class1 of Project2 will only be accessible to the same class. It will neither be accessible in other classes of Project 2 not in Project 1.
Internal will allow you to reference, say, a Data Access static class (for thread safety) between multiple business logic classes, while not subscribing them to inherit that class/trip over each other in connection pools, and to ultimately avoid allowing a DAL class to promote access at the public level. This has countless backings in design and best practices.
Entity Framework makes good use of this type of access
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