this is c# revision
oop concepts in c#
Encapsulation
Inheritance
Polymorphism
Abstraction
in this project i use
1/ Encapsulation
2/ Inheritance
3/ Abstraction
Concepts with Windows Forms
instruction
to workrun this project first you have to create database.
get database string and paste(change) DB.cs class.
After that create a table name alluser.
create colomn username,email,password,admin,age.