Classes
As C# is a object oriented programming language, is uses objects and classes.
Mean that we can use repeatable things.
So if you where createng a book store online and wanted to store book info you could make a class which has all the information store in object.
Create a class:
class Book
{
public string title;
public string author;
public int pages;
}
Create a object of class
{
Book book1 = new Book();
book1.title = "HP title";
book1.author = "HP Author";
book1.page = 400;
}