Introduction to Object Oriented Programming Concepts (OOP) and More

F# has clean syntax, powerful multi-threading capabilities, and fluid interoperability with other Microsoft .NET Framework languages. We'll give you an introduction to functional programming concepts and how they're implemented in F#.

Chris Marinos

MSDN Magazine April 2010

This month we look at implementing the Active Record Pattern in your .NET application and how aspect-oriented programming yields separation of concerns.

Scott Mitchell

MSDN Magazine February 2009

Ray Djajadinata

MSDN Magazine May 2007

Aspect-oriented Programming (AOP), a paradigm invented at Xerox PARC in the 1990s, lets the developer better separate tasks that should not be inextricably tangled, such as mathematical operations and exception handling. The AOP approach has a number of benefits. First, it improves performance because the operations are more succinct. Second, it allows programmers to spend less time rewriting the same code. Overall, AOP enables better encapsulation of distinct procedures and promotes future interoperation.

Dharma Shukla, Simon Fell, and Chris Sells

MSDN Magazine March 2002

Hello programmers,

I don't know if this is the right forum to post this in but here it goes anyway...

I am wondering into the unknown field of OOA and was looking for a way to separate my business logic from my UI. A small example is as followed:

Two DropDowns where the second one is depended on the selection in the first DropDown. You have Cars, planes, etc. inm the first DropDown and Toyota, Chrysler, etc in the second (depending on the value in the first DD.

I have som Lin syntax. The file is situated in the App_Code folder and NOT as code behind.

    public class GetProductCategoriesClass
    {

        //Henter data fra databasen og gemmer det som ProductCategory
        public static List<ProductCategory> GetProductCategoriesMethod()
        {
            DataClassesDataContext cate = new DataClassesDataContext();
            return (from p in cate.ProductCategories.ToList<ProductCategory>()
                    select p).ToList<ProductCategory>();

        }


    }
    public class GetProductSubCategoriesClass
    {

        //Henter data fra databasen og gemmer det som ProductSubCategory
        public static List<ProductSubCategory> GetProductSubCategoriesMethod()
        {
            DataClassesDataContext cate = new DataClassesDataContext();
            return (from p in cate.P