To start with, LINQ stands for “Language Integrated QUery.” LINQ fundamentally is about integrating query operations into the .NET platform in a comprehensive and open manner. It’s also about providing a unified way for you to query across any kind of data that you have in your program, whether it’s relational, objects or XML. This, we believe, will represent a tectonic shift in the way that VB programmers will work with data. The possibilities that having query capabilities always available right at your fingertips, regardless of the type of data you’re working with, are immense and will fundamentally alter the way people program.
The core of LINQ is a set of API patterns. I say “patterns” instead of “interfaces” or “classes” because we want to maintain maximum flexibility in our ability to provide querying for any kind of data, regardless of whether it has a particular object model or interface implemented. These API patterns specify how an object model can become “queryable,” and they cover all the basic query operations that we know and love: projection (select), filter (where), grouping (group by), ordering (order by), joining (join), etc. By implementing this API pattern, any data provider on .NET can become queryable. There is also a lot of flexibility as to how a data provider can become flexible — i.e., whether it wants to delegate most of the work on querying or whether it wants to do all the work itself.
(It’s also important to note that these patterns are fully compatible with .NET 2.0 and require no additional platform features. They’re totally implementable in VS 2005, so you won’t need a new CLR to use them.)
WPF
WPF is Microsoft’s strategic presentation technology for Windows smart client user experiences. Use WPF to deliver innovative user interfaces through support for UI, media, document services, hardware acceleration, vector graphics, resolution-independent DPI for different form factors, data visualization, and superior content readability. Increase developer-designer productivity and collaboration through Visual Studio, Microsoft Expression Interactive Designer, and XAML. Write code once, and deploy as stand-alone client or in a browser. Incrementally embrace WPF through interoperability with Win32 and Windows Forms. Leverage vested knowledge in .NET Framework, CLR languages and Visual Studio IDE. Derive business value through new paradigms of user experiences, business intelligence through data visualizations, brand awareness through differentiated customer experiences, and customer loyalty through higher customer satisfaction.
Windows Communication Foundation(WCF)
Windows Communication Foundation (WCF), formerly code-named "Indigo," is about to radically change the face of distributed programming for developers using the Microsoft .NET Framework. WCF unifies the existing suite of .NET distributed technologies into a single programming model that improves the overall developer experience through a consistent architecture, new levels of functionality and interoperability, and all the extensibility points you could want. This article introduces you to WCF programming and shows you how to get started.
As its name suggests, WCF provides the .NET Framework with a basis for writing code to communicate across components, applications, and systems. WCF was designed according to the tenets of service orientation. A service is a piece of code you interact with through messages. Services are passive. They wait for incoming messages before doing any work. Clients are the initiators. Clients send messages to services to request work.
Windows Communication Foundation provides a new library of classes found in the System. ServiceModel namespace that bring these service-oriented concepts to life. This is what's typically referred to as the WCF programming model.
http://wpf.netfx3.comServices expose one or more endpoints where messages can be sent. Each endpoint consists of an address, a binding, and a contract. The address specifies where to send messages. The binding describes how to send messages. And the contract describes what the messages contain. Clients need to know this information before they can access a service.
Services can package up endpoint descriptions to share with clients, typically by using Web Services Description Language (WSDL). Then clients can use the provided service description to generate code within their environment capable of sending and receiving the proper messagesWindows Communication Foundation provides a new library of classes found in the System. ServiceModel namespace that bring these service-oriented concepts to life. This is what's typically referred to as the WCF programming model.
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