Book Image

Microsoft .NET Framework 4.5 Quickstart Cookbook

By : Jose Luis Latorre
Book Image

Microsoft .NET Framework 4.5 Quickstart Cookbook

By: Jose Luis Latorre

Overview of this book

With about ten years since its first release, Microsoft's .NET Framework 4.5 is one of the most solid development technologies to create casual, business, or enterprise applications. It has evolved into a very stable framework and solid framework for developing applications, with a solid core, called the CLR (Common Language Runtime) Microsoft .NET Framework 4.5 includes massive changes and enables modern application and UI development."Microsoft .Net Framework 4.5 Quickstart Cookbook" aims to give you a run through the most exciting features of the latest version. You will experience all the flavors of .NET 4.5 hands on. The “How-to” recipes mix the right ingredients for a final taste of the most appetizing features and characteristics. The book is written in a way that enables you to dip in and out of the chapters.The book is full of practical code examples that are designed to clearly exemplify the different features and their applications in real-world development. All the chapters and recipes are progressive and based on the fresh features on .NET Framework 4.5.The book will begin by teaching you to build a modern UI application and improve it to make it Windows 8 Modern UI apps lifecycle model-compliant. You will create a portable library and throttle data source updating delays. Towards the end of the book, you will create you first Web API.
Table of Contents (19 chapters)
Microsoft .NET Framework 4.5 Quickstart Cookbook
About the Author
About the Reviewers

Using the asynchronous features of WCF

One issue with the previous versions of WCF was that its service contracts did not contain definitions of its asynchronous members, resulting in unnecessary complexity in the WCF code when using asynchronous calls. Furthermore, the code was prone to timeouts and error-handling issues.

There are some scenarios that require these kinds of asynchronous calls:

  • Executing multiple requests in parallel and continuing when they have finished.

  • Executing a sequence of requests and stopping if one of them fails.

  • Performing a hierarchy of operations that can occur sequentially, and also executing various requests in parallel after a given one. This is, in effect, a combination of the previous two types.

WCF 4.5 simplifies this behavior and also makes the web services easily testable.

Next, we will explore how to implement an asynchronous web service and consume it.

Getting ready

In order to use this recipe, you should have Visual Studio 2012 installed.

How to do it...