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 dispatcher's new features

The Dispatcher class is a very common way of accessing the UI thread while we are on another thread.

With WPF 4.5 we have some new methods for synchronous and asynchronous operations, which make this Dispatcher class more async and await friendly. Another improvement is that Dispatcher.Invoke and Dispatcher.InvokeAsync are now able to return a value.

Finally, we also have a new parameter of CancellationToken type, which provides the obvious capability of being able to cancel dispatched tasks.

Getting ready

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

How to do it...

In the following steps we will see how to use the Dispatcher class to dispatch a task that accesses the UI thread.

  1. First open Visual Studio 2012 and create a new project. We will select the WPF Application template from the Visual C# category and name it WPFDispatcher.

  2. Open the MainWindow.xaml view and add a Button Click event, name it btnDispatcher and enter 1 as the content...