Book Image

Windows Application Development Cookbook

By : Marcin Jamro
Book Image

Windows Application Development Cookbook

By: Marcin Jamro

Overview of this book

Need to ensure you can always create the best Windows apps regardless of platform? What you need are solutions to the biggest issues you can face, so you can always ensure you’re making the right choices and creating the best apps you can. The book starts with recipes that will help you set up the integrated development environment before you go ahead and design the user interface. You will learn how to use the MVVM design pattern together with data binding, as well as how to work with data in different file formats. Moving on, you will explore techniques to add animations and graphics to your application, and enable your solution to work with multimedia content. You will also see how to use sensors, such as an accelerometer and a compass, as well as obtain the current GPS location. You will make your application ready to work with Internet-based scenarios, such as composing e-mails or downloading files, before finally testing the project and submitting it to the Windows Store. By the end of the book, you will have a market-ready application compatible across different Windows devices, including smartphones, tablets, and desktops.
Table of Contents (17 chapters)
Windows Application Development Cookbook
Credits
About the Author
Acknowledgements
About the Reviewer
www.PacktPub.com
Preface

Showing a progress bar during calculations


While performing some time-consuming calculations or downloading data from the Internet, it is a good idea to present a progress bar showing that a longer operation is currently in progress and the user would need to wait. In this recipe, you will learn how to show the progress bar during calculations and how to hide it when calculations are completed.

Getting ready

To step through this recipe, you need the automatically generated project configured according to the MVVM design pattern, as described in the Creating the view model for a page recipe.

How to do it...

To create a page with a progress bar shown during calculations, and hidden automatically when calculations are completed, perform the following steps:

  1. Define a BoolToVisibilityNegatedConverter class implementing the IValueConverter interface in the BoolToVisibilityNegatedConverter.cs file in the Models directory:

            public class BoolToVisibilityNegatedConverter :  
                IValueConverter...