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

Step-by-step debugging


Debugging with breakpoints is a powerful technique that you can use to find a source of the problem in your applications. However, it is also useful to check its execution line by line. Of course, such a task can be accomplished by placing a breakpoint in each line, but this may be cumbersome for a developer. For this reason, this recipe will show you how to debug the application with step-by-step debugging.

Getting ready

To complete this recipe, you need the project with two pages, represented by the MainPage and ProductsPage classes. It is necessary to pass a category identifier while navigating from MainPage to ProductsPage. You should start the debugging of the project and stop it at any breakpoint.

How to do it...

To perform the step-by-step debugging, you need to perform the following steps:

  1. To execute a single line and stop in the following line, press F10 or click on the Step Over icon in the toolbar. As a result, the next line will be marked with the yellow background, as shown in the following screenshot.

  2. To step into a method that is called within the line, where debugging has stopped, press F11 or click on the Step Into icon in the toolbar.

  3. To go to the line where the cursor is currently located, press Ctrl + F10 or choose the Run To Cursor option from the context menu of the line with the cursor.

There's more...

The values of variables can be checked in a few ways, such as by placing the cursor over the name of the variable. However, when you want to see the values of a few variables in the following iterations within a loop, it is much more convenient to pin tooltips with their current values so they are automatically refreshed in each iteration. You can pin the tooltip by placing the cursor over the name of the variable and then pressing the pin icon. The exemplary result is shown in the preceding screenshot.

See also

  • The Breakpoint-based debugging recipe

  • The Executing code while debugging recipe

  • The Logging information while debugging recipe

  • The Creating a unit test and Running a set of tests recipes in Chapter 9, Testing and Submission