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Windows Application Development Cookbook

Windows Application Development Cookbook

By : Marcin Jamro
Buy this Book
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Windows Application Development Cookbook

Windows Application Development Cookbook

By: Marcin Jamro
Buy this Book

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 (11 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Sections
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Conventions
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Reader feedback
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Customer support
Lock Free Chapter
1
1. Getting Started
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1. Getting Started
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Introduction
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Setting up the IDE
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Arranging windows
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Creating a new project
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Running the application
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Adding a new page
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Placing a control
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Handling events
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Navigating between pages
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Passing data between pages
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Handling the back button
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Changing a default page
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Modifying the back stack
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Utilizing additional features of the emulator
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Breakpoints-based debugging
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Step-by-step debugging
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Executing code while debugging
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Logging information while debugging
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Monitoring the CPU and memory usage
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2. Designing a User Interface
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2. Designing a User Interface
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Introduction
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Adding a button
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Adding a text block
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Adding a textbox
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Adding a password box
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Adding a checkbox
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Adding a combobox
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Adding a listbox
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Adding an image
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Adding controls programmatically
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Arranging controls vertically
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Arranging controls horizontally
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Arranging controls in a scrollable view
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Defining a page-limited style
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Defining a global style
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Applying styles programmatically
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Arranging controls in a grid
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Arranging controls in absolute positions
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Choosing date and time
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Adding icons to app bars
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Creating and using a user control
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Presenting a message dialog
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Adjusting design based on the device type
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Localizing content in XAML
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Localizing content programmatically
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Forcing the current language
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3. MVVM and Data Binding
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3. MVVM and Data Binding
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Introduction
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Creating the view model for a page
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Introducing bindings and commands
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Binding a value to a textbox
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Binding with a value converter
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Using value converters with parameters
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Showing a progress bar during calculations
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Binding a collection to a list view
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Binding a collection to a grid view
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Binding a collection to a combobox
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Binding a collection to a hub
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4. Data Storage
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4. Data Storage
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Introduction
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Creating a directory
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Reading a structure of directories
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Creating a file
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Iterating through files
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Renaming a directory
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Renaming a file
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Removing a directory
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Removing a file
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Writing a text file
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Reading a text file
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Writing an XML file
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Reading an XML file
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Writing a JSON file
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Reading a JSON file
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Writing a binary file
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Reading a binary file
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Creating a SQLite database and tables
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Storing data in a SQLite database
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Selecting data from a SQLite database
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Updating data in a SQLite database
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Removing data from a SQLite database
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5. Animations and Graphics
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5. Animations and Graphics
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Introduction
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Animating the showing of controls
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Using animation to hide controls
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Adding animation to show the collection of items
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Animating the repositioning of items' collection
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Animating the color of an element
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Animating the size of an element
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Animating the position of an element
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Animating the rotation of an element
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Animating the font size of an element
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Drawing shapes programmatically
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Handling the tap touch event
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Handling the pinch touch event
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Handling the rotate touch event
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Handling the pinch and rotate touch events
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Rendering 3D graphics
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6. Multimedia
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6. Multimedia
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Introduction
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Playing a movie clip
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Playing an audio file
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Presenting a collection of photos
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Preparing a photo album with captions
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Modifying an image
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Converting an image into grayscale
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Recoloring an image
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Choosing a file to open
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Choosing a file to save
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Taking an image from a camera
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Recording a movie from a camera
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Scanning a QR code
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Synthesizing speech
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Recognizing speech
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7. Built-in Sensors
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7. Built-in Sensors
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Introduction
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Detecting motion using an accelerometer
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Reading data from a compass
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Obtaining the orientation of a device
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Reading data from a light sensor
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Launching vibrations
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Reading NFC tags
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Obtaining the current GPS location
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Disabling switching off the screen
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8. Internet-based Scenarios
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8. Internet-based Scenarios
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Introduction
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Opening a website in a default browser
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Presenting a website within a page
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Composing an e-mail message
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Starting a phone call
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Launching a Skype call
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Opening a map in an external application
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Showing a map within a page
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Drawing icons, polylines, and polygons on a map
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Adding a custom marker to a map
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Getting the coordinates of a clicked point on a map
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Launching GPS-based navigation
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Calling API methods
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Downloading a file from the Internet
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9. Testing and Submission
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9. Testing and Submission
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Introduction
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Creating a unit test
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Running a set of tests
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Adding a project to the Windows Dev Center
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Associating an application with the store
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Adjusting the manifest file
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Obtaining a map token
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Receiving push notifications
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Preparing files for submission
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Submitting the application
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Updating the application
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Generating promotional codes
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Browsing reviews and ratings
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Analyzing acquisitions
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A. Useful Resources
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A. Useful Resources
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Getting started
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Designing a User Interface
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MVVM and data binding
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Data storage
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Animations and graphics
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Multimedia
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Built-in sensors
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Internet-based scenarios
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Testing and submission

Drawing shapes programmatically

As you have already seen in this chapter, basic shapes, such as rectangles, ellipses, or lines, can be defined declaratively in the XAML language. However, they can also be created programmatically using the C# language, as you will see in this recipe.

As an example, you will create a simple page with the Canvas control, where a rectangle, an ellipse, a polygon, a polyline, and a set of lines will be drawn.

Getting ready

To step through this recipe, you need only the automatically generated project.

How to do it...

To prepare the example that draws a rectangle, an ellipse, a polygon, a polyline, and a set of lines programmatically, perform the following steps:

  1. Add a canvas to the page by modifying the MainPage.xaml file, as follows:

            <Page (...)> 
            <Grid> 
                <Canvas x:Name="Canvas" /> 
            </Grid> 
        </Page>

  2. Prepare a method to draw a green rectangle (of size 100 x 100 pixels with rounded...

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