book

.NET MAUI for C# Developers

Name: .NET MAUI for C# Developers
ISBN: 9781837631698

by Jesse Liberty, Rodrigo Juarez

March 2023

Intermediate to advanced

296 pages

5h 43m

English

Packt Publishing

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.NET MAUI for C# Developers
ForewordContributorsAbout the authorsAbout the reviewers
Preface
Who this book is forWhat this book coversTo get the most out of this bookDownload the example code filesDownload the color imagesConventions usedGet in touchShare Your ThoughtsDownload a free PDF copy of this book
Part 1 – Getting Started
Chapter 1: Assembling Your Tools and Creating Your First App
Technical requirementsGetting and installing Visual StudioInstalling Visual StudioGitOpening Visual StudioQuick tour of the appSummaryQuizYou try it
Chapter 2: What We Will Build: Forget Me Not
Technical requirementsWhat is Forget Me Not?BuddiesInviting BuddiesOther pagesWhat you’ll learnSummary
Chapter 3: XAML and Fluent C#
Technical requirementsUnderstanding the structure of XAMLThe code-behind fileExploring the layout optionsVerticalStackLayoutImageLabelCode-behind and event handlersIf you can do it in XAML, you can do it in C#C# versus Fluent C#SummaryQuizTry it out
Chapter 4: MVVM and Controls
Technical requirementsSetting up for MVVMCreating foldersThe MVVM Community ToolkitExploring viewsForget Me Not labelsData bindingCreating a public propertySetting up BindingContextAssigning values to the View Model class propertiesImplementing BindingViewModel versus code-behindViewsImagesButton propertiesImageButtonTapGestureRecognizerEntering textBehaviorsPopups and dialogsPresenting the user with a choiceActionSheetDisplaying a promptToastSnackbarBoxViewFrameBrushesThe Solid brushLinearGradientBrushRadialGradientBrushSummaryQuizYou try it
Chapter 5: Advanced Controls
Technical requirementsKeeping the user informed of activityActivityIndicatorProgressBarMoving event handling to ViewModelBreaking it downSending and receiving messagesGetting started with WeakReferenceMessengerCreating the page in C#Displaying collectionsOverriding OnAppearingUnderstanding how the service worksDisplaying the collection of Preference objectsThe code-behindStylesExplicit versus implicit stylesStyle inheritance or BasedOnSummaryQuizYou try it
Chapter 6: Layout
Technical requirementsStack layoutsGridSizing rows and columnsNamed rows and columnsScrollViewFlexLayoutSummaryQuizYou try it
Part 2 – Intermediate Topics

Chapter 7: Understanding Navigation
Technical requirementsExploring the TabBarCreating the About and Buddies pagesAssembling the About pageShell navigationRoutingPassing values from page to pagePassing values with the url (?) syntaxPassing values with a dictionarySummaryQuizYou try it
Chapter 8: Storing and Retrieving Data
Technical requirementsStoring user preferencesUserPreferencesViewModelNavigating to UserPreferencesRetrieving the preferencesStoring to a database on your deviceInstalling SQLiteGetting started with SQLiteThe Database classCRUDLocal or remote?SummaryQuizYou try it
Chapter 9: Unit Testing
Technical requirementsWhy create unit tests?Vote early and vote oftenCreating unit testsSetting the project referenceCreating the first unit testTweaking the project fileRunning the testForgetMeNotDemo unit testsImplementing the triple-A patternWhat’s wrong with this test?MocksDependency injectionCreating an interfaceModifying the class constructorThe .NET MAUI IoC containerRegistering your interfaces, services, and ViewModelsUsing the NSubstitute packageAdding NSubstitute to your test fixtureTesting corner casesSummaryQuizYou try it
Part 3 – Advanced Topics
Chapter 10: Consuming REST Services
Technical requirementsUsing REST ServicesThe Forget Me Not API architectureCreating the projectsFleshing out the modelsExamining the API domain objectsReviewing DTOsOther DTO filesUnderstanding ForgetMeNot.APIClientAuthenticationProfileThe Buddy regionUsing the APICreating the accountModifying the Login pageUpdating LoginPageThe AccountService classUpdating LoginViewModelUsing AccountService to log inSetting up the Create Account pageSetting up CreateAccountViewModelHandling the SignUp commandWhat to do if it won’t buildSummaryQuizYou try it
Chapter 11: Exploring Advanced Topics
Technical requirementsSelecting data templates at runtimeDeclaring ItemTemplates as resourcesThe DataTemplate selectionThe DataTemplateSelector classAdding the template selector to the page’s resourcesAdding DataTemplateSelector to CollectionViewManaging Visual StateDefining the common visual statesA button VisualState exampleUtilizing Community Toolkit behaviorsTaking action with triggersSummaryQuizYou try it
Assessments
Chapter 1, Assembling Your Tools and Creating Your  First AppChapter 3, XAML and Fluent C#Chapter 4, MVVM and ControlsChapter 5, Advanced ControlsChapter 6, LayoutChapter 7, Understanding NavigationChapter 8, Storing and Retrieving DataChapter 9, Unit TestingChapter 10, Consuming REST ServicesChapter 11, Exploring Advanced Topics
Index
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Content preview from .NET MAUI for C# Developers

Assessments

This section contains answers to questions from all chapters.

Chapter 1, Assembling Your Tools and Creating Your  First App

You can create a new project from the launch dialog by choosing Create a new project. If you’ve been brought directly into Visual Studio, by clicking on File | New Project.
Use View | Solution Explorer.
The .xaml extension indicates that the file contains XAML markup.
The code-behind file.
MauiProgram.cs.

Chapter 3, XAML and Fluent C#

XAML is a markup language based on XML.
XAML is used in .NET MAUI for declaring layouts and controls.
Rather than writing in XAML, you can create your layouts and controls in C#.
We nest a layout or a control inside a layout by using the Children property.
An event handler is ...

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