What you will learn in .NET MAUI in Action
Chapter by chapter
Concepts explained in this book
- MAUI.NET MAUI is Microsoft's cross-platform framework for building native applications for Android, iOS, macOS, and Windows.
- viewA view is a .NET MAUI user-interface element that appears onscreen, including layouts, controls, and pages.
- styleA Style is a .NET MAUI object that groups property setters, triggers, and visual-state configuration for one or more views.
- GitHub Actions secretA GitHub Actions secret is an encrypted repository, environment, or organization value exposed to workflows without revealing its stored content.
- model-view-viewmodelMVVM is an architectural pattern that separates a UI view, its stateful view model, and the application's domain model.
- data triggerA data trigger is a XAML behavior that changes a target property's value when a bound data value meets a specified condition.
- GitHub ActionsGitHub Actions is a GitHub service for automating software development workflows such as building, testing, and deploying repository code.
- CollectionViewCollectionView is a .NET MAUI control that displays a scrollable collection of items using configurable item templates.
- view modelA view model is a data transfer object that aggregates the data required to render a particular view, without providing application functionality.
- XAMLXAML is a declarative XML-based language for defining user interfaces and related application objects.
- VerticalStackLayoutVerticalStackLayout is a .NET MAUI layout that arranges child views sequentially along a vertical axis.
- DataTemplateDataTemplate is a definition of the user-interface structure used to display an object or collection item.
- ShellA Shell app is a .NET MAUI application whose pages and navigation structure are managed by Shell.
- dependency injectionDependency injection is a technique in which an object receives its required dependencies from an external provider rather than constructing them itself.
- data bindingData binding is a technique that connects user-interface properties to source-object properties or commands so values and actions can be synchronized.
- tabA tab is a selectable user-interface item representing one section of content within a tab bar or hierarchical Shell navigation.
- flyout navigationA flyout is a dismissible navigation panel that slides into view to present supplemental content or menu items.
- binding contextA binding context is the object whose properties supply values for data bindings in a user-interface element or template.
- GitHub-hosted runnerA GitHub-hosted runner is a virtual machine managed by GitHub that executes jobs in a GitHub Actions workflow.
- dependency inversionDependency inversion is a design principle in which higher-level code depends on abstractions rather than concrete implementation details.
- ScrollViewScrollView is a .NET MAUI UI container that enables scrolling through content larger than the visible screen area.
- FlexLayoutFlexLayout is a .NET MAUI layout that arranges child views in rows or columns with configurable wrapping, spacing, alignment, and flexible flow-based positioning.
- menu itemMenuItem is a .NET MAUI Shell element representing an actionable item in a flyout menu that invokes an action instead of navigating to a page.
- AppThemeBindingAppThemeBinding is a .NET MAUI markup feature that supplies different property values according to the active application theme.
- INotifyPropertyChangedINotifyPropertyChanged is a .NET interface that exposes an event for notifying clients when an object's property value changes.
- custom controlA custom control is a user-defined .NET MAUI interface control that extends or composes standard control behavior.
- ItemsSourceItemsSource is a collection-view property that identifies the collection of items to display.
- .NET MAUI appA .NET MAUI app is an application built with .NET MAUI for supported mobile and desktop platforms.
- ActivityIndicatorActivityIndicator is a .NET MAUI control that displays an animated indication of ongoing activity.
- access tokenAn access token is a credential that authorizes a client to access protected resources on behalf of a principal.
- Visual StudioVisual Studio is an integrated development environment for building, debugging, testing, and deploying software.
- .NET MAUI Community ToolkitThe .NET MAUI Community Toolkit is a community-maintained library providing extensions, controls, behaviors, converters, and other features for .NET MAUI applications.
- ResourceDictionaryResourceDictionary is a XAML dictionary that maps reusable resources, such as styles and templates, to keys.
- SecureStorageSecureStorage is a .NET MAUI API that stores values as encrypted key-value data using a cryptographic key managed by the operating system.
- compiler directiveA compiler directive is a source-code instruction that controls compilation behavior, including conditional compilation for selected platforms.
- light/dark modeDark mode is an interface appearance mode that uses a predominantly dark color scheme.
- DynamicResourceDynamicResource is a .NET MAUI XAML markup extension that resolves a resource by key and updates consumers when that resource changes at runtime.
- AppendToMappingAppendToMapping is a .NET MAUI handler-mapper method that registers customization logic to run after the handler's default mappings.
- PageA Page is a .NET MAUI full-screen view used to define an application page.
- native APIA native platform API is an operating-system-provided programming interface for accessing platform-specific capabilities.
- custom URL schemeA custom URL scheme is an application-defined URL scheme that an operating system associates with an application for URL-based activation.
- OAuthOAuth is an authorization framework that allows an application to obtain delegated access to protected resources without receiving the user's password.
- WebAuthenticatorWebAuthenticator is a .NET MAUI API that starts a browser-based authentication flow and returns the resulting authentication response to an application.
- bindable propertyBindableProperty is the .NET MAUI class that represents metadata and configuration for a bindable property.
- column definitionA column definition is a Grid specification that determines the sizing behavior of one column.
- row definitionA row definition is a Grid specification that determines the sizing behavior of one row.
- controlA control is a .NET MAUI view that displays content or receives user input.
- authentication serviceAn authentication service is an application component that performs user sign-in and obtains credentials or tokens for authenticated access.
- accessibilityAccessibility is the design of software interfaces so that people with disabilities can perceive, understand, navigate, and operate them.
- semantic propertiesSemantic properties are .NET MAUI UI metadata that communicates accessibility meaning, such as heading level, to assistive technologies.
- proportional layoutProportional sizing distributes available layout space among rows or columns according to proportional allocation factors.
- Visual Studio workloadA .NET workload is an installable component that adds a specialized development platform or toolchain to .NET.
- async/awaitasync/await is a C# language feature for composing asynchronous operations without blocking the calling thread while an operation is incomplete.
- SQLCipherSQLCipher is an SQLite-compatible database library that encrypts database contents and transparently decrypts them during access.
- SQLiteSQLite is an embedded, open-source relational database engine implemented as a self-contained library.
- SQLite-netSQLite-net is a .NET library that provides SQLite database access and object-relational mapping for application types.
- global using directiveA global using statement imports a namespace for every source file in a C# project.
- AppShellAppShell is the template application's .NET MAUI class that defines the app's Shell hierarchy and navigation structure.
- ShellContentShellContent is a .NET MAUI Shell element that associates a navigable Shell item with page content.
- authorization codeAn authorization code is a short-lived credential returned after user authorization that a client exchanges for access and related tokens.
- Duende IdentityServerIdentityServer is an OpenID Connect-compliant framework for implementing authentication and identity services in ASP.NET Core applications.
- IdentityModel.OidcClientIdentityModel.OidcClient is a .NET client library for authenticating clients with OpenID Connect identity providers and processing authentication responses.
- JSON Web TokenA JSON Web Token is a compact, signed token format for representing claims exchanged between parties.
- openid connectOpenID Connect is an identity layer built on OAuth 2.0 that enables clients to verify user identity and obtain identity claims.
- redirect uriA redirect URI is the callback address to which an authorization server sends a client after authentication, typically with an authorization code.
- light themeLight mode is an interface appearance mode that uses a predominantly light color scheme.
- PlatformViewPlatformView is a handler property that exposes the native platform control associated with a .NET MAUI view.
- explicit styleAn explicit style is a .NET MAUI style identified by a key and applied selectively to elements.
- implicit styleAn implicit style is a .NET MAUI style without an explicit key that applies automatically to matching control instances.
- ContentPageContentPage is a .NET MAUI page type that hosts a single content view for a full-screen application page.
- distribution certificateA distribution certificate is a cryptographic certificate used to identify and authorize software distributed for an Apple platform.
- self-hosted runnerA self-hosted runner is a machine managed by the workflow owner that executes automation jobs connected to a repository or organization.
- BindableLayoutBindableLayout is a .NET MAUI layout facility that generates child views from a bound collection.
- geolocation apiA geolocation API is a programming interface that obtains a device's or user's geographic location.
- sharing APIA sharing API is a programming interface that invokes an operating system's mechanism for sharing content or data with other applications or services.
- permissionA permission is an authorization that an operating system requires an application to obtain before accessing a protected capability or resource.
- provisioning profileA distribution profile is a platform configuration artifact that associates an application with release-signing credentials and distribution capabilities.
- HorizontalStackLayoutHorizontalStackLayout is a .NET MAUI layout that arranges child views sequentially along a horizontal axis.
- native applicationA native application is an installable program built to run directly on a target platform rather than in a web browser.
- AppCompatEditTextAppCompatEditText is an Android text-input widget from AndroidX AppCompat.
- EntryHandlerEntryHandler is the .NET MAUI handler that maps Entry views to platform-specific native text-input controls.
- UITextViewUITextView is a UIKit control that displays and edits multiline text on Apple platforms.
- ColumnSpanColumnSpan is a .NET MAUI Grid property that specifies how many columns a child view spans.
- color stopA gradient stop is a brush element that associates a color with a fractional position along a gradient axis.
- cross-platform codebaseA cross-platform codebase is a shared source-code base that can be built or deployed for multiple target platforms.
- native user interfaceA native user interface is a platform-specific interface whose controls and visual behavior correspond to the conventions of the operating system.
- iOS build jobAn iOS build job is a workflow job that compiles, signs, and packages an application for iOS.
- buttonButton is a .NET MAUI control that presents an actionable user-interface element.
- .NET CLI.NET CLI is the command-line interface for creating, building, running, testing, and managing .NET projects.
- HTTP clientHttpClient is a .NET class that sends HTTP requests and receives HTTP responses from network resources.
- ICommandICommand is a .NET interface representing an executable action together with its availability state and execution operation.
- IBrowserIBrowser is the IdentityModel.OidcClient interface that abstracts launching an authentication browser interaction and returning its result.
- ItemTemplateItemTemplate is a CollectionView property that specifies the DataTemplate used for each displayed item.
- model-view-updateMVU is a unidirectional UI architecture in which an immutable model is replaced by updates and the view renders the resulting state.
- attached propertyAn attached property is a XAML property mechanism that lets one object provide position or configuration metadata for another object.
- authenticationAuthentication is the process of verifying the identity of a user, application, or service before allowing access.
- Android App BundleAndroid App Bundle is Google's publishing format containing an Android application's compiled code and resources for distribution through Google Play.
- Android signingAndroid signing is the process of applying a cryptographic signature to an Android application package for release and distribution.
- dotnet publishdotnet publish is a .NET CLI command that compiles, packages, and prepares a .NET application for deployment.
- upload-artifact actionupload-artifact is a GitHub-maintained action that stores files produced by a workflow job as downloadable artifacts.
- workflow jobA workflow job is a group of GitHub Actions steps executed together on a specified runner.
- device idiomA device idiom is a category of device defined by its form factor and typical interaction conventions, such as phone, tablet, desktop, TV, or watch.
- HeightRequestHeightRequest is a .NET MAUI visual-element property specifying a preferred height subject to layout constraints.
- iconAn app icon is a visual identifier for an application shown by an operating system, application store, or other application interface.
- ObservableCollectionObservableCollection is a .NET collection type that notifies observers when items are added, removed, or changed.
- clicked propertyThe Clicked event is a .NET MAUI event raised when a menu item is activated by a user click.
- ApplicationApplication is the .NET MAUI base class representing the root application object and its application-level state.
- entry pointAn entry point is the method or platform-specific component at which an application begins execution.
- CreateMauiAppCreateMauiApp is the static startup method in a .NET MAUI template that constructs and returns the MauiApp instance.
- HostBuilderA host builder is a .NET hosting configuration object that constructs and configures an application host.
- IApplicationIApplication is the .NET MAUI interface implemented by an application root object.
- MauiAppMauiApp is the .NET MAUI application object produced by application startup configuration.
- UseMauiAppUseMauiApp is a .NET MAUI host-builder extension method that registers an application type for the host.
- visual stateA visual state is a named condition of a .NET MAUI visual element associated with property values that describe its appearance.
- visual state managerVisualStateManager is a .NET MAUI mechanism for organizing and applying property changes associated with visual states.
- App Store ConnectApp Store Connect is Apple's web-based platform for managing, testing, and distributing applications through its software stores.
- App Store Connect API credentialAn App Store Connect API credential is a set of Apple-issued values that authenticates programmatic access to App Store Connect.
- GitHub actionA GitHub Action is a reusable automation component that performs a step in a GitHub Actions workflow.
- upload-google-playupload-google-play is a community GitHub Action that uploads Android application artifacts to Google Play.
- upload-testflight-buildupload-testflight-build is a community GitHub Action that uploads an iOS application archive to App Store Connect for TestFlight distribution.
- service accountA service account is a non-human identity used by software to authenticate to cloud or application services.
- borderBorder is a .NET MAUI view that draws a border around a single child view and can provide a visual container for content.
- code reloadingHot reload on file save is an automatic hot-reload mode that applies supported changes when a source file is saved.
- handlerA handler is a .NET MAUI component that connects a cross-platform control representation to its platform-specific native control and applies property mappings.
- change handlerA change handler is a callback method invoked when a property value changes so that dependent state can be updated.
- DelegatingHandlerA delegating handler is an HTTP message handler that can inspect or modify a request or response before passing it to another handler.
- single responsibility principleThe single-responsibility principle is a software design principle stating that a component should have one primary reason to change.
- triggerA workflow trigger is a condition or event specification that determines when an automation workflow starts.
- YAMLYAML is a human-readable data serialization format that represents structured data through indentation, whitespace, and key-value syntax.
- Common Language RuntimeThe Common Language Runtime is the .NET execution environment that manages and runs compiled managed code.
- OnIdiomOnIdiom is a XAML markup extension that supplies property values conditionally according to the device idiom.
- behaviorBehavior is the part of user-interface logic that specifies what interface elements do in response to conditions or interaction.
- mockingA mock implementation is a test or development substitute that provides a controlled implementation of an interface or dependency.
- modal pageA modal page is an application page presented above the current page that requires dismissal before normal navigation continues.
- visual state groupA visual state group is a named collection of mutually exclusive visual states for a .NET MAUI element.
- API keyAn API key is a credential that identifies or authorizes a client when it accesses a service API.
- AbsoluteLayoutAbsoluteLayout is a .NET MAUI layout that positions and sizes child views using explicit or proportional bounds within its available area.
- menuA menu is a user-interface component that presents a list of commands or destinations for selection.
- UI logicUI logic is the presentation-layer logic that defines how application information is displayed and how interface elements behave.
- BaseViewModelA base viewmodel is a reusable superclass that provides shared state, behavior, and notification functionality to page-specific viewmodels.
- GoToAsyncGoToAsync is a .NET MAUI Shell navigation method that asynchronously navigates to a route and can carry parameters.
- binding source propertyA binding source property is the property whose value is propagated by a data binding to its target property.
- OnAppearingOnAppearing is a .NET MAUI page lifecycle method invoked when a page becomes visible.
- rowA row is a horizontal subdivision of a .NET MAUI Grid used to position child views.
- EventToCommandBehaviorEventToCommandBehavior is a .NET MAUI behavior that invokes a command when a specified UI event occurs and can pass event-derived parameters.
- data transfer objectA data transfer object is a data structure that carries serialized data between application or service boundaries without encapsulating business behavior.
- BlazorBlazor is a .NET web UI framework for building interactive web user interfaces with .NET and Razor components.
- cross-platform UI applicationCross-platform UI development is the practice of creating user interfaces that run across multiple operating systems from a shared codebase.
- popupA popup is a .NET MAUI Community Toolkit user-interface element that displays transient content above the current page.
- selected stateThe selected state is the visual state of a selectable .NET MAUI item that is currently selected.
- transient lifetimeA transient scope is a dependency-injection lifetime in which a new service instance is created each time the service is requested.
- write once, run anywhereWrite once, run anywhere is a software development approach in which one application is intended to run across multiple platforms without platform-specific modification.
- absolute sizingAbsolute sizing assigns rows or columns fixed dimensions expressed in device-independent units.
- columnA column is a vertical subdivision of a .NET MAUI Grid used to position child views.
- menu bar items collectionMenuBarItems is a .NET MAUI application property containing MenuBarItem objects that define a desktop menu.
- multiwindowingA multiwindow interface is an application interface that supports multiple independently managed windows.
- handler mappingA handler mapping is a customization definition that associates a view property or other key with logic for modifying its platform-specific handler.
- handlerAn event handler is a method that executes in response to an event raised by a software component.
- business logicBusiness logic is software logic that represents an application's business rules, processes, and decisions.
- viewmodel-first approachA viewmodel-first approach is an application-building technique that establishes functional viewmodel behavior before constructing the corresponding view.
- triggerAn event trigger is a .NET MAUI trigger that responds to an event raised by a control and does not automatically revert its applied change.
- reuseCode reuse is the practice of using existing software logic or source code across multiple applications, components, or target platforms.
- IHttpClientFactoryIHttpClientFactory is a .NET dependency-injection service for creating configured HttpClient instances and managing their underlying handlers.
- navigation stateNavigation state is the data associated with the current or requested navigation destination and its transition.
- ContentViewContentView is a .NET MAUI view that displays a single content object and can provide the visual basis for a templated control.
- custom stepper controlA custom stepper control is a user-defined interface control that displays a numeric value and provides controls for increasing or decreasing it.
- application identifierA bundle identifier is a case-sensitive reverse-DNS identifier that uniquely identifies an application package on a target platform.
- device-independent unitA device-independent unit is a display-size unit adjusted for screen density to provide approximately consistent physical sizing across displays.
- WeakReferenceMessengerWeakReferenceMessenger is a .NET Community Toolkit messaging component that delivers messages to recipients through weak references.
- SearchBarSearchBar is a .NET MAUI control that accepts search text and can expose a command for initiating a search.
- StepperStepper is a .NET MAUI control that lets a user adjust a numeric value using increment and decrement controls.
- validationValidation is the process of checking user-provided data against validity rules and informing the user when the data is invalid.
- desktop application layoutA desktop application layout is an interface arrangement optimized for large screens, pointer input, and desktop interaction conventions.
- MenuFlyoutItemMenuFlyoutItem is a .NET MAUI menu item that displays text and exposes actions through events or commands.
- OpenWindowOpenWindow is a .NET MAUI application method that displays a supplied window instance.
- SceneA Scene is an iOS or Mac Catalyst running instance of an application that manages its windows and user interface.
- SceneDelegateSceneDelegate is an iOS and Mac Catalyst delegate object that coordinates the lifecycle and configuration of an application scene.
- windowA window is a .NET MAUI top-level display container that hosts a page and can be opened as an application window.
- hierarchical navigationHierarchical navigation is a navigation pattern in which pages are organized in parent-child levels and users move through that hierarchy.
- .NET.NET 7 is a major release of Microsoft's .NET software development platform and runtime.
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