Software development

XAML Quick Guide

If a program opens XAML files on your computer by default, but you really want a different one doing it, see our How to Change File Associations in Windows guide for help. However, since they’re text-based XML files, you can also open one and edit one with Windows Notepad or any other text editor. This also means that any XML editor can open a XAML file, too, Liquid XML Studio being one example.

XAML is an XML-based language, so .XAML files are basically just text files. WPF allows for the definition of both 2D and 3D objects, rotations, animations, and a variety of other effects and features. A XAML file can be compiled into a Binary Application Markup Language file, which may be inserted as a resource into a .NET Framework assembly. At run-time, the framework engine extracts the BAML file from assembly resources, parses it, and creates a corresponding WPF visual tree or workflow. In XAML applications, markup extensions are a method/technique to gain a value that is neither a specific XAML object nor a primitive type.

what is xaml

Modern Xamarin.Forms development provides rich tooling for XAML development – like Forms Previewer, Inspector and Profiler. A type can be a control, a class or other objects defined in the framework library. UI debugging tools for XAML are introduced with Visual Studio 2015 to inspect the XAML code at runtime. With the help of these tools, XAML code is presented in the form of visual tree of your running WPF application and also the different UI element properties in the tree. So clearly, XAML as the UI layer is much loved and has stood the test of time.

UI Debugging Tools for XAML

Convert XAML to HTML manually by replacing the XML elements with the correct HTML equivalents. Stack Overflow has a little more information on doing that, which might be helpful. XAML files are used in .NET programming, so they can also be opened with Microsoft’s Visual Studio.

what is xaml

When you compile and execute either the XAML code or the C# code, you will see the same output as shown below. Why developer experience is the key to better software, straight from the… If you had another definition like the first column would take up 70% of space and the second one would take up 30%. The XAML file is interpreted by a platform-specific XAML processor. While the modern web may have moved away from Plugins model, many enterprise Silverlight apps still power line of business workflows.

x: meaning in xaml

Lifewire EV EVs have been around a long time but are quickly gaining speed in the automotive industry. Learn how the long-coming and inevitable shift to electric impacts you. XAML originally stood for Extensible Avalon Markup Language, Avalon being the Software development articles for dummies code-name for Windows Presentation Foundation . Before the end .NET Framework 3.0 development, however, Microsoft adopted XAML for Workflow Foundation . On this Wikipedia the language links are at the top of the page across from the article title.

The following XAML code creates a TextBox, a ContextMenu, and MenuItems with some properties and events such as Checked, Unchecked, and Click. 5GridPanelA Grid panel provides a flexible area which consists of rows and columns. In a Grid, child elements can be arranged in a tabular form. Layering of overlapping child elements on top of each other.

Making statements based on opinion; back them up with references or personal experience. If the total width of the grid is 300 you get column widths 50, 100 and 150. If the total width of the grid is 600 you get column widths 100, 200 and 300. The star width is best used when the width of the grid isn’t fixed. When the grid is resized the columns will then scale proportionally as specified by the star widths.

The following code snippet represents a Button object element. The purpose of XAML is simple, to create user interfaces using a markup language that looks like XML. Most of the time, you will be using a designer to create your XAML but you’re free to directly manipulate XAML by hand.

what is xaml

3DockPanelDockPanel defines an area to arrange child elements relative to each other, either horizontally or vertically. With DockPanel, you can easily dock child elements to top, bottom, right, left, and center with Dock property. 2WrapPanelIn WrapPanel, child elements are positioned in a sequential order from left to right or from top to bottom based on the orientation property.

XAML – Markup Extensions

A GUI framework allows you to create an application with a wide range of GUI elements, like labels, textboxes and other well known elements. Without a GUI framework you would have to draw these elements manually and handle all of the user interaction scenarios like text and mouse input. This is a LOT of work, so instead, most developers will use a GUI framework which will do all the basic work and allow the developers to focus on making great applications. Data binding is a mechanism in XAML applications that provides a simple and easy way for Windows Runtime Apps using partial classes to display and interact with data. The management of data is entirely separated from the way the data is displayed in this mechanism.

Yup, that’s almost XAML, and .NET developers with any XAML experience will be perfectly at home here. XAML is used extensively in Windows Presentation Foundation , Silverlight, Workflow Foundation , Windows UI Library and Universal Windows Platform . In WPF and UWP, XAML is a user interface markup language to define UI elements, data binding, and events.

XAML uses a specific way to define look and feel called Templates; differing from Cascading Style Sheet syntax, it is closer to XBL. WPF, which stands for Windows Presentation Foundation, is Microsoft’s latest approach to a GUI framework, used with the .NET framework. Given below is the custom control click event implementation in C# which updates the text of the text block.

Enter WebAssembly – a low level instruction format that modern evergreen browsers can execute natively, just like JavaScript engines execute JS code. Being an open web standard, WebAssembly is enjoying support from big browser vendors, with promises of security and native execution speeds. XAML started life as a simple thin UI markup layer, but has had a surprisingly eventful history. Developers on Microsoft’s technology stack have been witnesses to XAML’s phenomenal rise as well as its teetering on the edge of life support.

  • Developers on Microsoft’s technology stack have been witnesses to XAML’s phenomenal rise as well as its teetering on the edge of life support.
  • Let us now try to understand where we can find this type of mistake when the desired output is not shown.
  • In previous GUI frameworks, like WinForms, a GUI was created in the same language that you would use for interacting with the GUI, e.g.
  • When you compile and execute the above code, it will produce the following output.
  • Both Microsoft and the developer community stepped up to make XAML/C# development a wonderful experience for developers.

Apple has been having an app gap problem – most developers build for iOS, but not much for the Mac AppStore. Their remedy is an internal project codenamed ‘Marzipan’ – aimed for fruition some time in 2019. The goal is get iOS apps running on the Mac desktop through a mashup of UIKit and AppleKit – and there are several demos Apple has shown off already. Now this obviously has to be done carefully – there are implications when we take touch apps back to the desktop with mouse/keyboard. A big part of why .NET developers are fond of XAML development is the rich tooling and ease of maintaining large codebases. Model-View-ViewModel is a design pattern that works really well for XAML/C# development and there is plenty of help on this front.

Example of Object with Child Element: StackPanel contains Textblock as child element

In this example, we don’t have any standard data source, but the UI elements are bound to other UI elements. In two-way binding, the user can modify the data through the user interface and have that data updated in the source. If the source changes while the user is looking at the view, you would want to update the view. Whenever this button is clicked, it will fire an OnClick event and you can add any type of behavior as a response to the Click. Let’s have a look at the OnClick event implementation which will show a message when this button is clicked. 8DialogsAn application may also display additional windows to the user to gather or display important information.

The engineering efforts behind each UI component shows in performance and pixel-perfect rendering – developers love complex UI that they can just drop in to light up apps. Popular controls include Grids, ListViews, various Charts/Graphs, Calendars, SideDrawers and myriads of other UI that is difficult to create by hand. NativeScript is an open source framework for building JS Native mobile apps. Developers get to write straight up JavaScript or TypeScript with Angular for the app’s business logic. And the abstracted UI layer is defined in XML – a JS bridge renders corresponding native UI at runtime. While officially XML, let’s take a look at standard UI definitions in NativeScript – look familiar?

This is exactly what’s powering Blazor – the experimental ASP.NET web framework promising to bring C# to the browser with Razor syntax. This should lead to excellent performance of C# code on the browser. Mono has been around since the early days of the .NET Framework, as a popular port of .NET APIs to platforms outside of Windows. Mono continues to power all of Xamarin – it is clearly the easiest way to take .NET code and run it on iOS/Android.

Starting from Windows 8 and after several iterations, Microsoft finally landed on UWP – the de facto way of building forward-looking apps for Windows. And sure enough, the UI layer is powered by XAML, albeit a slightly different dialect than WPF uses. XAML powering UWP apps is a big deal for developers comfortable with the markup language – primarily because of UWP’s reach.

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