Programming Articles

Through this article series, you've created several .NET MAUI pages, performed navigation, used data binding, and worked with the MVVM and DI design patterns. As you created your view models, you've set information and exception message properties. In this article, you'll build reusable components to display information, error, and validation messages on your pages. To validate user input, you're going to use data annotation attributes such as [Required] and [Range]. With just a little generic code, you can add validation to your .NET MAUI applications and display the error messages from these data annotation attributes. Sometimes you require a pop-up dialog to ask the user a question, get a little piece of data, or maybe just provide some information to the user. There are a few different dialogs you can use in .NET MAUI and you'll start this article by exploring these.

In this article series, you've created several .NET MAUI pages, created a top-level menu system, and programmatically navigated between pages. Using data binding greatly reduces the amount of code you need to write. Using the MVVM and DI design patterns helps you create applications that are reusable, maintainable, and testable. In this article, you'll display lists of data and navigate from a list item to the detail page for that item. .NET MAUI provides ListView, CollectionView, and CarouselView controls for displaying lists. Each list control is illustrated, and you're provided with guidance on what each control is best at displaying.

Up to this point in this article series on .NET MAUI, you created a set of typical business application input pages and learned about the many different controls you can use for data input. Data binding is a great feature of .NET MAUI to help you eliminate C# code in your applications. In this article, you'll learn the Model-View-View-Model (MVVM) and Dependency Injection (DI) design patterns to create reusable, maintainable, and testable applications. You'll learn to eliminate code in your code-behind by taking advantage of Commanding. You'll also learn how to apply Commanding while keeping your various components reusable across other types of applications. Finally, you'll learn how to keep your MauiProgram class maintainable by employing extension methods.

In this article, you'll continue to use more data entry controls and learn to perform data binding between controls. You're going to create a class with properties that you can bind to controls on a page as well. When you change the values of properties in a class, you need to raise a PropertyChanged event so the UI can update those controls that are bound to the properties. You're going to create a base class that helps you raise that event any time the property values change.

In this article, you'll learn to apply styles so all pages in your application look consistent. You'll create several pages and learn how to use the built-in navigation to move from one page to another. Using a ContentView control, you'll create a header with data bindings that you can reuse on all pages in your application. Finally, you'll add a border and a scroll viewer around all your controls.

Unlock the true potential of cross-platform development with eXtensible Application Markup Language (XAML) and .NET MAUI (Multi-platform App UI). Say goodbye to the frustration of writing code for each platform separately. With .NET MAUI, you can develop powerful business applications that run seamlessly on Windows, Android, Mac, and iPhone devices. In this series of articles, I'll guide you through the process of building a complete business application from scratch, step by step.