xamarin.forms Archives - Brian Lagunas

Prism for Xamarin.Forms – Confirming or Preventing Navigation

January 30, 2019Posted by Brian Lagunasin Prism, Video, Xamarin

A View or ViewModel can determine whether or not it can perform a navigation operation. When a ViewModel implements the IConfirmNavigation or the IConfirmNavigationAsync interface, the navigation process looks to see what the result of this method is. If true, a navigation process can be…

Prism for Xamarin.Forms – Passing Navigation Parameters

January 29, 2019Posted by Brian Lagunasin Prism, Video, Xamarin

When navigating throughout your Prism for Xamarin.Forms applications, it is often required to pass parameters from one View to another. Prism allows you to pass navigation parameters with three simple steps: 1. Create the navigation parameters 2. Get the navigation parameters 3. Read the navigation…

Prism for Xamarin.Forms – Navigation Basics

January 25, 2019Posted by Brian Lagunasin Prism, Video, Xamarin

Navigating in a Prism application is conceptually different than standard navigation in Xamarin.Forms. While Xamarin.Forms navigation relies on a Page class instance to navigate, Prism removes all dependencies on Page types to achieve loosely coupled navigation from within a ViewModel. In Prism, the concept of…

Prism – Using CompositeCommands

December 26, 2018Posted by Brian Lagunasin Prism, UWP, Video, WPF, Xamarin

In this video I show you how to implement the popular “Save All” functionality using Prism’s CompositeCommands.

Prism – Using DelegateCommands

December 19, 2018Posted by Brian Lagunasin Prism, UWP, Video, WPF, Xamarin

In this video, I show you how to use the unique features of Prism’s DelegateCommand to respond to user interaction from within a ViewModel.

Prism for Xamarin.Forms – Create your first application

December 14, 2018Posted by Brian Lagunasin Video, Xamarin

This videos show you how to create your very first Xamarin.Forms application using Prism for Xamarin.Forms with the help of the Prism Template Pack. Be sure to visit our sponsor Infragistics using the link below so that I can continue to make more video content.…

What’s New in Prism for Xamarin.Forms 7.0

January 12, 2018Posted by Brian Lagunasin Prism, Xamarin

Go grab some snacks and drinks, because this is going to be a long one. It’s been 10 months since the last stable release of Prism 6.3, and there have been a ton of changes since. We have been getting tons of great feedback, fixing…

Xamarin University Guest Lecture – Prism + Xamarin.Forms Navigation

January 10, 2018Posted by Brian Lagunasin Prism, Video, Xamarin

One of the most complicated aspects of writing an MVVM based Xamarin.Forms application is navigation. Not only is navigation specific to a Page instance, but each Page can have its own modal and non-modal navigation stacks. On top of that, the INavigation interface has a…

The Xamarin Show | Episode 10: Prism for Xamarin.Forms with Brian Lagunas

January 4, 2018Posted by Brian Lagunasin Prism, Video, Xamarin

This week, James is joined by friend of the show Brian Lagunas, XAML Product Manager for Infragistics, who introduces us to Prism for Xamarin.Forms. Brian walks us through exactly what Prism is and how developers can get started and leverage Prism in their Xamarin.Forms applications.…

Mocking and Unit Testing the Xamarin.Forms Application class

July 10, 2017Posted by Brian Lagunasin Xamarin

I have been working on Prism for Xamarin.Forms for a long time now, and one thing kept causing me nothing but headaches… testing anything that involves the Xamarin.Forms Application class. I had a work-around in place for awhile now, but it started causing me issues…