MVVM with F# (Tutorial)

Intro I have reason to believe that F# will be the language of choice in several years for the .NET platform. This language was designed to assist error-prone developers such as myself from making mistakes that stem from having to write too many lines of code for expressing how a moderate operation is to execute. …

Xamarin.Forms: Camera Integration

Intro In the last post, I wrote a tutorial on how to integrate Google Maps and GPS services into a Xamarin.Forms app. This post will focus on camera integration with Xamarin.Forms. In this post I will provide code (referenced from XF Labs) that will enable your Xamarin.Forms app to take and view photos. The following …

Xamarin.Forms: Integrating Maps and Location Services

Intro Within Xamarn.Forms, we may find ourselves having to implement a feature that's dependent on a map and/or GPS. In order to implement this for Android and provide other controls to manage related services, we must implement a native Android page within our Xamarin.Forms app. In this post I will demonstrate how to load a …

Bar Charts and Xamarin.Forms

Intro I recently experimented with bar charts for Xamarin.Forms. I tried to use Oxyplot, which is a popular open source tool for implementing graph charts. However, I ran into versioning issues between my Xamarin.Forms assemblies and Oxyplot. After an hour of frustration, I searched for an alternative approach. I soon found one. It was Syncfusion. …

MVVM and Visual Studio’s UserStory Extension

Intro I have improved my software development practice by building a Visual Studio extension. This extension has boosted my productivity by enabling me to rapidly generate user story modules to support my emergent design practice. Bizmonger Extensions One extension that I have built to support my development efforts is the UserStory project template. This project template …

From Windows to Xamarin.Forms

Intro I recently wrote an Android app using a framework called Xamarin.Forms. Xamarin.Forms is a cross-platform UI framework that enables developers to share code across all major mobile platforms (IOS, Android, and Windows Phone) that’s written in C# and XAML. After implementing this app, I would like to report my findings. Test Automation Writing an …

Does your View-model Violate Single Responsibility

Intro The majority of us are unknowingly violating the Single Responsibility Principle when constructing our view-models. The XAML below consists of three buttons that when pressed will show a description relative to each button. There is also a clear button to clear all description fields. XAML: Now Take the following view-model: This view-model handles state …