If you are a programmer, you may have heard of the SOLID principles. This acronym, among others like TDD, DI, etc. is unfortunately more and more used as buzzwords. It is not rare to hear a candidate quoting the definition of the SOLID principles in a technical interview: single responsibility, dependency inversion… However, the most interesting part may be how to effectively use them everyday.
I’m proud to annonce the release of Pillar, a lightweight MVVM framework for Xamarin.Forms 1.x and 2.x. With this framework, you won’t have to deal with page navigation or messed up code-behind anymore. Now, it’s all about view models, and navigation between view models. It rely on Autofac for dependency injection and MvvmLight for basic MVVM features and helper classes.
Features included in Pillar:
- ViewModel navigation, you won’t need to manipulate pages in your view models
- Design your apps with unit testing in mind with dependency injection
- Flexible, you can use differents patterns: ViewModel first, Messaging, ViewModelLocator
- EventToCommand behavior and useful converters included
- Useful views: ItemsView repeater, with optional DataTemplate selector by item type
- Not intrusive, you can reuse your view models in other projects (WPF for example) with very few modifications
You can install Pillar with the Nuget package manager:
You will find the documentation and samples on the GitHub repository. Continue reading “Pillar, a MVVM framework for Xamarin Forms”
Being able to run ASP.NET web applications or web sites on Linux operating systems now is very cool. Before that, we had to use Mono, but it does’t support the full .NET framework or .NET technologies such as MVC or async support. Now, we have the .NET Core 5.0 (dnxcore50), and we can run our cross-platform ASP.NET Core web apps with the same new web server, Kestrel. Kestrel is a web server based on libuv and works nicely. Therefore, there are a few things that discourage me using it in production as the main web server. I prefer to use a more popular web server, Nginx. I really like Nginx, it is the third most popular web server in the world, and it is often used as a reverse proxy, and this is exactly how I am going to use it with Kestrel. Continue reading “ASP.NET Core with Nginx as reverse proxy on Linux”
MuPDF is a small, fast and free PDF library written in portable C, available for Android. You can use this library for its built-in PDF viewer, for rendering PDF pages to images with a high-quality, manipulating PDF files in various ways…
If you want to use MuPDF in your Xamarin Android application, you can use this MuPDF Xamarin Android Binding nuget package that I made. Continue reading “MuPDF Xamarin Android binding on Nuget”
Designing a login form with Ionic Framework is very easy. I wrote this post for two reasons:
- First, I find vertically and horizontally centered login forms in mobile applications beautiful, especially with a nice background image or pattern.
- Secondly, I wanted a responsive login form that looks great on tablets. Many people use Ionic Framework to develop smartphone-only applications, but it is possible to make them look good on tablets with the Ionic responsive grid.