NotifyPropertyChange on Nativescript

If you like me are developing apps with nativescript core with typescript, probably know the PropertyChange event behind the MVVM (Yes, I love NativeScript core with TS because reminds me to my love for WPF/UWP development on Windows).

How on Windows, your class must implement the INotifyPropertyChange interface, in Nativescript specific case you just need to extends the Observable class.

Here how you can notify that a property is changed (we are assuming that we have a ViewModel with the property “Clicked” ad “ClickedTitle” in it.

public Clicked: number = 0;
public ClickedTitle: string = "";
// note that this is an attribute, not a property
public UpdateUI()
{
   this.Clicked = this.Clicked++;
   this.ClickedTitle = "You have clicked " + this.Clicked + " times";
   this.notifyPropertyChange("Clicked", this.Clicked);
   this.notifyPropertyChange("ClickedTitle", this.ClickedTitle);
}
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Vue js with aspnet core

What is this?

Honestly, I’m a software engineer, a backend man… however, someone that can’t do frontends, grahpics, etc.

I’ve always been fashinating by the UI world but my skills and my patience in the new javascript-wtf-hell-packages-environment aren’t the best.

I love .net core, working with asp net core for websites and web api, but for UI until now I always used the classic approach: Razor pages + jquery.

One day I’ve met Vue.js. How you can imagine for a MVVM lover like me, with Vue has been love at first seen.

So I’ve tried to integrate it with aspnet core via Microsoft SPA Templates but Vue was no present in it. My first approach was to check the code on github JavscriptServices and create a VueDeveloperServer like for react, but after I’ve choose to use another approach to this scenario.

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Localize your Xamarin Forms App with shared project.

When I’ve started with Xamarin.Forms, my first problem was about app’s localization. All tutorials and also Xamarin documentation that I found regard only about PCL’s projects (that now are deprecated in favor of .net standard).

However, my scenario was better with shared project so I started the project in this way, saying to myself: “It’s time to face off the problem”.

I’ve thinked about a solution about app’s localization and I’ve developed the DewXamarinLocalization library, a .net standard library for xamarin forms.

So, let’s see how we can localize a Xamarin.Form shared project.

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Change layout for authenticated users in asp net core

When we talk about MVC on asp net, we know that the views are (in default approach) parts of our web page, because we have defined a layout that contains them. But sometimes we need/want to use a different layout, one of these scenario is for example when we have a different layout for logged/not logged users.

Let’s see an example, which use the simple AuthenticationCookie from NuGet package Microsoft.AspNetCore.Authentication.Cookies.

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