Posts

Posted on

Faster than Reflection: Delegates. Part 1.

This article is first part of the series of three. Next ones you can find here and here.

Code for all three articles, with new features and bug fixes is available on GitHub and as Nuget package.

Why not Reflection?

If you working with .NET and C# (probably other languages too), at some point, you will have to write more advanced and generic code, that i.e. reads all properties of a type, searches for attributes, etc. Or maybe you want to call some private method or property? It is not that rare to use some internal mechanism of framework or library. Usually, the first solution involves Reflection. But the thing is: Reflection is slow. Of course, it is sufficient if you need to use Reflection rarely and it is not the main code of the application. If it is used more often at some point, you will probably try to optimize it. And now is the fun part: how to do it? Continue reading “Faster than Reflection: Delegates. Part 1.”

Posted on

ViewFactory for Xamarin application

First things first – Why?

First of all I do not like how creating of views and navigation works in Xamarin.

There is much boilerplate needed to just navigate from one page to another.

Typically like in Xamarin documentation we have to obtain INavigation interface instance, create instance of a new page, create instance of view model and all dependencies it requires.

When you page do not require view model things are real easy and Xamarin sample is just enough. Continue reading “ViewFactory for Xamarin application”

Posted on

Xamarin Master-Detail Page

This article as previous ones (Frame With Padding, Frame Outline Problem, Inheritance from Implicit Styles) also will be about Xamarin.
This time we will inspect Master-Detail page control/mechanism. You can find official documentation for this control here.

Quick spoiler: I never used this in any production application. Why? I will explain. Whole article will be to explain why this is just not worth your time. In this and subsequent articles I will introduce much better solution. Continue reading “Xamarin Master-Detail Page”

Posted on

Xamarin Style based on implicit Style

Next article about bugs in Xamarin will touch topic of Styles. Styles for all of controls not only Frame (and if you wondering why Frame you should check first two articles about Xamarin here and here).
First of all if you are using Styles in Xamarin you probably know how to define implicit styles. If not here is a sample:

<Application.Resources>
  <ResourceDictionary>
    <Style TargetType="Label">
      <Setter Property="FontSize" Value="45" />
    </Style>
  </ResourceDictionary>
</Application.Resources>

Continue reading “Xamarin Style based on implicit Style”

Posted on

Xamarin Frame and disappearing Outline

This is another article in mini series of Xamarin bugs and workarounds for them 🙂 Previous one you can find here.

This one is again about Frame control. I promise that another one will be about something else B)

Issue can be observed when you bind BackgroundColor property of Frame control and something will trigger change of view model source property binded to background color. Continue reading “Xamarin Frame and disappearing Outline”