2.1 KiB
App.xaml
Root Tag
The <Application> tag begins with two XML namespace declarations, both of which are URIs.
The default namespace belongs to Xamarin. This is the XML namespace (xmlns) for elements in the file with no prefix, such as the ContentPage tag.
The URI includes the year that this namespace came into being and the word forms as an abbreviation for Xamarin.Forms.
The second namespace is associated with a prefix of x by convention, and it belongs to Microsoft. This namespace refers to elements and attributes that are intrinsic to XAML and are found in every XAML implementation.
The word winfx refers to a name once used for the .NET Framework 3.0, which introduced WPF and XAML.
The x:Class attribute can appear only on the root element of a XAML file. It specifies the .NET namespace and name of a derived class. The base class of this derived class is the root element.
In other words, this x:Class specification indicates that the App class in the AppName namespace derives from Application.
That's exactly the same information as the App class definition in the App.xaml.cs file.
<?xml version="1.0" encoding="utf-8" ?>
<Application xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="AppName.App">
</Application>
Shared Resources
<?xml version="1.0" encoding="utf-8" ?>
<Application xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="AppName.App">
<!-- collection of shared resources definitions -->
<Application.Resources>
<!-- Application resource dictionary -->
<ResourceDictionary>
<!-- Key-Value Pair -->
<Type x:Key="DictKey">value<Type>
</ResourceDictionary>
<!-- define a reusable style -->
<Style x:Key="Style Name" TargetType="Element Type">
<!-- set properties of the style -->
<Setter Property="PropertyName" Value="PropertyValue">
</Style>
</Application.Resources>
</Application>