Migrating to Preview 13

Remove "Assets" from Windows image paths

• Improve consistency with resizetizer

Update paths in "Platform/Windows/Package.appxmanifest" to remove "Assets" from file paths.

If you have anywhere stated the location of images for Windows, you'll want to remove that. For example:

<Application xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:windows="clr-namespace:Microsoft.Maui.Controls.PlatformConfiguration.WindowsSpecific;assembly=Microsoft.Maui.Controls"
             windows:Application.ImageDirectory="Assets"
             x:Class="WeatherTwentyOne.App">

should now be

<Application xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="WeatherTwentyOne.App">

Control Changes

• GridLayout name has been removed in favor of the original Grid naming to remedy confusion

Raw Assets

This is new addition to the templates, but you will fine a new folder under Resources named Raw, with a file named AboutAssets.txt. This file type is set to MauiAsset as the Build Action. Inside of it you will find:

Any raw assets you want to be deployed with your application can be placed in
this directory (and child directories) and given a Build Action of "MauiAsset":

	<MauiAsset Include="AboutAssets.txt" />

These files will be deployed with you package and will be accessible using Essentials:

	async Task LoadMauiAsset()
	{
		using var stream = await FileSystem.OpenAppPackageFileAsync("AboutAssets.txt");
		using var reader = new StreamReader(stream);

		var contents = reader.ReadToEnd();
	}

Inside of your .csproj you can include all Raw assets by adding the following property under the MauiFont configuration:

    <MauiAsset Include="Resources\Raw\**" LogicalName="%(RecursiveDir)%(Filename)%(Extension)" />

.NET MAUI Essentials

.NET MAUI Essentials is now automatically configured when you initiatlize .NET MAUI in your MauiProgram.cs. You can remove the following boilerplate code from the the individual platforms:

Android

In the MainActivity.cs you can remove all code inside of the class so it looks like:

[Activity(Theme = "@style/Maui.SplashTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize)]
public class MainActivity : MauiAppCompatActivity
{
}

Windows

In your App.xaml.cs inside of the Windows folder you can remove OnLaunched and it should now look like:

public partial class App : MauiWinUIApplication
{
    /// <summary>
    /// Initializes the singleton application object.  This is the first line of authored code
    /// executed, and as such is the logical equivalent of main() or WinMain().
    /// </summary>
    public App()
    {
        this.InitializeComponent();
    }

    protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
}