Resizer: variable font files: unable to load valid file names

[softlion]

Describe the bug

When you download font from https://fonts.google.com/specimen/Open+Sans
you have the choice to use a "variable" font file.

"variable" font files contains alternative axes. Foe ex:
wdth
wght
This is more practical than to use many static font files to get BOLD, MEDIUM etc ...

Both android 12+ and iOS 11+ support variable font files.

Example of a valid file name:
OpenSans-Italic-VariableFont_wdth,wght.ttf

When you add that file to the Fonts folder, resizer crashes.

1>Microsoft.Maui.Resizetizer.After.targets(568,17): Error MSB4186 : Invalid static method invocation syntax: "[System.IO.Path]::GetFileName(obj\Debug\net10.0-android\android-x64\resizetizer\f\OpenSans-VariableFont_wdth,wght.ttf)". Method 'System.IO.Path.GetFileName' not found. Static method invocation should be of the form: $([FullTypeName]::Method()), e.g. $([System.IO.Path]::Combine(`a`, `b`)). Check that all parameters are defined, are of the correct type, and are specified in the right order.

When you rename the file, resizer continues to crash. Until your clean and rebuild.

Regression

No response

Steps to reproduce

You can download the font "OpenSans" on google font.
Both android 12+ and iOS 11+ support variable font files.

        var builder = MauiApp.CreateBuilder();
        builder
            .UseMauiApp<App>()
            .UseMauiCommunityToolkit()
            .ConfigureFonts(fonts =>
            {
                fonts.AddFont("OpenSans-VariableFont_wdth,wght.ttf", "OpenSans");
            });
``



### Expected behavior

don't crash :)

### Screenshots

_No response_

### IDE and version

Rider

### IDE version

2025.3.0.1

### Nuget packages

- [ ] CommunityToolkit.Common
- [ ] CommunityToolkit.Diagnostics
- [ ] CommunityToolkit.HighPerformance
- [ ] CommunityToolkit.Mvvm (aka MVVM Toolkit)

### Nuget package version(s)

10.0.10

### Additional context

- OS: Window 11
- Target: maui android 10
- VS 2026


### Help us help you

No, just wanted to report this