MaterialDesignThemes.CustomResources

A mitigation for a WPF memory leak

WPF (.net core and full .net) has a memory leak regarding using a font source with FontFamily. This is discussed in issue #746 from Material Design in Xaml Toolkit

This solution/mitigation is based on Dominic Jonas idea and adapted to be used/integrated by Material Design in Xaml Tookit.

To verify the issue open the full .net Demo and change the MainPage, Page1 and Page2 to use default font family sintax:

FontFamily="{DynamicResource MaterialDesignFont}"

Follow steps:

1. Run it;
2. Take a snapshot from Visual Studio Diagnostics Tool.
3. Look form Unmanaged Resources. You find 101.
4. Open Page 1;
5. Take a snapshot from Visual Studio Diagnostics Tool.
6. Look form Unmanaged Resources. You find 106.
7. Open Page 2;
8. Take a snapshot from Visual Studio Diagnostics Tool.
9. Look form Unmanaged Resources. You find 110.
10. Open Page 1 again;
11. Take a snapshot from Visual Studio Diagnostics Tool.
12. Look form Unmanaged Resources. You find 113.

Apply the fix in the MainPage, Page1 and Page2:

FontFamily="{customResources:FontResource FontName=Roboto}"

And redo the steps. You won't see the same problem.

Available as nuget package

MaterialDesignThemes.CustomResources