How do I inherit a custom control written in C# inside of xaml

Question

I have a problem where a WPF slider is not functioning properly inside a scrollviewer. I believe this problem has been adressed here:

The accepted answer is telling to retemplate the slider based on the custom thumb (created in ac# class).

Unfortunately whatever I do, I get problems.

to make things more difficult my slider is based on Mahapps and I found the slider style online:

So, I copied the entire Slider style into my App.Xaml. So far things work...

But When I try to modify the Thumb style by doing a "BasedOn":

<Style x:Key="HorizontalSliderThumb" TargetType="Thumb" BasedOn="{StaticResource CustomThumb}">

Nothing works....

I don't know what I'm doing wrong.

Help is appreciated !

Thank you,

Answer 1

Just add this to your xaml file

xmlns:custom="clr-namespace:<Namespace of custom controls>">

From there you can use

<custom:<name of custom component> />