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 a c# 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,

score 1 · Accepted Answer · answered Jul 13 '18 at 14:43

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> />

answered Jul 13 '18 at 14:43

Andre Motta

The thumb control is part of the slider. I am trying to retemplate the slider based on the customcontrol. – user1841243 Jul 13 '18 at 14:47
after adding this custom try to use: – Andre Motta Jul 13 '18 at 14:49
1

Style x:Key="HorizontalSliderThumb" TargetType="CustomThumb" – Andre Motta Jul 13 '18 at 14:49
Then I get this message: 'CustomThumb' TargetType does not match type of element 'Thumb'. – user1841243 Jul 13 '18 at 14:53
The CustomThumb is the same as declared in the other link right? Weird, if no one answers this untill later i will get home and try this on my computer. Sorry for not being able to be more helpful at the time – Andre Motta Jul 13 '18 at 14:55
Never mind, It worked ! I also had to reference customthumb from inside the slider (instead of the normal thumb) and not only set the targettype for the horizontalSliderThumb. Thanks for the help – user1841243 Jul 13 '18 at 15:02
Glad i could be of help! – Andre Motta Jul 13 '18 at 15:04

1 Answers1