Slider AutoToolTipPlacement permanently as display

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C#

WPF

I want to use the WPF Slider for displaying a thermometer. I tried Slider AutoToolPlacement NOT ToolTip. AutoToolPlacement shows the actual value of the Slider nearby the thumb. That would be fine for me. But value is shown only when Slider is clicked. I search for a possibility, to set Slider's value in programm AND show Slider's value in the Slider's thumb permanently, not only when Slider thumb is clicked. Do you have any idea, or should i use another WPF object?

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<slider x:name="slider" orientation="Vertical" dockpanel.dock="Right" xmlns:x="#unknown">
AutoToolTipPlacement="TopLeft"
IsSnapToTickEnabled="True" >

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