C# WPF preview in IDE is different than while debugging

Question

I have a Label in a Grid and inside defined the fontsize, however, I have a global style defined for all labels in a dictionary. In the preview in Blend it looks fine and the fontsize is 10 and fontweight is normal but when I debug the program the fontsize is 17 and fontweight is medium. Even if I try to change fontsize and fontweight while the application is running no chnage is visible. Why is that happening and how can i avoid it?

edit: Even is I remove the setters from the dictionary there is no change so it can't be the problem. Also i added a app.manifest with DPI Awareness set to true and nothing changed.

Label: <Label Content="0" FontWeight="Normal" FontSize="10"/>

Dictionary:

<Style x:Key="{x:Type Label}" TargetType="{x:Type Label}">
                   <Setter Property="Foreground" Value="#C7C7C7"/>
                   <Setter Property="FontSize" Value="17"/>
                   <Setter Property="FontWeight" Value="Medium"/>
              </Style>

Preview:

Debug:

looks like style override while you debug. you have a setter in your style saying `FontStyle ` to be 17 — Abin, Dec 16 '19 at 22:22
I know that I have this setter, but why is it suddenly happening? It worked many many times before and just for this label it won't work. — 29thDay, Dec 17 '19 at 05:42
And eventhough, why should it be displayed as I want in the preview but not while debugging? — 29thDay, Dec 17 '19 at 05:45
I read that on the newer .NET frameworks, there are some fixes regarding the DPI awareness. — Norbert Forgacs, Dec 17 '19 at 08:51

score 0 · Accepted Answer · answered Dec 23 '19 at 18:25

0

(I know, it's strange to answer your own question, but I fianlly found it!) Global styles for textblocks also affect labels. I wasn't aware of it, so I didn't added information about it. Anyway, thanks for help.

answered Dec 23 '19 at 18:25

29thDay

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C# WPF preview in IDE is different than while debugging

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