CODEWITHSUNDEEP
wpfxaml
Yisela
Yisela

Reputation: 6941

Adding a custom style to an element in an existing theme in WPF

I don't think this has been asked before, if so please redirect me. I'm new to WPF, and I've tried everything I could think of with no success, I'm stuck.

I'm using a WPF Theme, and I want to add some custom styles I created to it. For example, all TextBlock are supposed to have Red foreground, but I have a group of TextBlock that I want in Blue.

So far I've been doing this in the xaml, creating a <Style></Style> in the resources, and calling it using Style="{StaticResource StyleName}". But I want to add it to the theme files instead, and I don't know how to give it a name and call it from the xaml.

I guess I'd start with something like this, but how do I link both elements?

In the theme file (MyStyles.xaml or TextEdit.xaml or similar):

<Style TargetType="{x:Type TextBlock}" x:Key="KeyName" ???>
      <Setter Property="Foreground" Value="Blue" />
</Style>

And then in my xaml:

<TextBlock Name="TextBlockName"
      Style="{???}">
</TextBlock>

I need this style to be in the Theme because the program will allow users to change themes, and these styles can't hardcoded be in the xaml.

Upvotes: 0

Views: 888

Answers (2)

JBG
JBG

Reputation: 1098

You want to first merge that resource file into your resources :

<UserControl.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="MyStyles.xaml" />
        </ResourceDictionary.MergedDictionaries>
        <dxc:IntToBooleanConverter x:Key="IntToBooleanConverter" />
        (...)
    </ResourceDictionary>
</UserControl.Resources>

and then you can use it with

<TextBlock Name="TextBlockName" Style="{StaticResource KeyName}" />

Upvotes: 1

sa_ddam213
sa_ddam213

Reputation: 43636

If you have loaded your Theme file you can access any of the Styles/Resources the same way as local Styles/Resources

If you use Style="{StaticResource StyleName}" it will look first in the Window/UserControl, if not found it will look though the loaded Resource dictionaries. so as long as you have loaded the Theme (Resource Dictionary) it will work fine.

Upvotes: 1

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