CODEWITHSUNDEEP
c#wpfxamlresourcedictionary
shreeya
shreeya

Reputation: 145

Use ResourceDictionary with other Styles in WPF

I am trying to use a ResourceDictionary and a Style in my WPF program. When I only have ResourceDictionary in <Window.Resources> everything works fine but as soon as I add a <Style> the program displays "Resource not found" for the Dictionary and I get an error "The resource "PlusMinusExpander" could not be resolved."

<Window.Resources>
    <Style x:Key="CurrencyCellStyle" TargetType="{x:Type DataGridCell}">
        <Setter Property="Foreground" Value="#dddddd" />
        <Style.Triggers>
            <Trigger Property="IsSelected" Value="True">
                <Setter Property="Background" Value="Transparent"/>
                <Setter Property="BorderBrush" Value="Transparent"/>
            </Trigger>
        </Style.Triggers>
    </Style>

    <ResourceDictionary x:Key="hello" Source="Assets/PlusMinusExpanderStyles.xaml" />
</Window.Resources>


<Expander Header="Plus Minus Expander" Style="{StaticResource PlusMinusExpander}" HorizontalAlignment="Right" Width="292">
    <Grid Background="Transparent">
        <TextBlock>Item1</TextBlock>
     </Grid>
</Expander>

I want to be able to do Style="{StaticResource PlusMinusExpander}" even after adding the CurrencyCellStyle Style. I have seen similar questions online but none of their solutions have worked for me yet. Is there a way to use both the Style and the ResourceDictionary?

Upvotes: 3

Views: 1949

Answers (1)

walterlv
walterlv

Reputation: 2376

The type of Window.Resources property is ResourceDictionary, so cannot put two different types of XAML element as brothers. Instead, you should:

  • Put a separated ResourceDictionary into the Window.Resources property and write the Style inside the ResourceDictionary.
  • Remove the x:Key property from the ResourceDictionary.
<FrameworkElement.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="Assets/PlusMinusExpanderStyles.xaml" />
        </ResourceDictionary.MergedDictionaries>
        <Style x:Key="CurrencyCellStyle" TargetType="{x:Type DataGridCell}">
            <Setter Property="Foreground" Value="#dddddd" />
            <Style.Triggers>
                <Trigger Property="IsSelected" Value="True">
                    <Setter Property="Background" Value="Transparent"/>
                    <Setter Property="BorderBrush" Value="Transparent"/>
                </Trigger>
            </Style.Triggers>
        </Style>
    </ResourceDictionary>
</FrameworkElement.Resources>

Upvotes: 7

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