Converter inside DataTrigger-CodePudding

I'm trying to display a different background color in wpf based on datatrigger and a converter.

<dxg:TableView.RowStyle>
    <Style TargetType="{x:Type dxg:RowControl}">
        <Setter Property="Height" Value="{StaticResource examRowHeight}" />
        <Style.Triggers>
            <DataTrigger Binding="{Binding Row.IsStatusRead, UpdateSourceTrigger=PropertyChanged}" Value="true">
                <Setter Property="Background" Value="Khaki" />
            </DataTrigger>
            <DataTrigger Binding="{Binding Row.IsRecordingFileOpened, UpdateSourceTrigger=PropertyChanged}" Value="true">
                <Setter Property="Background">
                    <Setter.Value>
                        <Binding Path="Row.ExamBlockType">
                            <Binding.Converter>
                                <valueConverters:ExamBlockTypeToBackgroundBrush />
                            </Binding.Converter>
                        </Binding>
                    </Setter.Value>
                </Setter>
            </DataTrigger>
        </Style.Triggers>
    </Style>
</dxg:TableView.RowStyle>

Is this the right way? Converter seems not be fired.

Is there an alternative way to achieve the same behaviour?

Thanks in advance

Ric

CodePudding user response：

Maybe you need the converter on the datatrigger binding.

More like

        <DataTrigger Binding="{Binding Row.IsRecordingFileOpened
          , Converter={StaticResource YourConverter}}" Value="true">

Or maybe you should just use a multiconverter. I'm not totally clear what you're trying to do there.

If there is complicated logic involved then you could encapsulate that in the row viewmodel. Expose a string property used by a brushconverter. It is often simpler to write code in that case.

https://learn.microsoft.com/en-us/dotnet/api/system.windows.media.brushconverter?view=windowsdesktop-7.0

By exposing a string property for each colour you can avoid referencing UI orientated classes in your viewmodel.

CodePudding user response：

I found the following solution and I share it with all that will read this post

<dxg:TableView.RowStyle>
    <Style TargetType="{x:Type dxg:RowControl}">
        <Setter Property="Height" Value="{StaticResource examRowHeight}" />
        <Setter Property="Background">
            <Setter.Value>
                <MultiBinding Converter="{StaticResource ExamBlockTypeToBackgroundBrush}">
                    <Binding Path="Row.IsStatusRead" />
                    <Binding Path="Row.IsRecordingFileOpened" />
                    <Binding Path="Row.ExamBlockType" />
                </MultiBinding>
            </Setter.Value>
        </Setter>
    </Style>
</dxg:TableView.RowStyle>

Where ExamBlockTypeToBackgroundBrush is a custom IMultiValueConverter where is implemented a switch case based on ExamBlockType enum that return

var converter = new System.Windows.Media.BrushConverter(); return (Brush)converter.ConvertFromString("#7500ABAE");