WinUI-DataGrid AlternatingRowBackground not working

[amazatis]

I have created a style for the DataGrid. Unfortunately it does AlternatingRowBackground not work.

<Style                                              TargetType="controls:DataGrid">
    <Setter Property="Background"                   Value="{ThemeResource SystemChromeWhiteColor}" />
    <Setter Property="RowForeground"                Value="Black" />
    <Setter Property="RowBackground"                Value="{ThemeResource SystemChromeWhiteColor}" />
    <Setter Property="AlternatingRowBackground"     Value="{ThemeResource SystemAccentColorLight3}" />
    <Setter Property="HorizontalGridLinesBrush"     Value="{ThemeResource SystemControlBackgroundBaseLowBrush}" />
    <Setter Property="VerticalGridLinesBrush"       Value="{ThemeResource SystemControlBackgroundBaseLowBrush}" />
    <Setter Property="HorizontalAlignment"          Value="Stretch" />
    <Setter Property="VerticalAlignment"            Value="Stretch" />
    <Setter Property="HorizontalScrollBarVisibility" Value="Auto" />
    <Setter Property="VerticalScrollBarVisibility"  Value="Auto" />
    <Setter Property="AutoGenerateColumns"          Value="False" />
    <Setter Property="CanUserSortColumns"           Value="False" />
    <Setter Property="CanUserReorderColumns"        Value="False" />
    <Setter Property="CanUserResizeColumns"         Value="True" />
    <Setter Property="ColumnHeaderHeight"           Value="30" />
    <Setter Property="MaxColumnWidth"               Value="400" />
    <Setter Property="GridLinesVisibility"          Value="All" />
    <Setter Property="IsReadOnly"                   Value="True" />
    <Setter Property="HeadersVisibility"            Value="Column" />
    <Setter Property="SelectionMode"                Value="Single" />
    <Setter Property="FrozenColumnCount"            Value="0" />
    <Setter Property="AreRowGroupHeadersFrozen"     Value="True" />
    <Setter Property="AreRowDetailsFrozen"          Value="True" />
    <Setter Property="RowDetailsVisibilityMode"     Value="Collapsed" />
    <Setter Property="RowHeight"                    Value="30" />
    <Setter Property="UseSystemFocusVisuals"        Value="False" />
</Style>

How can I solve this

[michael-hawker]

@amazatis generally implicit styles don't work the same in UWP/WinUI 3 as they do in WPF. (They can sometimes work if they're instead included in your App.xaml file (or one of it's merged dictionaries).)

Have you tried giving your style a Key and then using that on where you use the DataGrid referencing the StaticResource?

[amazatis]

The Problem was this Color: SystemAccentColorLight3. AlternatingRowBackground can only work with brushes.