Styling the Filtering UI with Distinct Values - DataGrid for MAUI

Environment

Version	Product	Author
6.6.0	DataGrid for MAUI	Dobrinka Yordanova

Description

I want to style the filtering UI in the DataGrid for MAUI by changing the color of the area with the distinct values.

Solution

To style the distinct values area in the filtering UI, you can use an implicit style and customize the colors in the template. Here are the steps to achieve this:

1. Define an implicit style for the DataGridDistinctValuesFilterView type:

<Style TargetType="telerik:DataGridDistinctValuesFilterView">
    <Setter Property="BackgroundColor" Value="Red"/>
    <Setter Property="ControlTemplate" Value="{StaticResource DataGridDistinctValuesFilterView_ControlTemplate}"/>
</Style>

2. Customize the colors in the DataGridDistinctValuesFilterView_ControlTemplate template:

<DataTemplate x:Key="DistinctValue_ItemTemplate">
    <Grid>
        <HorizontalStackLayout telerikControls:RadCheckBox.ToggleOnTap="{Binding Source={x:Reference checkBox}}"
                Margin="5">
            <telerikControls:RadCheckBox x:Name="checkBox"
                        IsChecked="{Binding IsSelected, Mode=TwoWay}" />
            <Label Text="{Binding Text}"
    Margin="8, 0, 0, 0" />
        </HorizontalStackLayout>
    </Grid>
</DataTemplate>

<ControlTemplate x:Key="DataGridDistinctValuesFilterView_ControlTemplate">
    <Grid RowDefinitions="Auto, Auto"
RowSpacing="7">
        <HorizontalStackLayout telerikControls:RadCheckBox.ToggleOnTap="{Binding Source={x:Reference checkBox}}">
            <telerikControls:RadCheckBox x:Name="checkBox"
                                IsChecked="{TemplateBinding SelectAll, Mode=TwoWay}" />
            <Label Text="SelectAll"
    FontAttributes="Bold"
    Margin="8, 0, 0, 0" />
        </HorizontalStackLayout>
        <Grid Grid.Row="1"
IsClippedToBounds="True">
            <Frame
    BackgroundColor="White" />
            <telerikControls:RadItemsControl ItemsSource="{TemplateBinding DistinctValues}" x:Name="itemsControl"
                                    ItemTemplate="{StaticResource DistinctValue_ItemTemplate}" BackgroundColor="LightBlue"
                                    MinimumHeightRequest="{TemplateBinding DistinctValuesMinimumHeight}"
                                    MaximumHeightRequest="{TemplateBinding DistinctValuesMaximumHeight}"
                                    Margin="6, 3" />
        </Grid>
    </Grid>
</ControlTemplate>

3. Define the DataGrid control:

<telerik:RadDataGrid x:Name="datagrid" AutoGenerateColumns="False">
    <telerik:RadDataGrid.Columns>
        <telerik:DataGridTextColumn PropertyName="Country" >
        </telerik:DataGridTextColumn>
        <telerik:DataGridTextColumn PropertyName="Capital"/>
    </telerik:RadDataGrid.Columns>
</telerik:RadDataGrid>