Modify the ControlTemplate of the CollectionEditor

Environment

Product RadPropertyGrid for WPF

Description

How to updade the visual representation of the CollectionEditor control.

Solution

Extract and edit its ControlTemplate, modify it so that it suits your needs and apply it through a style targeting CollectionEditor. Example 1 demonstrates how an additional button can be added to the template.

Example 1: Modifying the CollectionEditor ControlTemplate in the Fluent theme

 <Application.Resources> 
    <ResourceDictionary> 
        <ControlTemplate x:Key="CollectionEditor_Template" TargetType="telerik:CollectionEditor"> 
            <Border x:Name="PART_RootBorder" 
            Height="{Binding RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay, Path=Height}" 
            Width="{Binding RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay, Path=Width}" 
            BorderBrush="{TemplateBinding BorderBrush}" 
            BorderThickness="{TemplateBinding BorderThickness}" 
            Background="{TemplateBinding Background}"> 
                <Grid Background="Transparent"> 
                    <Grid.RowDefinitions> 
                        <RowDefinition Height="auto"/> 
                        <RowDefinition Height=""/> 
                        <RowDefinition Height="auto"/> 
                    </Grid.RowDefinitions> 
                    <Grid.ColumnDefinitions> 
                        <ColumnDefinition Width="2"/> 
                        <ColumnDefinition Width="3"/> 
                    </Grid.ColumnDefinitions> 
                    <Border x:Name="Header" 
                    MinHeight="36" 
                    Grid.ColumnSpan="2" 
                    Visibility="{Binding Header, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource DescriptionVisibilityConverter}}" 
                    Background="{telerik:FluentResource ResourceKey=MainBrush}"> 
                        <ContentControl 
                        Margin="{TemplateBinding Padding}" 
                        Content="{TemplateBinding Header}" 
                        VerticalAlignment="{TemplateBinding VerticalContentAlignment}" 
                        HorizontalAlignment="{TemplateBinding VerticalContentAlignment}"/> 
                    </Border> 
                    <Grid Grid.Row="1"> 
                        <Grid.RowDefinitions> 
                            <RowDefinition Height="Auto"/> 
                            <RowDefinition Height=""/> 
                        </Grid.RowDefinitions> 
                        <Border Background="{telerik:FluentResource ResourceKey=MainBrush}" MinHeight="36"> 
                            <Grid MaxHeight="36"> 
                                <TextBlock telerik:LocalizationManager.ResourceKey="CollectionEditorItems" VerticalAlignment="Center" Margin="{TemplateBinding Padding}"/> 
                                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right"> 
                                    <telerik:RadButton x:Name="moveDownButton" 
                                    IsEnabled="{TemplateBinding IsEnabled}" 
                                    telerik:TouchManager.TouchMode="None" 
                                    Command="{x:Static telerik:CollectionEditorCommands.MoveCurrentToNext}" 
                                    MinWidth="28" 
                                    MinHeight="28" 
                                    Margin="0 0 5 0" 
                                    Padding="0" 
                                    HorizontalAlignment="Center" 
                                    VerticalAlignment="Center"> 
                                        <telerik:RadGlyph FontSize="16" HorizontalAlignment="Center" VerticalAlignment="Center" Glyph="{StaticResource GlyphArrowChevronDown}"/> 
                                    </telerik:RadButton> 
                                    <telerik:RadButton x:Name="moveUpButton" 
                                    IsEnabled="{TemplateBinding IsEnabled}" 
                                    telerik:TouchManager.TouchMode="None" 
                                    Command="{x:Static telerik:CollectionEditorCommands.MoveCurrentToPrevious}" 
                                    MinWidth="28" 
                                    MinHeight="28" 
                                    Padding="0" 
                                    HorizontalAlignment="Center" 
                                    VerticalAlignment="Center"> 
                                        <telerik:RadGlyph FontSize="16" HorizontalAlignment="Center" VerticalAlignment="Center" Glyph="{StaticResource GlyphArrowChevronUp}"/> 
                                    </telerik:RadButton> 
                                </StackPanel> 
                            </Grid> 
                        </Border> 
                        <ListBox x:Name="PART_CollectionListBox" 
                        Grid.Row="1" 
                        ItemTemplate="{TemplateBinding ItemTemplate}" 
                        IsEnabled="{TemplateBinding IsEnabled}" 
                        BorderBrush="{TemplateBinding BorderBrush}" 
                        BorderThickness="1 0 0 0" 
                        Background="{TemplateBinding Background}" 
                        ItemsSource="{TemplateBinding CollectionView}" 
                        SelectedItem="{Binding RelativeSource={RelativeSource Mode=TemplatedParent}, Path=CurrentItem, Mode=TwoWay}"/> 
                    </Grid> 
                    <Grid Grid.Row="1" Grid.Column="2"> 
                        <Grid.RowDefinitions> 
                            <RowDefinition Height="Auto"/> 
                            <RowDefinition/> 
                        </Grid.RowDefinitions> 
                        <Border Background="{telerik:FluentResource ResourceKey=MainBrush}" MinHeight="36" MaxHeight="36"> 
                            <TextBlock telerik:LocalizationManager.ResourceKey="CollectionEditorProperties" VerticalAlignment="Center" Margin="{TemplateBinding Padding}"/> 
                        </Border> 
                        <telerik:RadPropertyGrid 
                        Grid.Row="1" 
                        BorderThickness="1 0" 
                        IsReadOnly="{TemplateBinding IsReadOnly}" 
                        IsEnabled="{TemplateBinding IsEnabled}" 
                        Item="{TemplateBinding CurrentItem}" 
                        BorderBrush="{TemplateBinding BorderBrush}" 
                        LabelColumnWidth="100" 
                        SortAndGroupButtonsVisibility="Collapsed" 
                        SearchBoxVisibility="Collapsed" 
                        DescriptionPanelVisibility="Collapsed"/> 
                    </Grid> 
                    <Border x:Name="FooterPanel_Background" 
                    BorderBrush="{TemplateBinding BorderBrush}" 
                    Grid.Row="2" 
                    BorderThickness="0" 
                    Grid.ColumnSpan="2" 
                    Background="{telerik:FluentResource ResourceKey=MainBrush}"> 
                        <Grid> 
                            <StackPanel Orientation="Horizontal" HorizontalAlignment="Left" Margin="0 5"> 
                                <telerik:RadButton 
                                IsEnabled="{TemplateBinding IsEnabled}" 
                                telerik:TouchManager.TouchMode="None" 
                                MinWidth="65" 
                                telerik:LocalizationManager.ResourceKey="CollectionEditorAdd" 
                                Command="{x:Static telerik:CollectionEditorCommands.AddNew}" 
                                Margin="10 0"/> 
                                <telerik:RadButton 
                                IsEnabled="{TemplateBinding IsEnabled}" 
                                telerik:TouchManager.TouchMode="None" 
                                MinWidth="65" 
                                telerik:LocalizationManager.ResourceKey="CollectionEditorRemove" 
                                Command="{x:Static telerik:CollectionEditorCommands.Delete}"/> 
 
                                <!-- Custom button--> 
                                <telerik:RadButton  
                                IsEnabled="{TemplateBinding IsEnabled}" 
                                telerik:TouchManager.TouchMode="None" 
                                MinWidth="65" 
                                Margin="10 0" 
                                Content="My button"/> 
                            </StackPanel> 
                            <Thumb x:Name="PART_ResizeThumb" Style="{StaticResource CollectionEditorGripperStyle}" Visibility="{TemplateBinding ResizeGripperVisibility}"/> 
                        </Grid> 
                    </Border> 
                </Grid> 
            </Border> 
        </ControlTemplate> 
        <Style TargetType="telerik:CollectionEditor" BasedOn="{StaticResource CollectionEditorStyle}"> 
            <Setter Property="Template" Value="{StaticResource CollectionEditor_Template}"/> 
        </Style> 
    </ResourceDictionary> 
</Application.Resources> 

Figure 1: CollectionEditor with modified ControlTemplate in the Fluent theme

CollectionEditor with modified ControlTemplate in the Fluent theme

If you are using a different theme, make sure to exract and edit the ControlTemplate for the corresponding theme.

See Also

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