FilterItemBase.FilterModelTemplate Property

Gets or sets a template of the filter item’s model.

Namespace: DevExpress.Maui.Editors

Assembly: DevExpress.Maui.Editors.dll

NuGet Package: DevExpress.Maui.Editors

Declaration

public DataTemplate FilterModelTemplate { get; set; }

Property Value

Type	Description
DataTemplate	A data template that specifies the custom editor content.

Remarks

Depending on the filter item, the FilterModelBase class descendants serve as a binding context for the template. Use the FilterItemBase.FilterModel property to obtain the filter model.

Example

You can specify the filter item’s FilterModelTemplate property to implement a custom filter editor. The following example shows how to use DXCollectionView to customize the filter list for a FilterCheckedListItem. A FilterCheckedListModel object serves as a binding context for the template.

XAML

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:dxe="clr-namespace:DevExpress.Maui.Editors;assembly=DevExpress.Maui.Editors"
             xmlns:dxcv="clr-namespace:DevExpress.Maui.CollectionView;assembly=DevExpress.Maui.CollectionView"
             x:Class="DXFilteringApp.FilterPage"
             Title="FilterPage" Shell.NavBarIsVisible="False">
    <ContentPage.Resources>
        <Style TargetType="Label">
            <Setter Property="TextColor" Value="#4E4E4E"/>
            <Setter Property="FontFamily" Value="OpenSansRegular"/>
        </Style>
    </ContentPage.Resources>
    <Grid>
        <VerticalStackLayout>
            <Grid RowDefinitions="40,200,60">
                <Label Text="Select Product:" 
                       Grid.Row="0" 
                       BackgroundColor="#7F512BD4" 
                       Padding="10,0" 
                       FontSize="18"
                       FontAttributes="Bold"
                       Margin="4,4"/>
                <dxe:FilterCheckedListItem Context="{Binding}" 
                                           FieldName="Product.Name" 
                                           Grid.Row="1">
                    <dxe:FilterCheckedListItem.FilterModelTemplate>
                        <DataTemplate>
                            <dxcv:DXCollectionView ItemsSource="{Binding Path=FilterValues}" 
                                                   SelectedItems="{Binding Path=SelectedFilterValues}"
                                                   SelectionMode="Multiple" HeightRequest="200" IsScrollBarVisible="True">
                                <dxcv:DXCollectionView.ItemTemplate>
                                    <DataTemplate>
                                        <Label Text="{Binding Path=Value}" 
                                               HeightRequest="30" Margin="14,0,0,0"/>
                                    </DataTemplate>
                                </dxcv:DXCollectionView.ItemTemplate>
                                <dxcv:DXCollectionView.SelectedItemTemplate>
                                    <DataTemplate>
                                        <Grid ColumnDefinitions="*,40">
                                            <Label Grid.Column="0" 
                                                   Text="{Binding Path=Value}" 
                                                   BackgroundColor="#33808080"
                                                   HeightRequest="30"
                                                   Margin="14,0,0,0"/>
                                            <CheckBox Grid.Column="1" IsChecked="True" 
                                                      BackgroundColor="#33808080" 
                                                      HeightRequest="30"/>
                                        </Grid>
                                    </DataTemplate>
                                </dxcv:DXCollectionView.SelectedItemTemplate>
                            </dxcv:DXCollectionView>
                        </DataTemplate>
                    </dxe:FilterCheckedListItem.FilterModelTemplate>
                </dxe:FilterCheckedListItem>
                <Button Clicked="Button_Clicked" 
                        Text="Show filtered grid data" 
                        Grid.Row="2" WidthRequest="200" Margin="0,10,0,0"/>
            </Grid>
        </VerticalStackLayout>
    </Grid>
</ContentPage>