Is there any way to collaps dataform groups?

[Christian]

I have already tried setting the visibility of the editors to "false" (and also removing them completely), but there is still a remaining height for the group (the green part). This does not disappear even if the ContentPadding is set to 0.

Thanks.

[Didi]

Hello,

I have logged a feature request on your behalf for collapsing groups. Cast your vote for the item here: https://feedback.telerik.com/maui/1649062-dataform-provide-an-option-to-collapse-groups 

Regarding to reducing the space, the option I can suggest is setting the space on layout level:

<telerik:RadDataForm.LayoutDefinition>
    <telerik:DataFormVerticalStackLayout Spacing="0"/>
</telerik:RadDataForm.LayoutDefinition>

 

Regarding to the group header customization:

The group has a HeaderStyle property. You can use it to style the groups. Then set the HeightRequest to the style. Check the code snippet. 

 <ContentPage.Resources>
        <ResourceDictionary>
            <Style TargetType="telerik:DataFormGroupContentView" x:Key="contentstyle">
                <Setter Property="BorderColor" Value="Red"/>
                <Setter Property="BorderThickness" Value="0"/>
            </Style>
            <Style x:Key="GroupHeaderViewStyle" TargetType="telerik:DataFormGroupHeaderView">
                <Setter Property="BorderColor" Value="Black" />
                <Setter Property="BorderThickness" Value="0" />
                <Setter Property="HeightRequest" Value="0" />
                <Setter Property="BackgroundColor" Value="LightGray" />
            </Style>
            <Style x:Key="GroupHeaderLabelStyle" TargetType="Label">
                <Setter Property="TextColor" Value="ForestGreen" />
                <Setter Property="FontSize" Value="0" />
                <Setter Property="VerticalTextAlignment" Value="Center" />
                <Setter Property="HorizontalTextAlignment" Value="Center" />
            </Style>
        </ResourceDictionary>
    </ContentPage.Resources>
    <telerik:RadDataForm x:Name="dataFormGrouping" GroupGenerated="dataFormGrouping_GroupGenerated"
                     Grid.Row="1"
                     AutoGenerateItems="False">
        <telerik:RadDataForm.BindingContext>
            <local:EditorsViewModel/>
        </telerik:RadDataForm.BindingContext>
        <telerik:RadDataForm.LayoutDefinition>
            <telerik:DataFormVerticalStackLayout Spacing="0"/>
        </telerik:RadDataForm.LayoutDefinition>
        <telerik:DataFormGroup BackgroundColor="LightBlue" HeaderText="Personal Information" 
                               HeaderStyle="{StaticResource GroupHeaderViewStyle}" 
                               HeaderLabelStyle="{StaticResource GroupHeaderLabelStyle}"
                               ContentStyle="{StaticResource contentstyle}">
            <telerik:DataFormRadEntryEditor PropertyName="FirstName"/>
            <telerik:DataFormRadNumericEditor PropertyName="People" Minimum="1" Maximum="10"/>
            <telerik:DataFormRadComboBoxEditor PropertyName="Accommodation" HeaderText="Accomodation options"/>
        </telerik:DataFormGroup>
        <telerik:DataFormGroup HeaderText="Select Dates" BackgroundColor="LightCoral">
            <telerik:DataFormRadDatePickerEditor PropertyName="StartDate" HeaderText="From:"/>
            <telerik:DataFormRadDatePickerEditor PropertyName="EndDate" HeaderText="To:"/>
        </telerik:DataFormGroup>
        <telerik:DataFormGroup HeaderText="Additional Information" >
            <telerik:DataFormRadTimeSpanPickerEditor PropertyName="Duration" HeaderText="Duration"/>
            <telerik:DataFormRadCheckBoxEditor PropertyName="Visited" HeaderText="Visited before"/>
        </telerik:DataFormGroup>
    </telerik:RadDataForm>

These are the options I can suggest.

Regards,
Didi
Progress Telerik