DataTemplateSelector not working with ImageryLayer.MapMarkerSetting.TooltipSettings.TooltipTemplate

[Tito]

Hi,

I'm trying to use the DataTemplateSelector on my Map Marker Tooltip and the OnSelectTemplate method is not called.

I have the following error message: System.InvalidOperationException: 'LoadTemplate should not be null'

XAML:

    <ContentPage.Resources>

        <ResourceDictionary>

            <DataTemplate x:Key="SrcTooltipTemplate">

               ...

            </DataTemplate>

            <DataTemplate x:Key="DstTooltipTemplate">

              ...

            </DataTemplate>

            <local:TooltipDataTemplateSelector

                x:Key="MarkerTooltipDataTemplateSelector"

                SourceTooltipTemplate="{StaticResource SrcTooltipTemplate}"

                DestinationTooltipTemplate="{StaticResource DstTooltipTemplate}" />

        </ResourceDictionary>

    </ContentPage.Resources>

    <ContentPage.Content>

<maps:SfMaps

                            IsVisible="True"

                            ZoomLevel="{Binding MapZoom}">

                            <maps:SfMaps.Layers>

                                <maps:ImageryLayer

                                    BingMapKey="xxxxxxxxxxxxx"

                                    BingMapStyle="Road"

                                    GeoCoordinateChanged="Map_GeoCoordinateChanged"

                                    GeoCoordinates="{Binding GeoCoordinates}"

                                    LayerType="Bing"

                                    MarkerTemplate="{StaticResource markerTemplate}"

                                    Markers="{Binding MyMarkers}">

                                    <maps:ImageryLayer.MarkerSettings>

                                        <maps:MapMarkerSetting>

                                            <maps:MapMarkerSetting.TooltipSettings>

                                                <maps:TooltipSetting

                                                    PointerLength="16"

                                                    ShowTooltip="True"

                                                    TooltipTemplate="{StaticResource MarkerTooltipDataTemplateSelector}"

                                                    ValuePath="Label"

                                                    Duration="10000" />

                                            </maps:MapMarkerSetting.TooltipSettings>

                                        </maps:MapMarkerSetting>

                                    </maps:ImageryLayer.MarkerSettings>

                                </maps:ImageryLayer>

                            </maps:SfMaps.Layers>

                        </maps:SfMaps>

    </ContentPage.Content>

Template Selector CLASS:

    public class TooltipDataTemplateSelector : DataTemplateSelector

    {

        public DataTemplate SourceTooltipTemplate { get; set; }

        public DataTemplate DestinationTooltipTemplate { get; set; }

        protected override DataTemplate OnSelectTemplate(object item, BindableObject container)

        {

            var marker = item as CustomMarker;

            switch (marker.MarkerType)

            {

                case Shared.MapPositionEnum.Start:

                    return SourceTooltipTemplate;

                case Shared.MapPositionEnum.Destination:

                    return DestinationTooltipTemplate;

            }

        }

    }

[Ramya Soundar Rajan]

Hi Tito, 

 

On further analysis with your updated query and the provided stack trace, currently we don’t have DataTemplateSelector support for the marker’s tooltip. We will check the feasibility to consider as a feature request and update you the status on August 25, 2020. 

 

Regards, 

Ramya S 

[Ramya Soundar Rajan]

Hi Tito,  

 

We have considered the reported problem as feature enhancement and please find the feedback task below here. 

  

Feedback link: https://www.syncfusion.com/feedback/17265 

 

We will include this feature in our upcoming Volume 3 release which is expected to be rolled out on end of September 2020. 

 

Regards, 

Ramya S 

[Ramya Soundar Rajan]

Hi Tito, 

 

We are glad to announce that our Essential Studio 2020 Volume 3 release v18.3.0.35 is rolled out and is available for download under the following link. 

 

https://www.syncfusion.com/forums/158306/essential-studio-2020-volume-3-release-v18-3-0-35-is-available-for-download 

 

We thank you for your support and appreciate your patience in waiting for this release. Please get in touch with us if you would require any further assistance. 

 

Regards, 

Ramya S