Question

I have ran into a problem that I am completely clueless about. I am receiving the following error message:

The specified Visual and the Visual do not share a common ancestor, so there is no valid transformation between the two visuals.

This is being called when the user clicks on a point on the map. Any help would be appreciated. I have attached snippets of the error. If you need anymore code samples, just let me know.

Here is my relevant XAML:

(<)inf:DialogWindowBase x:Class=”Alliance.CommonUI.Views.Maps.EsriMapView”

<Grid>

<Grid>
 <DataTemplate x:Key="MyFeatureLayerInfoWindowTemplate">
                    <TextBlock Text="Content" Foreground="White" FontSize="12" />
                </DataTemplate>
                <esri:SimpleRenderer x:Key="MySimpleRenderer">
                    <esri:SimpleRenderer.Symbol>
                        <esri:SimpleFillSymbol Fill="#01FFFFFF" BorderBrush="#88000000" BorderThickness="2" />
                    </esri:SimpleRenderer.Symbol>
                </esri:SimpleRenderer>
 </Grid.Resources>

            <esri:Map x:Name="MyMap" Background="#FFE3E3E3" WrapAround="True" MouseClick="MyMap_MouseClick" MouseRightButtonDown="MyMap_MouseRightButtonDown" Extent="-9834972.92753924,4441899.425293319,-9833977.88119163, 4442762.485358352">
                <esri:ArcGISTiledMapServiceLayer ID="MyLayer" Url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer" />
                <!--<esri:ArcGISLocalDynamicMapServiceLayer ID="Calvert_City" Path="C:\Users\jessical\Documents\ArcGIS\CalvertCity_Test.mpk"/>-->
                <esri:ArcGISDynamicMapServiceLayer  ID="Calvert_City" Url="http://localhost:6080/arcgis/rest/services/CalvertCity_Test_2/MapServer"/>
                <esri:FeatureLayer ID="MyFeatureLayer"  Url="http://localhost:6080/arcgis/rest/services/CalvertCity_Test_2/MapServer/0"
                            Renderer="{StaticResource MySimpleRenderer}" />
</esri:Map>

            <Border Background="{StaticResource PanelGradient}" BorderThickness="1" CornerRadius="5"
            HorizontalAlignment="Left"  VerticalAlignment="Top"
            Margin="20" Padding="5" BorderBrush="Black" >
                <esri:Legend Map="{Binding ElementName=MyMap}"
                         LayerIDs="Calvert_City"
                         LayerItemsMode="Tree"
                         ShowOnlyVisibleLayers="False"
                         Refreshed="Legend_Refreshed">
                    <esri:Legend.MapLayerTemplate>
                        <DataTemplate>
                            <StackPanel Orientation="Horizontal">
                                <CheckBox Content="{Binding Label}"
                                    IsChecked="{Binding IsEnabled, Mode=TwoWay}"
                                    IsEnabled="{Binding IsInScaleRange}" >
                                </CheckBox>
                                <Slider Maximum="1" Value="{Binding Layer.Opacity, Mode=TwoWay}" Width="50" />
                            </StackPanel>
                        </DataTemplate>
                    </esri:Legend.MapLayerTemplate>
                    <esri:Legend.LayerTemplate>
                        <DataTemplate>
                            <CheckBox Content="{Binding Label}"
                            IsChecked="{Binding IsEnabled, Mode=TwoWay}"
                            IsEnabled="{Binding IsInScaleRange}" >
                            </CheckBox>
                        </DataTemplate>
                    </esri:Legend.LayerTemplate>
                </esri:Legend>
            </Border>
            <esri:InfoWindow x:Name="MyInfoWindow"
                         Padding="2"
                         CornerRadius="20"
                         Background="{StaticResource PanelGradient}"
                         Map="{Binding ElementName=MyMap}"
                         ContentTemplate="{StaticResource MyFeatureLayerInfoWindowTemplate}"
                         MouseLeftButtonUp="MyInfoWindow_MouseLeftButtonUp" />

Answer 1

You’re using TransformToVisual. It should be TransformToAncestor.