Hi All,
I am using WPF 100.5 runtime API with MVVM framework. I have integrated toolkit:LayerLegend control in separate user control which has his own view model.
I am passing Map.Operationlayers from MainMapVM to LegendVM and binding to public Layercollection property in usercontrol. This approach is working fine but i want to extract only specific layers and show in legend - this time it fails and throwing 'Object already Owned exception - from ARCGIS Runtime'
My sample code.
1. MapControlViewModel
public class MapControlViewModel : ViewModelBase
{
public LayerListControlViewModel LayerlistControlVM { get; set; } = new LayerListControlViewModel();
..
public void click()
{
//Passing operation layers to legend user control
LayerlistControlVM.InitializeLayerListControl(Map.OperationalLayers);
}
}
----------------------------------------------------------------------------------------------------------------------------------------------------
2. LayerListControlViewModel
public class LayerListControlViewModel : ViewModelBase
{
public LayerCollection OperationalLayers { get; set; } = new LayerCollection();
..
public void InitializeLayerListControl(LayerCollection layerColl)
{
OperationalLayers.Add(layerColl[0]); Exception on this line - 'Object already owned.: Already owned'
//OperationalLayers = layerColl; Works well
RaisePropertyChanged(() => OperationalLayers);
}
}
----------------------------------------------------------------------------------------------------------------------------------------------------
2.1 LayerListControl.XAML
<ScrollViewer>
<ItemsControl ItemsSource="{Binding OperationalLayers, Mode=OneWay}" Margin="10" >
....
....
</ItemsControl>
</ScrollViewer>
----------------------------------------------------------------------------------------------------------------------------------------------------
I am not sure why i am getting exception while extracting data from Layercollection Object and assign to Public property with same class.
Any help would be appreciated.
Regards,
Prashant
