topic Re: modify symbol on legend that is rendered from feature service in .NET Maps SDK Questions

modify symbol on legend that is rendered from feature service

sriharshaUdathanapalli — Wed, 22 Aug 2018 21:23:58 GMT

Hello everyone,

I'm kind of stuck with how to modify symbol on legend at run time that is rendered from feature service, I'm using a Layer Legend control from UI toolkit and my service is returning same labels and symbols for two items and the legend is showing the symbol twice

And also is there a way to disable selectionMode on Legend items in Legend control from Toolkit?

Re: modify symbol on legend that is rendered from feature service

JenniferNery — Thu, 23 Aug 2018 21:16:48 GMT

Legend will use the same symbology applied to the features so if you set FeatureLayer.Renderer on one of them to differentiate between the two.

For example,

((FeatureLayer)e.Layer).Renderer = new SimpleRenderer(new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.Diamond, Color.Blue, 10d)) { Label = "New Label" };

Legend will pick up this new symbol and label.

What platform are you using?

Re: modify symbol on legend that is rendered from feature service

sriharshaUdathanapalli — Thu, 23 Aug 2018 21:26:49 GMT

Thanks for your reply,

I'm using this in a UWP application.Yes that is what i did to get around the issue.

I created a custom uniqueValue renderer to override the symbology from the service.

var Renderer = new UniqueValueRenderer();
Renderer.FieldNames.Add("TYPE");
var outlineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, Color.White, 2.0);
var csoSimpleMarker = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.Circle, Color.Blue, 12)
{
Outline = outlineSymbol
};

But I'm still not able to turn off the selection Mode in the Legend Control.

Re: modify symbol on legend that is rendered from feature service

JenniferNery — Sun, 12 Dec 2021 07:58:20 GMT

Thank you, we should fix that in our LayerLegend. I just logged this issue

Meanwhile, you can update the Template style by adding this resource

<Grid.Resources>
    <Style TargetType="esriTK:LayerLegend">
        <Setter Property="Template">
            <Setter.Value>
                    <ControlTemplate>
                        <ItemsControl x:Name="ItemsList" 
                      ItemTemplate="{Binding RelativeSource={RelativeSource Mode=TemplatedParent}, Path=ItemTemplate}" 
                      ItemsPanel="{Binding RelativeSource={RelativeSource Mode=TemplatedParent}, Path=ItemsPanel}" />
                    </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Grid.Resources>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍