ChangeBlendRenderer.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage x:Class="ArcGIS.Samples.ChangeBlendRenderer.ChangeBlendRenderer"
             xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:esriUI="clr-namespace:Esri.ArcGISRuntime.Maui;assembly=Esri.ArcGISRuntime.Maui">
    <Grid Style="{DynamicResource EsriSampleContainer}">
        <esriUI:MapView x:Name="MyMapView" Style="{DynamicResource EsriSampleGeoView}" />
        <Border Style="{DynamicResource EsriSampleControlPanel}">
            <Grid Padding="5"
                  ColumnDefinitions="auto,*"
                  ColumnSpacing="5"
                  RowDefinitions="auto,auto,auto,auto,auto"
                  RowSpacing="5">
                <Label x:Name="Label_Altitude"
                       Grid.Row="0"
                       Grid.Column="0"
                       Text="Altitude"
                       VerticalTextAlignment="Center" />
                <Slider x:Name="Altitude_Slider"
                        Grid.Row="0"
                        Grid.Column="1"
                        HorizontalOptions="Start"
                        WidthRequest="150" />
                <Label x:Name="Label_Azimuth"
                       Grid.Row="1"
                       Grid.Column="0"
                       Text="Azimuth"
                       VerticalTextAlignment="Center" />
                <Slider x:Name="Azimuth_Slider"
                        Grid.Row="1"
                        Grid.Column="1"
                        HorizontalOptions="Start"
                        WidthRequest="150" />
                <Label x:Name="Label_SlopeTypes"
                       Grid.Row="2"
                       Grid.Column="0"
                       Text="Slope Type" />
                <ListView x:Name="SlopeTypes"
                          Grid.Row="2"
                          Grid.Column="1"
                          HeightRequest="90" />
                <Label x:Name="Label_ColorRamps"
                       Grid.Row="3"
                       Grid.Column="0"
                       Text="Color Ramp" />
                <ListView x:Name="ColorRamps"
                          Grid.Row="3"
                          Grid.Column="1"
                          HeightRequest="90" />
                <Button x:Name="UpdateRenderer"
                        Grid.Row="4"
                        Grid.Column="0"
                        Grid.ColumnSpan="2"
                        Clicked="OnUpdateRendererClicked"
                        HorizontalOptions="FillAndExpand"
                        IsEnabled="True"
                        Text="Update Renderer" />
            </Grid>
        </Border>
    </Grid>
</ContentPage>