Simple Renderer

This sample demonstrates the dynamic layers functionality of the ArcGIS Runtime by overriding the default renderers for the Cities, Highways and States feature layers (originally defined within ArcGIS for Desktop) with new renderers defined via the ArcGIS Runtime client API. Crucially, this new rendering information is applied at the "server" level when rendering the map image. The user interface controls allow you to apply a new SimpleRenderer to each feature layer independently with the apppriate symbol type for the layer's geometry being automatically selected in each case: SimpleMarkerSymbol, SimpleLineSymbol or SimpleFillSymbol. The symbol colors, thickness, and type are randomly generated by means of two utility functions which either create a random Color or a random enumeration value.

XAML

<UserControl x:Class="ArcGISWPFSDK.DynamicLayersSimpleRenderer"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:esri="http://schemas.esri.com/arcgis/client/2009">
    <Grid>
        <Grid.Resources>
            <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
            <LinearGradientBrush x:Key="PanelGradient" EndPoint="0.5,1" StartPoint="0.5,0">
                <LinearGradientBrush.RelativeTransform>
                    <TransformGroup>
                        <ScaleTransform CenterY="0.5" CenterX="0.5"/>
                        <SkewTransform CenterY="0.5" CenterX="0.5"/>
                        <RotateTransform Angle="176" CenterY="0.5" CenterX="0.5"/>
                        <TranslateTransform/>
                    </TransformGroup>
                </LinearGradientBrush.RelativeTransform>
                <GradientStop Color="#FF145787" Offset="0.16"/>
                <GradientStop Color="#FF3D7FAC" Offset="0.502"/>
                <GradientStop Color="#FF88C5EF" Offset="0.984"/>
            </LinearGradientBrush>
        </Grid.Resources>

        <esri:Map x:Name="_mapControl" Background="#FFE3E3E3">

        </esri:Map>

        <StackPanel Orientation="Vertical" Margin="10" HorizontalAlignment="Right" VerticalAlignment="Top">
            <Grid x:Name="DynamicLayersUiGrid" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,5,5,0" Width="200">
                <Rectangle Fill="{StaticResource PanelGradient}" Stroke="Gray" Margin="0,0,0,5">
                    <Rectangle.Effect>
                        <DropShadowEffect/>
                    </Rectangle.Effect>
                </Rectangle>
                <StackPanel Orientation="Vertical" VerticalAlignment="Top">
                    <Canvas Margin="5,5,5,5" Height="80">
                        <Rectangle Height="80" Width="190" RadiusX="5" RadiusY="5" Fill="#DDFFFFFF" Stroke="DarkGray"/>
                        <StackPanel>
                            <TextBlock Text="Cities:" Foreground="Black" Margin="5,5,5,5"/>
                            <Button x:Name="ChangeCitiesRendererButton" Content="Change Cities Renderer" Foreground="Black" 
                            Margin="5,0,5,5" Width="180" Click="ChangeCitiesRendererButton_Click" />
                            <Button x:Name="ResetCitiesRendererButton" Content="Reset Cities Renderer" Foreground="Black" 
                            Margin="5,0,5,5" Width="180" Click="ResetCitiesRendererButton_Click" />
                        </StackPanel>
                    </Canvas>
                    <Canvas Margin="5,0,5,5" Height="80">
                        <Rectangle Height="80" Width="190" RadiusX="5" RadiusY="5" Fill="#DDFFFFFF" Stroke="DarkGray"/>
                        <StackPanel>
                            <TextBlock Text="Highways:" Foreground="Black" Margin="5,5,5,5"/>
                            <Button x:Name="ChangeHighwaysRendererButton" Content="Change Highways Renderer" Foreground="Black" 
                             Margin="5,0,5,5" Width="180" Click="ChangeHighwaysRendererButton_Click" />
                            <Button x:Name="ResetHighwaysRendererButton" Content="Reset Highways Renderer" Foreground="Black" 
                            Margin="5,0,5,5" Width="180" Click="ResetHighwaysRendererButton_Click" />
                        </StackPanel>
                    </Canvas>
                    <Canvas Margin="5,0,5,5" Height="80">
                        <Rectangle Height="80" Width="190" RadiusX="5" RadiusY="5" Fill="#DDFFFFFF" Stroke="DarkGray"/>
                        <StackPanel>
                            <TextBlock Text="States:" Foreground="Black" Margin="5,5,5,5"/>
                            <Button x:Name="ChangeStatesRendererButton" Content="Change States Renderer" Foreground="Black" 
                            Margin="5,0,5,5" Width="180" Click="ChangeStatesRendererButton_Click" />
                            <Button x:Name="ResetStatesRendererButton" Content="Reset States Renderer" Foreground="Black" 
                            Margin="5,0,5,5" Width="180" Click="ResetStatesRendererButton_Click" />
                        </StackPanel>
                    </Canvas>
                    <Canvas Margin="5,0,5,10" Height="30">
                        <Rectangle Height="30" Width="190" RadiusX="5" RadiusY="5" Fill="#DDFFFFFF" Stroke="DarkGray"/>
                        <StackPanel>
                            <Button x:Name="ResetAllRenderersButton" Content="Reset All Renderers" Foreground="Black" 
                            Margin="5,5,5,5" Width="180" Click="ResetAllRenderersButton_Click" />
                        </StackPanel>
                    </Canvas>
                </StackPanel>
            </Grid>
        </StackPanel>
        <ProgressBar x:Name="MyProgressBar" IsIndeterminate="True" VerticalAlignment="Bottom" Width="200" Height="20" Margin="10" Visibility="{Binding Path=IsBusy, Converter={StaticResource BooleanToVisibilityConverter}}"></ProgressBar>
    </Grid>
</UserControl>

C#

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using ESRI.ArcGIS.Client.Local;
using ESRI.ArcGIS.Client;
using ESRI.ArcGIS.Client.Symbols;
using System.Linq;
using System.ComponentModel;


namespace ArcGISWPFSDK
{
    public partial class DynamicLayersSimpleRenderer : UserControl, INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        private bool _isBusy = true;

        public bool IsBusy
        {
            get
            {
                return _isBusy;
            }
            set
            {
                _isBusy = value;

                if (PropertyChanged != null)
                {

                    PropertyChanged(this, new PropertyChangedEventArgs("IsBusy"));
                }
            }
        }    
        // Member variable for the dynamic map service layer
        ArcGISLocalDynamicMapServiceLayer _arcGISLocalDynamicMapServiceLayer;

        // Member variable for the random number generator to create symbol sizes, line widths, etc.
        Random _random = new Random();

        // Member variables representing the LayerDrawingOptions definition for each layer.
        LayerDrawingOptions _citiesLayerDrawingOptions;
        LayerDrawingOptions _highwaysLayerDrawingOptions;
        LayerDrawingOptions _statesLayerDrawingOptions;

        public DynamicLayersSimpleRenderer()
        {
            InitializeComponent();

            // Disable the UI Grid until the ArcGISDynamicMapServiceLayer has initialized.
            DynamicLayersUiGrid.IsEnabled = false;

            // Create a new local map service from an MPK and enable the Dynamic Layers capability
            LocalMapService localMapService = new LocalMapService()
            {
                Path = @"..\Data\DynamicLayers\USA.mpk",
                EnableDynamicLayers = true
            };

            // Start the local map service
            localMapService.StartAsync((mapService) =>
            {
                // Once the LocalMapService has started create a new local dynamic map service layer
                _arcGISLocalDynamicMapServiceLayer = new ArcGISLocalDynamicMapServiceLayer(localMapService)
                {
                    ImageFormat = ArcGISDynamicMapServiceLayer.RestImageFormat.PNG32,
                };

                // Set up an event handler for the layer initialized event
                _arcGISLocalDynamicMapServiceLayer.Initialized += (s, e) =>
                {
                    //Enable the UI once the layer has initialized
                    DynamicLayersUiGrid.IsEnabled = true;
                    DataContext = this;
                    IsBusy = false;
                };

                // Add the layer to the map
                _mapControl.Layers.Add(_arcGISLocalDynamicMapServiceLayer);
            });
        }

        private void ChangeCitiesRendererButton_Click(object sender, RoutedEventArgs e)
        {
            // If there is already an instance of the Cities LayerDrawOptions definition remove it from the layer's LayerDrawingOptions collection.
            if (_citiesLayerDrawingOptions != null)
                ResetRenderer(_citiesLayerDrawingOptions, false);

            // Create a new Layer Drawing Options object which will define the new renderer for a specific layer in the underlying local map service
            _citiesLayerDrawingOptions = new LayerDrawingOptions();

            // Set the ID of the map layer in the local map service
            _citiesLayerDrawingOptions.LayerID = 0;

            // Create a new simple renderer with a simple marker symbol (for feature layers of point geometry type)
            _citiesLayerDrawingOptions.Renderer = new SimpleRenderer()
           {
               Symbol = new SimpleMarkerSymbol()
               {
                   Color = new SolidColorBrush(GetRandomColor()),
                   Size = _random.Next(4, 12),
                   Style = GetRandomEnumValue<SimpleMarkerSymbol.SimpleMarkerStyle>()
               }
           };

            // Create a new layer drawing options collection and set the layer drawing options property on the local dynamic map service layer
            if (_arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions == null)
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions = new LayerDrawingOptionsCollection() { _citiesLayerDrawingOptions };
            else
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Add(_citiesLayerDrawingOptions);

            // Refresh the layer
            _arcGISLocalDynamicMapServiceLayer.Refresh();
        }

        private void ChangeHighwaysRendererButton_Click(object sender, RoutedEventArgs e)
        {
            // If there is already an instance of the Highways LayerDrawOptions definition remove it from the layer's LayerDrawingOptions collection.
            if (_highwaysLayerDrawingOptions != null)
                ResetRenderer(_highwaysLayerDrawingOptions, false);

            // Create a new Layer Drawing Options object which will define the new renderer for a specific layer in the underlying local map service
            _highwaysLayerDrawingOptions = new LayerDrawingOptions();

            // Set the ID of the map layer in the local map service
            _highwaysLayerDrawingOptions.LayerID = 1;

            // Create a new simple renderer with a simple line symbol and set the renderer property on the layer drawing options object
            _highwaysLayerDrawingOptions.Renderer = new SimpleRenderer()
            {
                Symbol = new SimpleLineSymbol()
                {
                    Color = new SolidColorBrush(GetRandomColor()),
                    Width = _random.Next(4, 12),
                    Style = GetRandomEnumValue<SimpleLineSymbol.LineStyle>()
                }
            };

            // Create a new layer drawing options collection and set the layer drawing options property on the local dynamic map service layer
            if (_arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions == null)
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions = new LayerDrawingOptionsCollection() { _highwaysLayerDrawingOptions };
            else
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Add(_highwaysLayerDrawingOptions);

            // Refresh the layer
            _arcGISLocalDynamicMapServiceLayer.Refresh();
        }

        private void ChangeStatesRendererButton_Click(object sender, RoutedEventArgs e)
        {
            // If there is already an instance of the States LayerDrawOptions definition remove it from the layer's LayerDrawingOptions collection.
            if (_statesLayerDrawingOptions != null)
                ResetRenderer(_statesLayerDrawingOptions, false);

            // Create a new Layer Drawing Options object which will define the new renderer for a specific layer in the underlying local map service
            _statesLayerDrawingOptions = new LayerDrawingOptions();

            // Set the ID of the map layer in the local map service
            _statesLayerDrawingOptions.LayerID = 2;

            // Create a new simple renderer with a simple fill symbol and set the renderer property on the layer drawing options object
            _statesLayerDrawingOptions.Renderer = new SimpleRenderer()
            {
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(GetRandomColor()),
                    BorderBrush = new SolidColorBrush(GetRandomColor()),
                    BorderThickness = _random.Next(1, 6),
                }
            };

            // Create a new layer drawing options collection and set the layer drawing options property on the local dynamic map service layer
            if (_arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions == null)
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions = new LayerDrawingOptionsCollection() { _statesLayerDrawingOptions };
            else
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Add(_statesLayerDrawingOptions);

            // Refresh the layer to apply the changes to the layer
            _arcGISLocalDynamicMapServiceLayer.Refresh();
        }

        private void ResetCitiesRendererButton_Click(object sender, RoutedEventArgs e)
        {
            // Remove the Cities LayerDrawOptions definition from the layer's LayerDrawingOptions collection and refresh the map.
            ResetRenderer(_citiesLayerDrawingOptions, true);
        }

        private void ResetHighwaysRendererButton_Click(object sender, RoutedEventArgs e)
        {
            // Remove the Highways LayerDrawOptions definition from the layer's LayerDrawingOptions collection and refresh the map.
            ResetRenderer(_highwaysLayerDrawingOptions, true);
        }

        private void ResetStatesRendererButton_Click(object sender, RoutedEventArgs e)
        {
            // Remove the States LayerDrawOptions definition from the layer's LayerDrawingOptions collection and refresh the map.
            ResetRenderer(_statesLayerDrawingOptions, true);
        }

        private void ResetAllRenderersButton_Click(object sender, RoutedEventArgs e)
        {
            // Exit if the layer has no LayerDrawingOptions
            if (_arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions == null || _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Count == 0)
                return;

            // Clear the LayerDrawingOptions
            _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Clear();
            _arcGISLocalDynamicMapServiceLayer.Refresh();
        }

        public void ResetRenderer(LayerDrawingOptions layerDrawingOptions, bool refreshMap)
        {
            // Exit if the layer has no LayerDrawingOptions
            if (_arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions == null || _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Count == 0)
                return;

            // Remove the LayerDrawingOptions from the layer's LayerDrawingOptions collection
            if (_arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Contains(layerDrawingOptions))
            {
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Remove(layerDrawingOptions);

                if (refreshMap)
                    _arcGISLocalDynamicMapServiceLayer.Refresh();
            }
        }

        // Utility function: Generate a random System.Windows.Media.Color
        private Color GetRandomColor()
        {
            var colorBytes = new byte[3];
            _random.NextBytes(colorBytes);
            Color randomColor = Color.FromRgb(colorBytes[0], colorBytes[1], colorBytes[2]);
            return randomColor;
        }

        // Utility function: Generate a random value from the specified enumeration type
        public T GetRandomEnumValue<T>()
        {
            T[] values = (T[])Enum.GetValues(typeof(T));
            return values[new Random().Next(0, values.Length)];
        }

    }
}

VB.NET

Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports ESRI.ArcGIS.Client.Local
Imports ESRI.ArcGIS.Client
Imports ESRI.ArcGIS.Client.Symbols
Imports System.Linq
Imports System.ComponentModel

Namespace ArcGISWPFSDK
    Partial Public Class DynamicLayersSimpleRenderer
        Inherits UserControl
        Implements INotifyPropertyChanged

        Public Event PropertyChanged As PropertyChangedEventHandler Implements INotifyPropertyChanged.PropertyChanged

        Private _isBusy As Boolean = True

        Public Property IsBusy() As Boolean
            Get
                Return _isBusy
            End Get
            Set(value As Boolean)
                _isBusy = value

                RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs("IsBusy"))
            End Set
        End Property
        ' Member variable for the dynamic map service layer
        Private _arcGISLocalDynamicMapServiceLayer As ArcGISLocalDynamicMapServiceLayer

        ' Member variable for the random number generator to create symbol sizes, line widths, etc.
        Private _random As New Random()

        ' Member variables representing the LayerDrawingOptions definition for each layer.
        Private _citiesLayerDrawingOptions As LayerDrawingOptions
        Private _highwaysLayerDrawingOptions As LayerDrawingOptions
        Private _statesLayerDrawingOptions As LayerDrawingOptions

        Public Sub New()
            InitializeComponent()

            ' Disable the UI Grid until the ArcGISDynamicMapServiceLayer has initialized.
            DynamicLayersUiGrid.IsEnabled = False

            ' Create a new local map service from an MPK and enable the Dynamic Layers capability
            Dim localMapService As New LocalMapService() With { _
             .Path = "..\Data\DynamicLayers\USA.mpk", _
             .EnableDynamicLayers = True _
            }

            ' Start the local map service
            localMapService.StartAsync(Function(mapService)
                                           ' Once the LocalMapService has started create a new local dynamic map service layer
                                           _arcGISLocalDynamicMapServiceLayer = New ArcGISLocalDynamicMapServiceLayer(localMapService) With { _
                                            .ImageFormat = ArcGISDynamicMapServiceLayer.RestImageFormat.PNG32 _
                                           }

                                           ' Set up an event handler for the layer initialized event
                                           AddHandler _arcGISLocalDynamicMapServiceLayer.Initialized, Function(s, e)
                                                                                                          'Enable the UI once the layer has initialized
                                                                                                          DynamicLayersUiGrid.IsEnabled = True
                                                                                                          DataContext = Me
                                                                                                          IsBusy = False
                                                                                                      End Function

                                           ' Add the layer to the map
                                           _mapControl.Layers.Add(_arcGISLocalDynamicMapServiceLayer)

                                       End Function)
        End Sub

        Private Sub ChangeCitiesRendererButton_Click(sender As Object, e As RoutedEventArgs)
            ' If there is already an instance of the Cities LayerDrawOptions definition remove it from the layer's LayerDrawingOptions collection.
            If _citiesLayerDrawingOptions IsNot Nothing Then
                ResetRenderer(_citiesLayerDrawingOptions, False)
            End If

            ' Create a new Layer Drawing Options object which will define the new renderer for a specific layer in the underlying local map service
            _citiesLayerDrawingOptions = New LayerDrawingOptions()

            ' Set the ID of the map layer in the local map service
            _citiesLayerDrawingOptions.LayerID = 0

            ' Create a new simple renderer with a simple marker symbol (for feature layers of point geometry type)
            _citiesLayerDrawingOptions.Renderer = New SimpleRenderer() With { _
             .Symbol = New SimpleMarkerSymbol() With { _
              .Color = New SolidColorBrush(GetRandomColor()), _
              .Size = _random.[Next](4, 12), _
              .Style = GetRandomEnumValue(Of SimpleMarkerSymbol.SimpleMarkerStyle)() _
             } _
            }

            ' Create a new layer drawing options collection and set the layer drawing options property on the local dynamic map service layer
            If _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions Is Nothing Then
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions = New LayerDrawingOptionsCollection() From { _
                 _citiesLayerDrawingOptions _
                }
            Else
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Add(_citiesLayerDrawingOptions)
            End If

            ' Refresh the layer
            _arcGISLocalDynamicMapServiceLayer.Refresh()
        End Sub

        Private Sub ChangeHighwaysRendererButton_Click(sender As Object, e As RoutedEventArgs)
            ' If there is already an instance of the Highways LayerDrawOptions definition remove it from the layer's LayerDrawingOptions collection.
            If _highwaysLayerDrawingOptions IsNot Nothing Then
                ResetRenderer(_highwaysLayerDrawingOptions, False)
            End If

            ' Create a new Layer Drawing Options object which will define the new renderer for a specific layer in the underlying local map service
            _highwaysLayerDrawingOptions = New LayerDrawingOptions()

            ' Set the ID of the map layer in the local map service
            _highwaysLayerDrawingOptions.LayerID = 1

            ' Create a new simple renderer with a simple line symbol and set the renderer property on the layer drawing options object
            _highwaysLayerDrawingOptions.Renderer = New SimpleRenderer() With { _
             .Symbol = New SimpleLineSymbol() With { _
              .Color = New SolidColorBrush(GetRandomColor()), _
              .Width = _random.[Next](4, 12), _
              .Style = GetRandomEnumValue(Of SimpleLineSymbol.LineStyle)() _
             } _
            }

            ' Create a new layer drawing options collection and set the layer drawing options property on the local dynamic map service layer
            If _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions Is Nothing Then
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions = New LayerDrawingOptionsCollection() From { _
                 _highwaysLayerDrawingOptions _
                }
            Else
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Add(_highwaysLayerDrawingOptions)
            End If

            ' Refresh the layer
            _arcGISLocalDynamicMapServiceLayer.Refresh()
        End Sub

        Private Sub ChangeStatesRendererButton_Click(sender As Object, e As RoutedEventArgs)
            ' If there is already an instance of the States LayerDrawOptions definition remove it from the layer's LayerDrawingOptions collection.
            If _statesLayerDrawingOptions IsNot Nothing Then
                ResetRenderer(_statesLayerDrawingOptions, False)
            End If

            ' Create a new Layer Drawing Options object which will define the new renderer for a specific layer in the underlying local map service
            _statesLayerDrawingOptions = New LayerDrawingOptions()

            ' Set the ID of the map layer in the local map service
            _statesLayerDrawingOptions.LayerID = 2

            ' Create a new simple renderer with a simple fill symbol and set the renderer property on the layer drawing options object
            _statesLayerDrawingOptions.Renderer = New SimpleRenderer() With { _
             .Symbol = New SimpleFillSymbol() With { _
              .Fill = New SolidColorBrush(GetRandomColor()), _
              .BorderBrush = New SolidColorBrush(GetRandomColor()), _
              .BorderThickness = _random.[Next](1, 6) _
             } _
            }

            ' Create a new layer drawing options collection and set the layer drawing options property on the local dynamic map service layer
            If _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions Is Nothing Then
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions = New LayerDrawingOptionsCollection() From { _
                 _statesLayerDrawingOptions _
                }
            Else
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Add(_statesLayerDrawingOptions)
            End If

            ' Refresh the layer to apply the changes to the layer
            _arcGISLocalDynamicMapServiceLayer.Refresh()
        End Sub

        Private Sub ResetCitiesRendererButton_Click(sender As Object, e As RoutedEventArgs)
            ' Remove the Cities LayerDrawOptions definition from the layer's LayerDrawingOptions collection and refresh the map.
            ResetRenderer(_citiesLayerDrawingOptions, True)
        End Sub

        Private Sub ResetHighwaysRendererButton_Click(sender As Object, e As RoutedEventArgs)
            ' Remove the Highways LayerDrawOptions definition from the layer's LayerDrawingOptions collection and refresh the map.
            ResetRenderer(_highwaysLayerDrawingOptions, True)
        End Sub

        Private Sub ResetStatesRendererButton_Click(sender As Object, e As RoutedEventArgs)
            ' Remove the States LayerDrawOptions definition from the layer's LayerDrawingOptions collection and refresh the map.
            ResetRenderer(_statesLayerDrawingOptions, True)
        End Sub

        Private Sub ResetAllRenderersButton_Click(sender As Object, e As RoutedEventArgs)
            ' Exit if the layer has no LayerDrawingOptions
            If _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions Is Nothing OrElse _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Count = 0 Then
                Return
            End If

            ' Clear the LayerDrawingOptions
            _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Clear()
            _arcGISLocalDynamicMapServiceLayer.Refresh()
        End Sub

        Public Sub ResetRenderer(layerDrawingOptions As LayerDrawingOptions, refreshMap As Boolean)
            ' Exit if the layer has no LayerDrawingOptions
            If _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions Is Nothing OrElse _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Count = 0 Then
                Return
            End If

            ' Remove the LayerDrawingOptions from the layer's LayerDrawingOptions collection
            If _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Contains(layerDrawingOptions) Then
                _arcGISLocalDynamicMapServiceLayer.LayerDrawingOptions.Remove(layerDrawingOptions)

                If refreshMap Then
                    _arcGISLocalDynamicMapServiceLayer.Refresh()
                End If
            End If
        End Sub

        ' Utility function: Generate a random System.Windows.Media.Color
        Private Function GetRandomColor() As Color
            Dim colorBytes = New Byte(2) {}
            _random.NextBytes(colorBytes)
            Dim randomColor As Color = Color.FromRgb(colorBytes(0), colorBytes(1), colorBytes(2))
            Return randomColor
        End Function

        ' Utility function: Generate a random value from the specified enumeration type
        Public Function GetRandomEnumValue(Of T)() As T
            Dim values As T() = DirectCast([Enum].GetValues(GetType(T)), T())
            Return values(New Random().[Next](0, values.Length))
        End Function

    End Class
End Namespace