Dynamic Layers In Code Online

This sample demonstrates changing the rendering, changing the order of layers, and adding layers on the fly to an ArcGISDynamicMapServiceLayer. To use the sample, click on the buttons in the upper left corner of the application. In the code-behind, the ArcGISDynamicMapServiceLayer.LayerDrawingOptions and ArcGISDynamicMapServiceLayer.DynamicLayerInfos properties are used to apply the changes based on the button that was clicked. Clicking the Range Value Renderer or Unique Value Renderer button generates a renderer of the appropriate type, creates a new LayerDrawingOptions object and sets its Renderer property to the generated renderer, and then uses the LayerDrawingOptions property to apply the new renderer. Clicking the Change Layer Order button clears the layer's LayerDrawingOptions by setting it to null uses DynamicLayerInfoCollection.RemoveAt and DynamicLayerInfoCollection.Add to move a layer. Clicking the Add Layer button gets a layer using the TableDataSource and adds it to the map using the DynamicLayerInfos.

XAML

<UserControl x:Class="ArcGISWPFSDK.DynamicLayersInCode"
             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 x:Name="LayoutRoot" Background="#FFE3E3E3">
        <Grid.Resources>
            <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="MyMap">
            <esri:Map.Extent>
                <esri:Envelope XMin="-3548912" YMin="-1847469" XMax="2472012" YMax="1742990">
                    <esri:Envelope.SpatialReference>
                        <esri:SpatialReference WKID="102009"/>
                    </esri:Envelope.SpatialReference>
                </esri:Envelope>
            </esri:Map.Extent>
            <esri:ArcGISDynamicMapServiceLayer ID="USA"				
				Url="http://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer" />
        </esri:Map>
        <StackPanel Orientation="Vertical" Margin="10" HorizontalAlignment="Right" VerticalAlignment="Top">
            <Grid x:Name="DynamicLayersUiGrid" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,5,5,0">
                <Rectangle Fill="{StaticResource PanelGradient}" Stroke="Gray" Margin="0,0,0,0">
                    <Rectangle.Effect>
                        <DropShadowEffect/>
                    </Rectangle.Effect>
                </Rectangle>
                <Rectangle Margin="5" RadiusX="5" RadiusY="5" Fill="#DDFFFFFF" Stroke="DarkGray"/>
                <StackPanel Orientation="Vertical" VerticalAlignment="Top">
                    <Button Content="Range Value Renderer" Click="ApplyRangeValueClick" Width="140" Height="30" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="10,10,10,5"/>
                    <Button Content="Unique Value Renderer" Click="ApplyUniqueValueClick" Width="140" Height="30" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="10,0,10,5"/>
                    <Button Content="Change Layer Order" Click="ChangeLayerOrderClick" Width="140" Height="30" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="10,0,10,5"/>
            <Button Content="Add Layer" Click="AddLayerClick" Width="140" Height="30" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="10,0,10,10"/>
        </StackPanel>
            </Grid>
        </StackPanel>
    </Grid>
</UserControl>

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using ESRI.ArcGIS.Client;
using ESRI.ArcGIS.Client.Symbols;

namespace ArcGISWPFSDK
{
    public partial class DynamicLayersInCode : UserControl
    {
        public DynamicLayersInCode()
        {
            InitializeComponent();
        }       

        private void ApplyRangeValueClick(object sender, RoutedEventArgs e)
        {
            ClassBreaksRenderer newClassBreaksRenderer = new ClassBreaksRenderer();
            newClassBreaksRenderer.Field = "POP00_SQMI";

            newClassBreaksRenderer.Classes.Add(new ClassBreakInfo()
            {
                MinimumValue = 0,
                MaximumValue = 12,
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Color.FromArgb(255, 0, 255, 0))
                }
            });

            newClassBreaksRenderer.Classes.Add(new ClassBreakInfo()
            {
                MaximumValue = 31.3,
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Color.FromArgb(255, 100, 255, 100))
                }
            });

            newClassBreaksRenderer.Classes.Add(new ClassBreakInfo()
            {
                MaximumValue = 59.7,
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Color.FromArgb(255, 0, 255, 200))
                }
            });

            newClassBreaksRenderer.Classes.Add(new ClassBreakInfo()
            {
                MaximumValue = 146.2,
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Color.FromArgb(255, 0, 255, 255))
                }
            });

            newClassBreaksRenderer.Classes.Add(new ClassBreakInfo()
            {
                MaximumValue = 57173,
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Color.FromArgb(255, 0, 0, 255))
                }
            });

            LayerDrawingOptions layerDrawOptions = new LayerDrawingOptions();
            layerDrawOptions.LayerID = 3;
            layerDrawOptions.Renderer = newClassBreaksRenderer;

            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).LayerDrawingOptions =
                new LayerDrawingOptionsCollection() { layerDrawOptions };
            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).VisibleLayers = new int[] { 3 };
            // Changing VisibleLayers will refresh the layer, otherwise an explicit call to Refresh is needed.
            //(MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).Refresh();
        }

        private void ApplyUniqueValueClick(object sender, RoutedEventArgs e)
        {
            UniqueValueRenderer newUniqueValueRenderer = new UniqueValueRenderer()
            {
                DefaultSymbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Colors.Gray)
                },
                Field = "SUB_REGION"
            };

            newUniqueValueRenderer.Infos.Add(new UniqueValueInfo()
            {
                Value = "Pacific",
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Colors.Purple),
                    BorderBrush = new SolidColorBrush(Colors.Transparent)
                }
            });

            newUniqueValueRenderer.Infos.Add(new UniqueValueInfo()
            {
                Value = "W N Cen",
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Colors.Green),
                    BorderBrush = new SolidColorBrush(Colors.Transparent)
                }
            });

            newUniqueValueRenderer.Infos.Add(new UniqueValueInfo()
            {
                Value = "W S Cen",
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Colors.Cyan),
                    BorderBrush = new SolidColorBrush(Colors.Transparent)
                }
            });

            newUniqueValueRenderer.Infos.Add(new UniqueValueInfo()
            {
                Value = "E N Cen",
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Colors.Yellow),
                    BorderBrush = new SolidColorBrush(Colors.Transparent)
                }
            });

            newUniqueValueRenderer.Infos.Add(new UniqueValueInfo()
            {
                Value = "Mtn",
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Colors.Blue),
                    BorderBrush = new SolidColorBrush(Colors.Transparent)
                }
            });

            newUniqueValueRenderer.Infos.Add(new UniqueValueInfo()
            {
                Value = "N Eng",
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Colors.Red),
                    BorderBrush = new SolidColorBrush(Colors.Transparent)
                }
            });

            newUniqueValueRenderer.Infos.Add(new UniqueValueInfo()
            {
                Value = "E S Cen",
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Colors.Brown),
                    BorderBrush = new SolidColorBrush(Colors.Transparent)
                }
            });

            newUniqueValueRenderer.Infos.Add(new UniqueValueInfo()
            {
                Value = "Mid Atl",
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Colors.Magenta),
                    BorderBrush = new SolidColorBrush(Colors.Transparent)
                }
            });

            newUniqueValueRenderer.Infos.Add(new UniqueValueInfo()
            {
                Value = "S Atl",
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Colors.Orange),
                    BorderBrush = new SolidColorBrush(Colors.Transparent)
                }
            });

            LayerDrawingOptions layerDrawOptions = new LayerDrawingOptions();
            layerDrawOptions.LayerID = 2;
            layerDrawOptions.Renderer = newUniqueValueRenderer;

            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).LayerDrawingOptions =
                new LayerDrawingOptionsCollection() { layerDrawOptions };
            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).VisibleLayers = new int[] { 2 };
            // Changing VisibleLayers will refresh the layer, otherwise an explicit call to Refresh is needed.
            //(MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).Refresh();

        }

        private void ChangeLayerOrderClick(object sender, RoutedEventArgs e)
        {
            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).LayerDrawingOptions = null;

            DynamicLayerInfoCollection myDynamicLayerInfos = (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).DynamicLayerInfos;
            if (myDynamicLayerInfos == null)
                myDynamicLayerInfos = (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).CreateDynamicLayerInfosFromLayerInfos();

            var aDynamicLayerInfo = myDynamicLayerInfos[0];
            myDynamicLayerInfos.RemoveAt(0);
            myDynamicLayerInfos.Add(aDynamicLayerInfo);

            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).DynamicLayerInfos = myDynamicLayerInfos;
            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).VisibleLayers = null;
            // Changing VisibleLayers will refresh the layer, otherwise an explicit call to Refresh is needed.
            //(MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).Refresh();
        }

        private void AddLayerClick(object sender, RoutedEventArgs e)
        {
            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).LayerDrawingOptions = null;

            DynamicLayerInfoCollection myDynamicLayerInfos = (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).DynamicLayerInfos;
            if (myDynamicLayerInfos == null)
                myDynamicLayerInfos = (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).CreateDynamicLayerInfosFromLayerInfos();

            DynamicLayerInfo dli = new DynamicLayerInfo()
            {
                ID = 4,
                Source = new LayerDataSource()
                {
                    DataSource = new TableDataSource()
                    {
                        WorkspaceID = "MyDatabaseWorkspaceIDSSR2",
                        DataSourceName = "ss6.gdb.Lakes"
                    }
                }
            };

            LayerDrawingOptions layerDrawOptions = new LayerDrawingOptions();
            layerDrawOptions.LayerID = 4;
            layerDrawOptions.Renderer = new SimpleRenderer()
            {
                Symbol = new SimpleFillSymbol()
                {
                    Fill = new SolidColorBrush(Color.FromArgb((int)255, (int)0, (int)0, (int)255))
                }
            };

            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).LayerDrawingOptions =
                new LayerDrawingOptionsCollection() { layerDrawOptions };

            myDynamicLayerInfos.Insert(0, dli);
            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).DynamicLayerInfos = myDynamicLayerInfos;
            (MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).VisibleLayers = new int[] { 3,4 };
            // Changing VisibleLayers will refresh the layer, otherwise an explicit call to Refresh is needed.
            //(MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).Refresh();
        }
    }
}

VB.NET

Imports System.Collections.Generic
Imports System.Linq
Imports System.Net
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Documents
Imports System.Windows.Input
Imports System.Windows.Media
Imports System.Windows.Media.Animation
Imports System.Windows.Shapes
Imports ESRI.ArcGIS.Client
Imports ESRI.ArcGIS.Client.Symbols
Namespace ArcGISWPFSDK
    Partial Public Class DynamicLayersInCode
        Inherits UserControl
        Public Sub New()
            InitializeComponent()
        End Sub

        Private Sub ApplyRangeValueClick(sender As Object, e As RoutedEventArgs)
            Dim newClassBreaksRenderer As New ClassBreaksRenderer()
            newClassBreaksRenderer.Field = "POP00_SQMI"

            newClassBreaksRenderer.Classes.Add(New ClassBreakInfo() With
             {
             .MinimumValue = 0,
             .MaximumValue = 12,
             .Symbol = New SimpleFillSymbol() With
             {.Fill = New SolidColorBrush(Color.FromArgb(255, 0, 255, 0))}
            })

            newClassBreaksRenderer.Classes.Add(New ClassBreakInfo() With
             {
             .MaximumValue = 31.3,
             .Symbol = New SimpleFillSymbol() With
             {.Fill = New SolidColorBrush(Color.FromArgb(255, 100, 255, 100))}
             })

            newClassBreaksRenderer.Classes.Add(New ClassBreakInfo() With
             {
             .MaximumValue = 59.7,
             .Symbol = New SimpleFillSymbol() With
             {.Fill = New SolidColorBrush(Color.FromArgb(255, 0, 255, 200))}
             })

            newClassBreaksRenderer.Classes.Add(New ClassBreakInfo() With
             {
             .MaximumValue = 146.2,
             .Symbol = New SimpleFillSymbol() With
             {.Fill = New SolidColorBrush(Color.FromArgb(255, 0, 255, 255))}
             })

            newClassBreaksRenderer.Classes.Add(New ClassBreakInfo() With
             {
             .MaximumValue = 57173,
             .Symbol = New SimpleFillSymbol() With
             {.Fill = New SolidColorBrush(Color.FromArgb(255, 0, 0, 255))}
             })

            Dim layerDrawOptions As New LayerDrawingOptions()
            layerDrawOptions.LayerID = 3
            layerDrawOptions.Renderer = newClassBreaksRenderer

            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).LayerDrawingOptions = New LayerDrawingOptionsCollection() From {layerDrawOptions}
            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).VisibleLayers = New Integer() {3}
            ' Changing VisibleLayers will refresh the layer, otherwise an explicit call to Refresh is needed.
            '(MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).Refresh();
        End Sub

        Private Sub ApplyUniqueValueClick(ByVal sender As Object, ByVal e As RoutedEventArgs)
            Dim newUniqueValueRenderer As New UniqueValueRenderer() With
             {
             .DefaultSymbol = New SimpleFillSymbol() With {.Fill = New SolidColorBrush(Colors.Gray)},
             .Field = "SUB_REGION"
             }

            newUniqueValueRenderer.Infos.Add(New UniqueValueInfo() With
            {
             .Value = "Pacific",
             .Symbol = New SimpleFillSymbol() With
             {
             .Fill = New SolidColorBrush(Colors.Purple),
             .BorderBrush = New SolidColorBrush(Colors.Transparent)
             }
             })

            newUniqueValueRenderer.Infos.Add(New UniqueValueInfo() With
            {
             .Value = "W N Cen",
             .Symbol = New SimpleFillSymbol() With
             {
             .Fill = New SolidColorBrush(Colors.Green),
             .BorderBrush = New SolidColorBrush(Colors.Transparent)
             }
            })

            newUniqueValueRenderer.Infos.Add(New UniqueValueInfo() With
            {
             .Value = "W S Cen",
             .Symbol = New SimpleFillSymbol() With
             {
             .Fill = New SolidColorBrush(Colors.Cyan),
             .BorderBrush = New SolidColorBrush(Colors.Transparent)
             }
            })

            newUniqueValueRenderer.Infos.Add(New UniqueValueInfo() With
            {
             .Value = "E N Cen",
             .Symbol = New SimpleFillSymbol() With
             {
             .Fill = New SolidColorBrush(Colors.Yellow),
             .BorderBrush = New SolidColorBrush(Colors.Transparent)
             }
            })

            newUniqueValueRenderer.Infos.Add(New UniqueValueInfo() With
            {
             .Value = "Mtn",
             .Symbol = New SimpleFillSymbol() With
             {
             .Fill = New SolidColorBrush(Colors.Blue),
             .BorderBrush = New SolidColorBrush(Colors.Transparent)
             }
            })

            newUniqueValueRenderer.Infos.Add(New UniqueValueInfo() With
            {
             .Value = "N Eng",
             .Symbol = New SimpleFillSymbol() With
             {
             .Fill = New SolidColorBrush(Colors.Red),
             .BorderBrush = New SolidColorBrush(Colors.Transparent)
             }
            })

            newUniqueValueRenderer.Infos.Add(New UniqueValueInfo() With
            {
             .Value = "E S Cen",
             .Symbol = New SimpleFillSymbol() With
             {
             .Fill = New SolidColorBrush(Colors.Brown),
             .BorderBrush = New SolidColorBrush(Colors.Transparent)
             }
            })

            newUniqueValueRenderer.Infos.Add(New UniqueValueInfo() With
            {
            .Value = "Mid Atl",
            .Symbol = New SimpleFillSymbol() With
             {
             .Fill = New SolidColorBrush(Colors.Magenta),
             .BorderBrush = New SolidColorBrush(Colors.Transparent)
             }
            })

            newUniqueValueRenderer.Infos.Add(New UniqueValueInfo() With
            {
             .Value = "S Atl",
             .Symbol = New SimpleFillSymbol() With
             {
             .Fill = New SolidColorBrush(Colors.Orange),
             .BorderBrush = New SolidColorBrush(Colors.Transparent)
             }
            })

            Dim layerDrawOptions As New LayerDrawingOptions()
            layerDrawOptions.LayerID = 2
            layerDrawOptions.Renderer = newUniqueValueRenderer

            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).LayerDrawingOptions = New LayerDrawingOptionsCollection() From {layerDrawOptions}
            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).VisibleLayers = New Integer() {2}
            ' Changing VisibleLayers will refresh the layer, otherwise an explicit call to Refresh is needed.
            '(MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).Refresh();

        End Sub

        Private Sub ChangeLayerOrderClick(ByVal sender As Object, ByVal e As RoutedEventArgs)
            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).LayerDrawingOptions = Nothing

            Dim myDynamicLayerInfos As DynamicLayerInfoCollection = (TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer)).DynamicLayerInfos
            If myDynamicLayerInfos Is Nothing Then
                myDynamicLayerInfos = (TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer)).CreateDynamicLayerInfosFromLayerInfos()
            End If

            Dim aDynamicLayerInfo = myDynamicLayerInfos(0)
            myDynamicLayerInfos.RemoveAt(0)
            myDynamicLayerInfos.Add(aDynamicLayerInfo)

            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).DynamicLayerInfos = myDynamicLayerInfos
            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).VisibleLayers = Nothing
            ' Changing VisibleLayers will refresh the layer, otherwise an explicit call to Refresh is needed.
            '(MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).Refresh();
        End Sub

        Private Sub AddLayerClick(ByVal sender As Object, ByVal e As RoutedEventArgs)
            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).LayerDrawingOptions = Nothing

            Dim myDynamicLayerInfos As DynamicLayerInfoCollection = (TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer)).DynamicLayerInfos
            If myDynamicLayerInfos Is Nothing Then
                myDynamicLayerInfos = (TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer)).CreateDynamicLayerInfosFromLayerInfos()
            End If

            Dim dli As New DynamicLayerInfo() With
             {
             .ID = 4,
             .Source = New LayerDataSource() With
             {
             .DataSource = New TableDataSource() With
             {
             .WorkspaceID = "MyDatabaseWorkspaceIDSSR2",
             .DataSourceName = "ss6.gdb.Lakes"
             }
             }
            }

            Dim layerDrawOptions As New LayerDrawingOptions()
            layerDrawOptions.LayerID = 4
            layerDrawOptions.Renderer = New SimpleRenderer() With
                {
                .Symbol = New SimpleFillSymbol() With
                 {
                  .Fill = New SolidColorBrush(Color.FromArgb(CInt(255), CInt(0), CInt(0), CInt(255)))
                 }
                }

            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).LayerDrawingOptions = New LayerDrawingOptionsCollection() From {layerDrawOptions}

            myDynamicLayerInfos.Insert(0, dli)
            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).DynamicLayerInfos = myDynamicLayerInfos
            TryCast(MyMap.Layers("USA"), ArcGISDynamicMapServiceLayer).VisibleLayers = New Integer() {3, 4}
            ' Changing VisibleLayers will refresh the layer, otherwise an explicit call to Refresh is needed.
            '(MyMap.Layers["USA"] as ArcGISDynamicMapServiceLayer).Refresh();
        End Sub
    End Class
End Namespace