Legend

This sample demonstrates the Legend control. The Legend control displays the symbology of specified Layers with text explanations of what the symbols mean in a Map an organized in a tree view hierarchy. The specific Layers that are displayed in the Legend control are controlled by what is specified in the LayersIDs Property.

For this sample, the LayerItemsMode Property is set to Tree meaning all sub-layers and groups will automatically be displayed in the Legend control. Users are free to collapse the symbology with text descriptions of the Legend for individual layers and sub-layers.

XAML

<UserControl x:Class="ArcGISWPFSDK.LocalLegendSimple"
 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" >
        <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="MyMap" Extent="-15000000,2000000,-7000000,8000000" WrapAround="True" MinimumResolution="2445.98490512499">
            <esri:ArcGISLocalTiledLayer ID="myBaseMap" Path="..\\Data\\TPKs\\Topographic.tpk"/>
            <esri:ArcGISLocalDynamicMapServiceLayer ID="USA" Path="..\\Data\\MPKS\\USCitiesStates.mpk"/>
        </esri:Map>
        <Border Background="{StaticResource PanelGradient}" BorderThickness="1" CornerRadius="5"
            HorizontalAlignment="Right"  VerticalAlignment="Top"
            Margin="20" Padding="5" BorderBrush="Black" >
            <esri:Legend Map="{Binding ElementName=MyMap}" 
                         LayerIDs="USA"
                         LayerItemsMode="Tree" />
        </Border>
        <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.Windows.Controls;
using System.ComponentModel;

namespace ArcGISWPFSDK
{
    public partial class LocalLegendSimple : 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"));
                }
            }
        } 
            
        public LocalLegendSimple()
        {
            InitializeComponent();

            DataContext = this;

            MyMap.Layers.LayersInitialized += (o, evt) =>
            {
                IsBusy = false;

            };
        }
    }
}

VB.NET

Imports System.Windows.Controls
Imports System.ComponentModel


Namespace ArcGISWPFSDK
    Partial Public Class LocalLegendSimple
        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
        Public Sub New()
            InitializeComponent()
            AddHandler MyMap.Layers.LayersInitialized, AddressOf map_LayersInitialized
        End Sub
        Private Sub map_LayersInitialized(sender As Object, e As EventArgs)
            DataContext = Me
            IsBusy = False
        End Sub
    End Class
End Namespace