Add Layer Dynamically

This sample demonstrates how to add an ArcGISLocalTiledLayer dynamically. This sample includes a Map with no layers. Enter the path to an ArcGIS Local Tile package (.tpk) and click the Add Layer button to add the local tiled layer to the map. The map will also zoom to the initial extent of the layer.

XAML

<UserControl x:Class="ArcGISWPFSDK.LocalAddLayerDynamically"
    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="White">
        <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" ExtentChanged="MyMap_ExtentChange" ExtentChanging="MyMap_ExtentChange" WrapAround="True" Background="#FFE3E3E3"/>
        <Grid HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,15,15,0" Height="118"  >
            <Rectangle Fill="{StaticResource PanelGradient}" Stroke="Gray"  RadiusX="10" RadiusY="10" Margin="0,0,0,5">
                <Rectangle.Effect>
                    <DropShadowEffect/>
                </Rectangle.Effect>
            </Rectangle>
            <Rectangle Fill="#DDFFFFFF" Stroke="DarkGray" RadiusX="5" RadiusY="5" Margin="10,10,10,15" />
            <StackPanel Orientation="Vertical" HorizontalAlignment="Center" Margin="0,20,30,30">
                <TextBlock Foreground="Black" FontWeight="Bold" HorizontalAlignment="Center" Text="Enter path to Tile Package." />
                <StackPanel Orientation="Horizontal" HorizontalAlignment="Left" >
                    <TextBlock Text="Path: " Width="80" TextAlignment="Right" VerticalAlignment="Center" Foreground="Black"/>
                    <TextBox x:Name="UrlTextBox" Text="..\\Data\\TPKs\\Topographic.tpk" Width="550"/>
                </StackPanel>
                <Button x:Name="AddLayerButton" Content="Add Layer" Width="100" Margin="0,5,0,0" HorizontalAlignment="Center" Click="AddLayerButton_Click" />
            </StackPanel>
        </Grid>
        <Grid x:Name="ExtentGrid" HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="10" Visibility="Collapsed" >
            <Rectangle Fill="{StaticResource PanelGradient}" Stroke="Gray"  RadiusX="10" RadiusY="10" Margin="0" >
                <Rectangle.Effect>
                    <DropShadowEffect/>
                </Rectangle.Effect>
            </Rectangle>
            <StackPanel Orientation="Vertical" Margin="10">
                <TextBlock x:Name="ExtentTextBlock" Text="Extent: " Margin="5" TextWrapping="Wrap" FontWeight="Bold" Foreground="White"  />
                <TextBox x:Name="ExtentTextBox" IsReadOnly="True" Margin="5" />
            </StackPanel>
        </Grid>
    </Grid>
</UserControl>

C#

using System.Windows;
using System.Windows.Controls;
using ESRI.ArcGIS.Client.Local;
using ESRI.ArcGIS.Client;

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

        private void AddLayerButton_Click(object sender, RoutedEventArgs e)
        {
            MyMap.Layers.Clear();

            ArcGISLocalTiledLayer NewTiledLayer = new ArcGISLocalTiledLayer();

            NewTiledLayer.Path = UrlTextBox.Text;
            MyMap.Layers.Add(NewTiledLayer);
        }

        void MyMap_ExtentChange(object sender, ESRI.ArcGIS.Client.ExtentEventArgs args)
        {
            setExtentText(args.NewExtent);
        }

        private void setExtentText(ESRI.ArcGIS.Client.Geometry.Envelope newExtent)
        {
            ExtentTextBlock.Text = string.Format("MinX: {0}\nMinY: {1}\nMaxX: {2}\nMaxY: {3}",
                newExtent.XMin, newExtent.YMin, newExtent.XMax, newExtent.YMax);
            ExtentGrid.Visibility = Visibility.Visible;
            ExtentTextBox.Text = string.Format("{0},{1},{2},{3}", newExtent.XMin.ToString("#0.000"), newExtent.YMin.ToString("#0.000"),
                newExtent.XMax.ToString("#0.000"), newExtent.YMax.ToString("#0.000"));
        }
    }
}

VB.NET

Imports System.Windows
Imports System.Windows.Controls
Imports ESRI.ArcGIS.Client.Local
Imports ESRI.ArcGIS.Client

Namespace ArcGISWPFSDK
    Partial Public Class LocalAddLayerDynamically
        Inherits UserControl
        Public Sub New()
            InitializeComponent()
        End Sub

        Private Sub AddLayerButton_Click(sender As Object, e As RoutedEventArgs)
            MyMap.Layers.Clear()

            Dim NewTiledLayer As New ArcGISLocalTiledLayer()

            NewTiledLayer.Path = UrlTextBox.Text
            MyMap.Layers.Add(NewTiledLayer)
        End Sub

        Private Sub MyMap_ExtentChange(sender As Object, args As ESRI.ArcGIS.Client.ExtentEventArgs)
            setExtentText(args.NewExtent)
        End Sub

        Private Sub setExtentText(newExtent As ESRI.ArcGIS.Client.Geometry.Envelope)
            ExtentTextBlock.Text = String.Format("MinX: {0}" & vbLf & "MinY: {1}" & vbLf & "MaxX: {2}" & vbLf & "MaxY: {3}", newExtent.XMin, newExtent.YMin, newExtent.XMax, newExtent.YMax)
            ExtentGrid.Visibility = Visibility.Visible
            ExtentTextBox.Text = String.Format("{0},{1},{2},{3}", newExtent.XMin.ToString("#0.000"), newExtent.YMin.ToString("#0.000"), newExtent.XMax.ToString("#0.000"), newExtent.YMax.ToString("#0.000"))
        End Sub
    End Class
End Namespace