Load WebMap with Proxy

This sample demonstrates adding data in a WebMap document housed via ArcGIS Online (http://www.arcgis.com) in a WPF application. The WebMap.GetMapAsync Method call takes a Globally Unique Identifier (GUID) for the WebMap service provided by ArcGIS Online to obtain the geographic data layers. The WebMap’s GetMapCompletedEventArgs.Map Property is used to add a Map Class to the WPF application for visual display. The sample uses the ProxyUrl Property to demonstrate how a proxy service brokers web requests between the WPF client and the ArcGIS Online service that exposes a WebMap document. Use a proxy service when the WebMap document is not hosted on a site that provides a cross domain policy file (clientaccesspolicy.xml or crossdomain.xml).

XAML

<UserControl x:Class="ArcGISWPFSDK.LoadWebMapWithProxy"
    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>
</UserControl>

C#

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

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

            Document webMap = new Document();
            webMap.ProxyUrl = "http://serverapps.esri.com/SilverlightDemos/ProxyPage/proxy.ashx";
            webMap.GetMapCompleted += webMap_GetMapCompleted;

            webMap.GetMapAsync("07cbed6b51474885b420cd5ed4c3e082");
        }

        void webMap_GetMapCompleted(object sender, GetMapCompletedEventArgs e)
        {
            if (e.Error == null)
                LayoutRoot.Children.Add(e.Map);
        }
    }
}

VB.NET

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

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

            Dim webMap As New Document()
            webMap.ProxyUrl = "http://serverapps.esri.com/SilverlightDemos/ProxyPage/proxy.ashx"
            AddHandler webMap.GetMapCompleted, AddressOf webMap_GetMapCompleted

            webMap.GetMapAsync("07cbed6b51474885b420cd5ed4c3e082")
        End Sub

        Private Sub webMap_GetMapCompleted(sender As Object, e As GetMapCompletedEventArgs)
            If e.[Error] Is Nothing Then
                LayoutRoot.Children.Add(e.Map)
            End If
        End Sub
    End Class
End Namespace