Editor Tracking Online

This sample demonstrates tracking the identity of users who make edits (adds, updates) to a feature class. IdentityManager is used to prompt the user to log in. IdentityManager sets the FeatureLayer.EditUserName which is used to tell the service who is editing the features. To use the sample enter one of the username and password below: username=user1, password=user1 or username=user2, password=user2. Use the tools to add new features, select features, and delete features. Update features using the FeatureDataGrid.

XAML

<UserControl x:Class="ArcGISWPFSDK.EditorTracking"
     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>
                <esri:Editor x:Key="MyEditor"
                         GeometryServiceUrl="http://tasks.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer"
                         ContinuousMode="True" />
            </Grid.Resources>
            <Grid.RowDefinitions>
                <RowDefinition Height="*" />
                <RowDefinition Height="5" />
                <RowDefinition Height="150" />
            </Grid.RowDefinitions>
            <esri:Map Name="MyMap"
                  Extent="-13724204.479703,5317475.93669291,-13400488.4812798,5450378.64389627"
                  WrapAround="True">
                <esri:ArcGISTiledMapServiceLayer ID="Street Map"
                                             Url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer" />
                <esri:FeatureLayer ID="WildfireLayer"
                               DisplayName="Wildfire Layer"
                               Url="http://sampleserver6.arcgisonline.com/arcgis/rest/services/Wildfire_secure/FeatureServer/0"
                               MouseLeftButtonDown="FeatureLayer_MouseLeftButtonDown"
                               InitializationFailed="FeatureLayer_InitializationFailed"
                               OutFields="description,eventdate,eventtype,created_user,created_date,last_edited_user,last_edited_date"
                               Mode="OnDemand" />
            </esri:Map>
            <Grid Name="LoggedInGrid"
              HorizontalAlignment="Right"
              VerticalAlignment="Top"
              Margin="0,15,15,0"
              Visibility="Collapsed">
                <Rectangle Stroke="Gray"
                       RadiusX="10"
                       RadiusY="10"
                       Fill="LightGray"
                       Margin="-10">
                    <Rectangle.Effect>
                        <DropShadowEffect />
                    </Rectangle.Effect>
                </Rectangle>
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition />
                        <ColumnDefinition />
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition />
                        <RowDefinition />
                        <RowDefinition />
                    </Grid.RowDefinitions>
                    <TextBlock Grid.Row="0"
                           Grid.ColumnSpan="2"
                           Text="{Binding ElementName=MyMap,Path=Layers[WildfireLayer].DisplayName}" />
                    <TextBlock Text="Logged in as:"
                           Grid.Column="0"
                           Grid.Row="1"
                           Margin="2"
                           VerticalAlignment="Center" />
                    <TextBlock Name="LoggedInUserTextBlock"                              
                           FontWeight="Bold"
                           HorizontalAlignment="Left"
                           Margin="2"
                           Grid.Column="1"
                           Grid.Row="1"
                           TextAlignment="Left" />
                    <Button Name="ChangeUserButton"
                        Content="Sign Out"
                        Width="140"
                        Margin="0,5,0,5"
                        HorizontalAlignment="Center"
                        Grid.Row="2"
                        Grid.ColumnSpan="2"
                        Click="SignOut_Click" />
                </Grid>
            </Grid>
            <Border Name="ToolBorder"
                Background="LightGray"
                Visibility="Collapsed"
                BorderThickness="1"
                CornerRadius="5"
                HorizontalAlignment="Left"
                VerticalAlignment="Top"
                Padding="5"
                BorderBrush="Black"
                Margin="5">
                <Border.Effect>
                    <DropShadowEffect />
                </Border.Effect>
                <StackPanel Orientation="Vertical">
                    <esri:TemplatePicker Map="{Binding ElementName=MyMap, Mode=OneWay}"
                                     LayerIDs="WildfireLayer" />
                    <StackPanel DataContext="{StaticResource MyEditor}"
                            Orientation="Vertical">
                        <StackPanel Orientation="Horizontal">
                            <Button Command="{Binding ClearSelection}"
                                Margin="2">
                                <TextBlock>Clear<LineBreak />Selection</TextBlock>
                            </Button>
                            <Button Command="{Binding DeleteSelected}"
                                Margin="2">
                                <TextBlock>Delete<LineBreak />Selected</TextBlock>
                            </Button>
                        </StackPanel>
                    </StackPanel>
                </StackPanel>
            </Border>   
            <esri:FeatureDataGrid Grid.Row="2"
                              x:Name="MyDataGrid"
                              Map="{Binding ElementName=MyMap}"
                              SelectionMode="Single"
                              GraphicsLayer="{Binding ElementName=MyMap, Path=Layers.[WildfireLayer]}" />
        </Grid>
</UserControl>

C#

using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using ESRI.ArcGIS.Client;
using ESRI.ArcGIS.Client.Geometry;
using ESRI.ArcGIS.Client.Toolkit;


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

            ESRI.ArcGIS.Client.Editor myEditor = LayoutRoot.Resources["MyEditor"] as ESRI.ArcGIS.Client.Editor;
            myEditor.Map = MyMap;

            IdentityManager.Current.ChallengeMethod = Challenge;
        }

        private void Challenge(string url,
            Action<IdentityManager.Credential, Exception> callback, IdentityManager.GenerateTokenOptions options)
        {
            SignInDialog.DoSignIn(url, (credential, error) =>
            {
                if (error == null)
                {
                    ToolBorder.Visibility = System.Windows.Visibility.Visible;
                    LoggedInGrid.Visibility = System.Windows.Visibility.Visible;
                    LoggedInUserTextBlock.Text = credential.UserName;
                }
                callback(credential, error);
            }
            , options);
        }

        private void FeatureLayer_InitializationFailed(object sender, EventArgs e)
        { }

        private void SignOut_Click(object sender, RoutedEventArgs e)
        {
            SignOut();
        }

        private void SignOut()
        {
           var featureLayer = MyMap.Layers["WildfireLayer"] as FeatureLayer;
            var credential = IdentityManager.Current.FindCredential(featureLayer.Url, LoggedInUserTextBlock.Text);
            if (credential == null) return;
            ToolBorder.Visibility = System.Windows.Visibility.Collapsed;
            LoggedInGrid.Visibility = System.Windows.Visibility.Collapsed;
            IdentityManager.Current.RemoveCredential(credential);
            MyMap.Layers.Remove(featureLayer);
            featureLayer = new FeatureLayer()
            {
                ID = "WildfireLayer",
                DisplayName = "Wildfire Layer",
                Url = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/Wildfire_secure/FeatureServer/0",
                Mode = FeatureLayer.QueryMode.OnDemand
            };
            featureLayer.OutFields.Add("*");
            featureLayer.MouseLeftButtonDown += FeatureLayer_MouseLeftButtonDown;
            featureLayer.InitializationFailed += FeatureLayer_InitializationFailed;
            MyMap.Layers.Add(featureLayer);
        }

        private void FeatureLayer_MouseLeftButtonDown(object sender, GraphicMouseButtonEventArgs e)
        {

            if (e.Graphic != null && !e.Graphic.Selected && (sender as FeatureLayer).IsUpdateAllowed(e.Graphic))
            {
                Editor editor = LayoutRoot.Resources["MyEditor"] as Editor;
                if ((sender as FeatureLayer).IsUpdateAllowed(e.Graphic))
                {
                    if (editor.EditVertices.CanExecute(null))
                        editor.EditVertices.Execute(null);
                }
                else
                    if (editor.CancelActive.CanExecute(null))
                        editor.CancelActive.Execute(null);
            }
            (sender as FeatureLayer).ClearSelection();
            e.Graphic.Select();
            MyDataGrid.ScrollIntoView(e.Graphic, null);
        }
    }
}

VB.NET

Imports System
Imports System.Collections.Generic
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports ESRI.ArcGIS.Client
Imports ESRI.ArcGIS.Client.Geometry
Imports ESRI.ArcGIS.Client.Toolkit

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

            Dim myEditor As ESRI.ArcGIS.Client.Editor = TryCast(LayoutRoot.Resources("MyEditor"), ESRI.ArcGIS.Client.Editor)
            myEditor.Map = MyMap

            IdentityManager.Current.ChallengeMethod = AddressOf Challenge
        End Sub

        Private Sub Challenge(url As String, callback As Action(Of IdentityManager.Credential, Exception), options As IdentityManager.GenerateTokenOptions)
            SignInDialog.DoSignIn(url, Function(credential, [error])
                                                    If [error] Is Nothing Then
                                                        ToolBorder.Visibility = System.Windows.Visibility.Visible
                                                        LoggedInGrid.Visibility = System.Windows.Visibility.Visible
                                                        LoggedInUserTextBlock.Text = credential.UserName
                                                    End If
                                                    callback(credential, [error])

                                                End Function, options)
        End Sub

        Private Sub FeatureLayer_InitializationFailed(sender As Object, e As EventArgs)
        End Sub

        Private Sub SignOut_Click(sender As Object, e As RoutedEventArgs)
            SignOut()
        End Sub

        Private Sub SignOut()
            Dim featureLayer = TryCast(MyMap.Layers("WildfireLayer"), FeatureLayer)
            Dim credential = IdentityManager.Current.FindCredential(featureLayer.Url, LoggedInUserTextBlock.Text)
            If credential Is Nothing Then
                Return
            End If
            ToolBorder.Visibility = System.Windows.Visibility.Collapsed
            LoggedInGrid.Visibility = System.Windows.Visibility.Collapsed
            IdentityManager.Current.RemoveCredential(credential)
            MyMap.Layers.Remove(featureLayer)
            featureLayer = New FeatureLayer() With { _
            .ID = "WildfireLayer", _
                 .DisplayName = "Wildfire Layer", _
                 .Url = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/Wildfire_secure/FeatureServer/0", _
                .Mode = featureLayer.QueryMode.OnDemand _
            }
            featureLayer.OutFields.Add("*")

            MyMap.Layers.Add(featureLayer)
        End Sub

        Private Sub FeatureLayer_MouseLeftButtonDown(sender As Object, e As GraphicMouseButtonEventArgs)

            If e.Graphic IsNot Nothing AndAlso Not e.Graphic.Selected AndAlso TryCast(sender, FeatureLayer).IsUpdateAllowed(e.Graphic) Then
                Dim editor As Editor = TryCast(LayoutRoot.Resources("MyEditor"), Editor)
                If TryCast(sender, FeatureLayer).IsUpdateAllowed(e.Graphic) Then
                    If editor.EditVertices.CanExecute(Nothing) Then
                        editor.EditVertices.Execute(Nothing)
                    End If
                ElseIf editor.CancelActive.CanExecute(Nothing) Then
                    editor.CancelActive.Execute(Nothing)
                End If
            End If
            TryCast(sender, FeatureLayer).ClearSelection()
            e.Graphic.[Select]()
            MyDataGrid.ScrollIntoView(e.Graphic, Nothing)
        End Sub
    End Class
End Namespace