Aligning source code of TodoListClient in this sample with the [active-directory-dotnet-native-desktop](https://github.com/azure-samples/active-directory-dotnet-native-desktop) sample as only the App.Config should change.

- Changing the license to MIT
- Adding a label to show the signed-in user.

Author: jmprieur

TodoListClient/FileCache.cs

@@ -1,11 +1,29 @@
-using Microsoft.IdentityModel.Clients.ActiveDirectory;
-using System;
-using System.Collections.Generic;
+/*
+ The MIT License (MIT)
+
+Copyright (c) 2015 Microsoft Corporation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+using Microsoft.IdentityModel.Clients.ActiveDirectory;
 using System.IO;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Security;
 using System.Security.Cryptography;
 
 namespace TodoListClient
@@ -20,7 +38,7 @@ class FileCache : TokenCache
 
         // Initializes the cache against a local file.
         // If the file is already rpesent, it loads its content in the ADAL cache
-        public FileCache(string filePath = @".\TokenCache.dat")
+        public FileCache(string filePath=@".\TokenCache.dat")
         {
             CacheFilePath = filePath;
             this.AfterAccess = AfterAccessNotification;
@@ -40,11 +58,11 @@ public override void Clear()
 
         // Triggered right before ADAL needs to access the cache.
         // Reload the cache from the persistent store in case it changed since the last access.
-        void BeforeAccessNotification(TokenCacheNotificationArgs args)
+         void BeforeAccessNotification(TokenCacheNotificationArgs args)
         {
             lock (FileLock)
             {
-                this.Deserialize(File.Exists(CacheFilePath) ? ProtectedData.Unprotect(File.ReadAllBytes(CacheFilePath), null, DataProtectionScope.CurrentUser) : null);
+                this.Deserialize(File.Exists(CacheFilePath) ?  ProtectedData.Unprotect(File.ReadAllBytes(CacheFilePath),null,DataProtectionScope.CurrentUser) : null);
             }
         }
 
@@ -55,14 +73,14 @@ void AfterAccessNotification(TokenCacheNotificationArgs args)
             if (this.HasStateChanged)
             {
                 lock (FileLock)
-                {
+                {                    
                     // reflect changes in the persistent store
-                    File.WriteAllBytes(CacheFilePath, ProtectedData.Protect(this.Serialize(), null, DataProtectionScope.CurrentUser));
+                    File.WriteAllBytes(CacheFilePath, ProtectedData.Protect(this.Serialize(),null,DataProtectionScope.CurrentUser));
                     // once the write operation took place, restore the HasStateChanged bit to false
                     this.HasStateChanged = false;
-                }
+                }                
             }
         }
     }
 
-}
+}

TodoListClient/MainWindow.xaml

@@ -18,14 +18,16 @@
             </VisualBrush>
         </Grid.Resources>
         <StackPanel Grid.Row="0" Margin="5" VerticalAlignment="Top" Height="351">
-            <Button HorizontalAlignment="Right" Content="Sign In" Margin="0" Click="SignIn" x:Name="SignInButton" Width="80" Height="30">
-                <Button.Style>
-                    <Style TargetType="{x:Type Button}">
-                        <!-- "<Setter Property="IsEnabled" Value="False" /> -->
-                    </Style>
-                </Button.Style>
-
-            </Button>
+            <Grid HorizontalAlignment="Left" Width="346">
+                <Label HorizontalAlignment="Left" Content="Not Signed" Margin="0" x:Name="UserName" Width="261" Height="30"/>
+                <Button HorizontalAlignment="Right" Content="Sign In" Margin="0" Click="SignIn" x:Name="SignInButton" Width="80" Height="30">
+                    <Button.Style>
+                        <Style TargetType="{x:Type Button}">
+                            <!-- "<Setter Property="IsEnabled" Value="False" /> -->
+                        </Style>
+                    </Button.Style>
+                </Button>
+            </Grid>
             <GroupBox Margin="0,0,0,0" Header="Create a To Do item">
 
                 <Grid Margin="0" HorizontalAlignment="Left" Width="388" >