updated code snippets

Author: tomvcassidy

articles/service-fabric/service-fabric-connect-to-secure-cluster.md

@@ -235,23 +235,27 @@ catch (Exception e)
 
 ### Connect to a secure cluster non-interactively using Azure Active Directory
 
-The following example relies on Microsoft.IdentityModel.Clients.ActiveDirectory, Version: 2.19.208020213.
-
-> [!IMPORTANT]
-> The [Microsoft.IdentityModel.Clients.ActiveDirectory](https://www.nuget.org/packages/Microsoft.IdentityModel.Clients.ActiveDirectory) NuGet package and Azure AD Authentication Library (ADAL) have been deprecated. No new features have been added since June 30, 2020.   We strongly encourage you to upgrade, see the [migration guide](../active-directory/develop/msal-migration.md) for more details.
+The following example relies on Microsoft.Identity.Client, Version: 4.37.0.
 
 For more information on AAD token acquisition, see [Microsoft.Identity.Client](/dotnet/api/microsoft.identity.client?view=azure-dotnet&preserve-view=true).
 
 ```csharp
 string tenantId = "C15CFCEA-02C1-40DC-8466-FBD0EE0B05D2";
 string clientApplicationId = "118473C2-7619-46E3-A8E4-6DA8D5F56E12";
 string webApplicationId = "53E6948C-0897-4DA6-B26A-EE2A38A690B4";
+string[] scopes = new string[] { "user.read" };
+
+var pca = PublicClientApplicationBuilder.Create(clientApplicationId)
+    .WithAuthority($"https://login.microsoftonline.com/{tenantId}")
+    .WithRedirectUri("urn:ietf:wg:oauth:2.0:oob")
+    .Build();
 
-string token = GetAccessToken(
-    tenantId,
-    webApplicationId,
-    clientApplicationId,
-    "urn:ietf:wg:oauth:2.0:oob");
+var accounts = await pca.GetAccountsAsync();
+var result = await pca.AcquireTokenInteractive(scopes)
+    .WithAccount(accounts.FirstOrDefault())
+    .ExecuteAsync();
+
+string token = result.AccessToken;
 
 string serverCertThumb = "A8136758F4AB8962AF2BF3F27921BE1DF67F4326";
 string connection = "clustername.westus.cloudapp.azure.com:19000";
@@ -271,26 +275,6 @@ catch (Exception e)
 {
     Console.WriteLine("Connect failed: {0}", e.Message);
 }
-
-...
-
-static string GetAccessToken(
-    string tenantId,
-    string resource,
-    string clientId,
-    string redirectUri)
-{
-    string authorityFormat = @"https://login.microsoftonline.com/{0}";
-    string authority = string.Format(CultureInfo.InvariantCulture, authorityFormat, tenantId);
-    var authContext = new AuthenticationContext(authority);
-
-    var authResult = authContext.AcquireToken(
-        resource,
-        clientId,
-        new UserCredential("[email protected]", "TestPassword"));
-    return authResult.AccessToken;
-}
-
 ```
 
 ### Connect to a secure cluster without prior metadata knowledge using Azure Active Directory
@@ -306,9 +290,25 @@ claimsCredentials.ServerThumbprints.Add(serverCertThumb);
 
 var fc = new FabricClient(claimsCredentials, connection);
 
-fc.ClaimsRetrieval += (o, e) =>
+fc.ClaimsRetrieval += async (o, e) =>
 {
-    return GetAccessToken(e.AzureActiveDirectoryMetadata);
+    var accounts = await PublicClientApplicationBuilder
+        .Create("<client_id>")
+        .WithAuthority(AzureCloudInstance.AzurePublic, "<tenant_id>")
+        .WithRedirectUri("<redirect_uri>")
+        .Build()
+        .GetAccountsAsync();
+
+    var result = await PublicClientApplicationBuilder
+        .Create("<client_id>")
+        .WithAuthority(AzureCloudInstance.AzurePublic, "<tenant_id>")
+        .WithRedirectUri("<redirect_uri>")
+        .Build()
+        .AcquireTokenInteractive(new[] { "<scope>" })
+        .WithAccount(accounts.FirstOrDefault())
+        .ExecuteAsync();
+
+    return result.AccessToken;
 };
 
 try
@@ -320,20 +320,6 @@ catch (Exception e)
 {
     Console.WriteLine("Connect failed: {0}", e.Message);
 }
-
-...
-
-static string GetAccessToken(AzureActiveDirectoryMetadata aad)
-{
-    var authContext = new AuthenticationContext(aad.Authority);
-
-    var authResult = authContext.AcquireToken(
-        aad.ClusterApplication,
-        aad.ClientApplication,
-        new UserCredential("[email protected]", "TestPassword"));
-    return authResult.AccessToken;
-}
-
 ```
 
 <a id="connectsecureclustersfx"></a>