Added SetUnifiedGroupVisibility to allow toggling the visibility of a unified group

Core/OfficeDevPnP.Core/Framework/Graph/Model/Group.cs

@@ -0,0 +1,22 @@
+using Newtonsoft.Json;
+
+namespace OfficeDevPnP.Core.Framework.Graph.Model
+{
+    /// <summary>
+    /// Defines a Microsoft Graph Group
+    /// </summary>
+    public class Group
+    {
+        /// <summary>
+        /// True if the group is not displayed in certain parts of the Outlook UI: the Address Book, address lists for selecting message recipients, and the Browse Groups dialog for searching groups; otherwise, false. Default value is false.
+        /// </summary>
+        [JsonProperty("hideFromAddressLists", NullValueHandling = NullValueHandling.Ignore)]
+        public bool? HideFromAddressLists { get; set; }
+
+        /// <summary>
+        /// True if the group is not displayed in Outlook clients, such as Outlook for Windows and Outlook on the web; otherwise, false. Default value is false.
+        /// </summary>
+        [JsonProperty("hideFromOutlookClients", NullValueHandling = NullValueHandling.Ignore)]
+        public bool? HideFromOutlookClients { get; set; }
+    }
+}

Core/OfficeDevPnP.Core/Framework/Graph/UnifiedGroupsUtility.cs

@@ -437,6 +437,53 @@ private static async Task UpdateOwners(string[] owners, GraphServiceClient graph
             }
         }
 
+        /// <summary>
+        /// Sets the visibility of a Group
+        /// </summary>
+        /// <param name="groupId">Id of the Microsoft 365 Group to set the visibility state for</param>
+        /// <param name="accessToken">The OAuth 2.0 Access Token to use for invoking the Microsoft Graph</param>
+        /// <param name="hideFromAddressLists">True if the group should not be displayed in certain parts of the Outlook UI: the Address Book, address lists for selecting message recipients, and the Browse Groups dialog for searching groups; otherwise, false. Default value is false.</param>
+        /// <param name="hideFromOutlookClients">True if the group should not be displayed in Outlook clients, such as Outlook for Windows and Outlook on the web; otherwise, false. Default value is false.</param>
+        public static void SetUnifiedGroupVisibility(string groupId, string accessToken, bool? hideFromAddressLists, bool? hideFromOutlookClients)
+        {
+            if (String.IsNullOrEmpty(groupId))
+            {
+                throw new ArgumentNullException(nameof(groupId));
+            }
+            if (String.IsNullOrEmpty(accessToken))
+            {
+                throw new ArgumentNullException(nameof(accessToken));
+            }
+
+            // Ensure there's something to update
+            if(!hideFromAddressLists.HasValue && !hideFromOutlookClients.HasValue)
+            {
+                return;
+            }
+
+            try
+            {
+                // PATCH https://graph.microsoft.com/v1.0/groups/{id}
+                string updateGroupUrl = $"{GraphHttpClient.MicrosoftGraphV1BaseUri}groups/{groupId}";
+                var groupRequest = new Model.Group
+                {
+                    HideFromAddressLists = hideFromAddressLists,
+                    HideFromOutlookClients = hideFromOutlookClients
+                };
+
+                var response = GraphHttpClient.MakePatchRequestForString(
+                    requestUrl: updateGroupUrl,
+                    content: JsonConvert.SerializeObject(groupRequest),
+                    contentType: "application/json",
+                    accessToken: accessToken);
+            }
+            catch (ServiceException ex)
+            {
+                Log.Error(Constants.LOGGING_SOURCE, CoreResources.GraphExtensions_ErrorOccured, ex.Error.Message);
+                throw;
+            }
+        }
+
 #if !NETSTANDARD2_0
         /// <summary>
         /// Renews the Office 365 Group by extending its expiration with the number of days defined in the group expiration policy set on the Azure Active Directory

Core/OfficeDevPnP.Core/OfficeDevPnP.Core.csproj

@@ -533,6 +533,7 @@
     <Compile Include="Framework\Graph\Model\GroupCreationRequest.cs" />
     <Compile Include="Framework\Graph\Model\SiteClassificationsSettings.cs" />
     <Compile Include="Framework\Graph\Model\Subscription.cs" />
+    <Compile Include="Framework\Graph\Model\Group.cs" />
     <Compile Include="Framework\Graph\Model\User.cs" />
     <Compile Include="Framework\Graph\SubscriptionsUtility.cs" />
     <Compile Include="Framework\Graph\Model\UserDelta.cs" />