Update Examples that show subscribing to a Static Event in a component to show unsubscribing from the event in Terminate()

Extending/Section-Trees/trees.md

@@ -263,6 +263,11 @@ void TreeControllerBase_RootNodeRendering(TreeControllerBase sender, TreeNodeRen
         e.Node.Title = "My new title";
     }
 }
+public void Terminate()
+{
+    // unsubscribe on shutdown
+    TreeControllerBase.RootNodeRendering -= TreeControllerBase_RootNodeRendering;
+}
 ```
 
 ### TreeNodesRendering
@@ -296,6 +301,11 @@ void TreeControllerBase_TreeNodesRendering(TreeControllerBase sender, TreeNodesR
         e.Nodes.RemoveAll(node => node.Name.StartsWith("Private"));
     }
 }
+public void Terminate()
+{
+    // unsubscribe on shutdown
+    TreeControllerBase.TreeNodesRendering -= TreeControllerBase_TreeNodesRendering;
+}
 ```
 
 ### MenuRendering
@@ -343,6 +353,11 @@ void TreeControllerBase_MenuRendering(TreeControllerBase sender, MenuRenderingEv
         e.Menu.Items.Insert(5, i);
     }
 }
+public void Terminate()
+{
+    // unsubscribe on shutdown
+    TreeControllerBase.MenuRendering -= TreeControllerBase_MenuRendering;
+}
 ```
 
 ## Tree Actions and User Permissions

Getting-Started/Code/Subscribing-To-Events/index.md

@@ -83,7 +83,15 @@ private void ContentService_Published(Umbraco.Core.Services.IContentService send
 {
     // the custom code to fire everytime content is published goes here!
 }
+public void Terminate()
+{
+    // unsubscribe on shutdown
+    ContentService.Published -= ContentService_Published;
+}
 ```
+:::note
+When you subscribe to static events you should also unsubscribe from them when Umbraco shuts down, see the Terminate() method in the example using the -+ syntax to achieve the unsubscribing.
+:::
 
 Let's check if this works by adding a message to the log every time the publish event occurs.
 
@@ -186,7 +194,8 @@ namespace MyProjectName.Web.Components
         // terminate: runs once when Umbraco stops
         public void Terminate()
         {
-            // do something when Umbraco terminates
+            // unsubscribe on shutdown
+            ContentService.Published -= ContentService_Published;
         }
     }
 }

Getting-Started/Code/Umbraco-Services/index.md

@@ -101,7 +101,8 @@ namespace Umbraco8.Components
 
         public void Terminate()
         {
-            // Nothing to terminate
+            //unsubscribe during shutdown
+            ContentService.Saved -= ContentService_Saved;
         }
     }
 }

Implementation/Composing/index.md

@@ -122,7 +122,10 @@ namespace My.Website
 
         // terminate: runs once when Umbraco stops
         public void Terminate()
-        { }
+        {
+            //unsubscribe during shutdown
+            ContentService.Saving -= ContentService_Saving;
+        }
 
         private void ContentService_Saving(IContentService sender, ContentSavingEventArgs e)
         {

Implementation/Custom-Routing/index.md

@@ -117,14 +117,19 @@ namespace Umbraco8.Components
     {
         public void Initialize()
         {
-            PublishedRequest.Prepared += (sender, args) =>
-            {
-                var request = sender as PublishedRequest;
-                // do something…
-            };
+            PublishedRequest.Prepared += PublishedRequest_Prepared;
         }
 
-        public void Terminate() {}
+        private void PublishedRequest_Prepared(object sender, EventArgs e)
+        {
+             var request = sender as PublishedRequest;
+             // do something…
+        }
+
+        public void Terminate() {
+            //unsubscribe during shutdown
+            PublishedRequest.Prepared -= PublishedRequest_Prepared;
+}
     }
 }
 ```

Implementation/Services/index.md

@@ -130,7 +130,8 @@ namespace Umbraco8.Components
 
         public void Terminate()
         {
-        // called when the Umbraco application shuts down.
+            // called when the Umbraco application shuts down.
+            ContentService.Saved -= ContentService_Saved;
         }
     }
 }
@@ -205,6 +206,7 @@ namespace Umbraco8.Components
         public void Terminate()
         {
             // called when the Umbraco application shuts down.
+            ContentService.Unpublishing -= ContentService_Unpublishing;
         }
     }
 }

Reference/Cache/examples/tags.md

@@ -203,7 +203,10 @@ namespace Doccers.Core
             }
         }
 
-        public void Terminate() { }
+        public void Terminate() {
+            //unsubscribe during shutdown
+            ContentService.Published -= ContentService_Published;
+ }
     }
 }
 ```

Reference/Events/ContentService-Events.md

@@ -51,7 +51,8 @@ namespace Umbraco8.Components
         }
         public void Terminate()
         {
-            // Nothing to terminate
+            //unsubscribe during shutdown
+             ContentService.Publishing -= ContentService_Publishing;
         }
     }
 }

Reference/Events/EditorModel-Events/index.md

@@ -39,6 +39,8 @@ namespace My.Website
         // terminate: runs once when Umbraco stops
         public void Terminate()
         {
+            //unsubscribe during shutdown
+            EditorModelEventManager.SendingContentModel -= EditorModelEventManager_SendingContentModel;
         }
 
     private void EditorModelEventManager_SendingContentModel(System.Web.Http.Filters.HttpActionExecutedContext sender, EditorModelEventArgs<Umbraco.Web.Models.ContentEditing.ContentItemDisplay> e)

Reference/Events/MediaService-Events.md

@@ -46,7 +46,8 @@ namespace Umbraco8.Components
 
         public void Terminate()
         {
-            // Nothing to terminate
+            //unsubscribe during shutdown
+            MediaService.Saved -= MediaService_Saved;
         }
     }
 }

Reference/Events/MemberService-Events/index.md

@@ -50,7 +50,8 @@ namespace Umbraco8.Components
         }
         public void Terminate()
         {
-            // Nothing to terminate
+            //unsubscribe during shutdown
+             MemberService.Saved -= MemberService_Saved;
         }
     }
 }

Reference/Management/Services/RelationService/index.md

@@ -358,7 +358,10 @@ namespace Doccers.Core.Components
             }
         }
 
-        public void Terminate() { }
+        public void Terminate() {
+          //unsubscribe during shutdown
+          ContentService.Published -= ContentService_Published;
+        }
     }
 }
 ```

Reference/Routing/Request-Pipeline/inbound-pipeline.md

@@ -58,14 +58,19 @@ namespace Umbraco8.Components
     {
         public void Initialize()
         {
-            PublishedRequest.Prepared += (sender, args) =>
-            {
-                var request = sender as PublishedRequest;
-                // do something…
-            };
+            PublishedRequest.Prepared += PublishedRequest_Prepared;
         }
 
-        public void Terminate() {}
+        private void PublishedRequest_Prepared(object sender, EventArgs e)
+        {
+             var request = sender as PublishedRequest;
+             // do something…
+        }
+
+        public void Terminate() {
+            //unsubscribe during shutdown
+            PublishedRequest.Prepared -= PublishedRequest_Prepared;
+        }
     }
 }
 ```

Reference/Scheduling/index.md

@@ -165,6 +165,14 @@ public class CleanUpYourRoomComponent : IComponent
 
     public void Terminate()
     {
+        //unsubscribe during shutdown
+        _cleanUpYourRoomRunner.TaskCompleted -= Task_Completed;
+
+        _cleanUpYourRoomRunner.TaskStarting -= this.Task_Starting;
+
+        _cleanUpYourRoomRunner.TaskCancelled -= this.Task_Cancelled;
+
+        _cleanUpYourRoomRunner.TaskError -= this.Task_Error;
     }
 }
 

Reference/Searching/Examine/examine-events.md

@@ -16,7 +16,7 @@ In the [Quick Start](Quick-Start/index.md) documentation you can see how to perf
 
 However, what if you want to search through several different node types and search across many different fields, you will typically need to have a query that looks like this:
 
-```c#
+```csharp
 var textFields = new[] { "title", "description",  "content", .... };
 var results = searcher.CreateQuery("content")
                     .GroupedOr(textFields, searchTerm)
@@ -33,7 +33,7 @@ This example will build upon the Umbraco Starterkit as it is a good starting poi
 
 So to add a TransformingIndexValues event we will add a controller that inherits from `IComponent`. Something like this:
 
-```c#
+```csharp
 public class ExamineEvents : IComponent
 {
     private readonly IExamineManager _examineManager;
@@ -66,13 +66,15 @@ public class ExamineEvents : IComponent
 
     public void Terminate()
     {
+        //unsubscribe during shutdown
+       indexProvider.TransformingIndexValues -= IndexProviderTransformingIndexValues;
     }
 }
 ```
 
 You can read more about this [syntax and Components here](../../../Implementation/Composing/index.md). We can now add the logic to combine fields in the `IndexProviderTransformingIndexValues` method:
 
-```c#
+```csharp
 if (e.ValueSet.Category == IndexTypes.Content)
 {
     var combinedFields = new StringBuilder();
@@ -104,7 +106,7 @@ So at this point we have done something along the lines of:
 
 Next is an optional step to highlight how you can access the Umbraco published cache during an indexing event. In this example, we will be adding the breadcrumb values to our combined field.
 
-```cs
+```csharp
 private string GetBreadcrumb(string id)
 {
     if (int.TryParse(idString, out var id))
@@ -129,7 +131,7 @@ This example is here to highlight the user of the Scope Provider. A Scope is req
 
 Before this works the component will have to be registered in a composer. If you already have a composer you can add it to that one, but for this example we will make a new composer:
 
-```c#
+```csharp
 //This is a composer which automatically appends the ExamineEvents component
 public class ExamineComposer : ComponentComposer<ExamineEvents>, IUserComposer
 {
@@ -143,6 +145,6 @@ We append it so it runs as the last one. Now if you start up your website and [r
 
 At this point you can create a query for only that field:
 
-```c#
+```csharp
 var results = searcher.CreateQuery("content").Field("combinedField", searchTerm).Execute();
 ```

Tutorials/Porting-Packages-V8/index.md

@@ -136,6 +136,8 @@ namespace MyProject.Components
 
         public void Terminate()
         {
+            //unsubscribe during shutdown
+            ContentService.Saving -= this.ContentService_Saving;
         }
 
         /// <summary>