Merge pull request #89202 from WhitWaldo/patch-12

Update service-fabric-reliable-actors-enumerate.md

Author: Court72

articles/service-fabric/service-fabric-reliable-actors-enumerate.md

@@ -53,6 +53,41 @@ do
 while (continuationToken != null);
 ```
 
+While the code above will retrieve all the actors in a given partition, occasionally the need will arise to query the IDs of all actors (active or inactive) across each partition. This should be done by exception as it's quite a heavy task.
+
+The following example demonstrates how to query the partitions of the service and iterate through each in combination with the above example to produce a list of all the active and inactive actors in the service across the Service Fabric application:
+
+
+```csharp
+
+var serviceName = new Uri("fabric:/MyApp/MyService");
+
+//As the FabricClient is expensive to create, it should be shared as much as possible
+FabricClient fabricClient = new();
+
+//List each of the service's partitions
+ServicePartitionList partitions = await fabricClient.QueryManager.GetPartitionListAsync(serviceName);
+
+List<Guid> actorIds = new();
+
+foreach(var partition in partitions)
+{
+    //Retrieve the partition information
+    Int64RangePartitionInformation partitionInformation = (Int64RangePartitionInformation)partition.PartitionInformation; //Actors are restricted to the uniform Int64 scheme per https://docs.microsoft.com/en-us/azure/service-fabric/service-fabric-reliable-actors-introduction#distribution-and-failover
+    IActorService actorServiceProxy = ActorServiceProxy.Create(serviceName, partitionInformation.LowKey);
+    
+    ContinuationToken? continuationToken = null;
+    
+    do 
+    {
+        var page = await actorServiceProxy.GetActorsAsync(continuationToken, cancellationToken);
+        actorIds.AddRange(page.Items.Select(actor => actor.ActorId.GetGuidId());
+        continuationToken = page.ContinuationToken;
+    } while (continuationToken != null);
+}
+
+return actorIds;
+```
 
 
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