Added .NET streaming subscription example to pubsub page

Signed-off-by: Whit Waldo <whit.waldo@innovian.net>

daprdocs/content/en/developing-applications/building-blocks/pubsub/subscription-methods.md

@@ -203,7 +203,55 @@ As messages are sent to the given message handler code, there is no concept of r
 
 The example below shows the different ways to stream subscribe to a topic.
 
-{{< tabs Python Go >}}
+{{< tabs .NET Python Go >}}
+
+{{% codetab %}}
+
+You can use the `SubscribeAsync` method on the `DaprPublishSubscribeClient` to configure the message handler to use to pull messages from the stream.
+
+```c#
+using System.Text;
+using Dapr.Messaging.PublishSubscribe;
+using Dapr.Messaging.PublishSubscribe.Extensions;
+
+var builder = WebApplication.CreateBuilder(args);
+builder.Services.AddDaprPubSubClient();
+var app = builder.Build();
+
+var messagingClient = app.Services.GetRequiredService<DaprPublishSubscribeClient>();
+
+//Create a dynamic streaming subscription and subscribe with a timeout of 30 seconds and 10 seconds for message handling
+var cancellationTokenSource = new CancellationTokenSource(TimeSpan.FromSeconds(30));
+var subscription = await messagingClient.SubscribeAsync("pubsub", "myTopic",
+    new DaprSubscriptionOptions(new MessageHandlingPolicy(TimeSpan.FromSeconds(10), TopicResponseAction.Retry)),
+    HandleMessageAsync, cancellationTokenSource.Token);
+
+await Task.Delay(TimeSpan.FromMinutes(1));
+
+//When you're done with the subscription, simply dispose of it
+await subscription.DisposeAsync();
+return;
+
+//Process each message returned from the subscription
+Task<TopicResponseAction> HandleMessageAsync(TopicMessage message, CancellationToken cancellationToken = default)
+{
+    try
+    {
+        //Do something with the message
+        Console.WriteLine(Encoding.UTF8.GetString(message.Data.Span));
+        return Task.FromResult(TopicResponseAction.Success);
+    }
+    catch
+    {
+        return Task.FromResult(TopicResponseAction.Retry);
+    }
+}
+```
+
+[Learn more about streaming subscriptions using the .NET SDK client.]({{< ref "dotnet-messaging-pubsub-howto.md" >}})
+
+{{% /codetab %}}
+
 
 {{% codetab %}}