Select it used for proper error handling

C-UI/SCU_Store.cs

@@ -26,20 +26,16 @@ namespace C_UI
             var client = new DicomClient(_storeServerHost, _storeServerPort, false, _storeServerAET, _aet);
             client.NegotiateAsyncOps();
 
-            dicomFiles.ToObservable().Subscribe(
-            async onNext =>
+            dicomFiles.ToObservable()
+                .Select(async onNext =>
                 {
 
                     var request = new DicomCStoreRequest(onNext);
-                request.OnResponseReceived += (req, response) => logger.Info($"{response.Status}-{onNext}" );
+                    request.OnResponseReceived += (req, response) => logger.Info($"{response.Status}-{onNext}");
                     await client.AddRequestAsync(request);
                     await client.SendAsync();
-            },
-            onError =>
-            {
-                logger.Error(onError.Message);
-            }
-            );
+                })
+                .Subscribe(x => { }, onError => logger.Error(onError.Message), () => { });
 
         }
     }