t.Wait() added to wait for finishing sending each file

C-UI/SCU_Store.cs

@@ -27,15 +27,20 @@ namespace C_UI
             client.NegotiateAsyncOps();
 
             dicomFiles.ToObservable()
-                .Select(async onNext =>
+                .Select(async fileName =>
                 {
-
-                    var request = new DicomCStoreRequest(onNext);
-                    request.OnResponseReceived += (req, response) => logger.Info($"{response.Status}-{onNext}");
+                    var request = new DicomCStoreRequest(fileName);
+                    request.OnResponseReceived += (req, response) => logger.Info($"{response.Status}-{fileName}");
                     await client.AddRequestAsync(request);
                     await client.SendAsync();
+                    return fileName;
+                })
+                .Select(t =>
+                {
+                    t.Wait();
+                    return t.Result;
                 })
-                .Subscribe(x => { }, onError => logger.Error(onError.Message), () => { });
+                .Subscribe(filename => logger.Warn($"file sent:{filename}"), onError => logger.Error(onError.Message), () => { });
 
         }
     }