Bulk-Commit: Darft: Anmeldetool.

Interface Definition: done
Server-Side-Implementation: partly done (CR missing, potential Refactor, ...)
Client-Side-Implementation: started: (UI: done, Service: started, but works with SSR)
Missing: Permissions / Roles to restrict access to an event.
Missing: Fields on Event.
Missing: Good Styling
Time-Took: about 12 Hours.
Learning: Commit in smaller packets, rest will be discussed at CR

Server/Repository/EventRepository.cs

@@ -34,7 +34,7 @@ namespace SZUAbsolventenverein.Module.EventRegistration.Repository
             }
             else
             {
-                return db.Event.AsNoTracking().FirstOrDefault(item => item.EventRegistrationId == EventRegistrationId);
+                return db.Event.AsNoTracking().FirstOrDefault(item => item.EventId == EventRegistrationId);
             }
         }