changed image saving and exception handling

TDDD49-P2P/.vs/TDDD49-P2P/v16/.suo

TDDD49-P2P/.vs/TDDD49-P2P/v16/Server/sqlite3/storage.ide

TDDD49-P2P/.vs/TDDD49-P2P/v16/Server/sqlite3/storage.ide-shm

TDDD49-P2P/.vs/TDDD49-P2P/v16/Server/sqlite3/storage.ide-wal

TDDD49-P2P/Models/Connection.cs

TDDD49-P2P/ViewModels/ChatViewModel.cs

.../obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache

...49-P2P/obj/Debug/TDDD49-P2P.csprojAssemblyReference.cache

TDDD49-P2P/obj/Debug/TDDD49-P2P_MarkupCompile.i.cache