can’t user IHandle<Dictionary<string, object>>

[wuhl508159280]

I have mainWindown,Usercontrol is in the ContentControl container in mainWindon。
public void Handle(Dictionary<string, object> message) { if (message is null) return; foreach (var v in message) { Cnds.Common.LocalLoggingService.Info("value：" + v.Value.ToString()); switch (v.Key) {
case "Content":
Main.Content = v.Value;
break;
}
}
but usercontrol also have IHandle<Dictionary<string, object>>
this error,because i don't send message for usercontrol by Token

[canton7]

I don't understand what your question is I'm afraid.