MVVM light sending message from ViewModel to View
c#, messenger, mvvm
Solution
Now I have not ever used MVVM Light Messenger, but as with any event aggregator/message bus, it makes sense so that the handler method takes in the object that it handles as an argument:
I have checked the source code and the registration looks as follows:
public virtual void Register<TMessage>(object recipient, Action<TMessage> action)
With that in mind, this definition:
private void HandleClearSettings(ClearNewProjectSettingsMessage message)
{
}
should fix your registration:
Messenger.Default.Register<ClearNewProjectSettingsMessage>(this, HandleClearSettings);
Problem
I'm very new to MVVM light and im having some problems using the Messenger.. Im trying to send a message from the ViewModel to the View but this is not working for me, I have tried going through posts and sample code but i think there is something very simple that i am missing.. i appreciate your help.. In my ViewModel I send a message ``` Messenger.Default.Send(new ClearNewProjectSettingsMessage()); ``` This is my Message class, I dont really know what to put here because everything is in my View class ``` public class ClearNewProjectSettingsMessage { public ClearNewProjectSettingsMessage() { } } ``` I register the message in the Views constructor: ``` Messenger.Default.Register<ClearNewProjectSettingsMessage>( this, () => ClearSettings() ); ``` This unfortunately does not compile so I tried this: ``` Messenger.Default.Register<ClearNewProjectSettingsMessage>(this,ClearSettings); ``` But it still does not work.. This is the method i want to call (in the view): ``` private void ClearSettings() { passwordBox.Clear(); } ``` Thanks.