MVVM Light Messenger runs multiple times

Question

I use MVVM Light and use messages for communication between ViewModels to let ViewModel know when it is normal to do something. My problem is that I register for a message and then receive it several times. therefore, so that I do not have any program running, I must create Boolean flags to see if it has already been received. Any idea why this is so and how I can stop it?

Answer 1

Make sure you unregister message handlers when you no longer need them. The messenger keeps a link to registered methods, and this prevents them from collecting garbage.

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Answer 2

, , :

static bool isRegistered = false;

:

if( !isRegistered )
{
   Messenger.Default.Register<MyMessage>(this, OnMessageReceived);
   isRegisterd = true;
}

Answer 3

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Answer 4

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Answer 5

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