Translating EventAggregators usage of SynchronizationContext to VB.Net

Posted by Phil Sayers on Stack Overflow See other posts from Stack Overflow or by Phil Sayers
Published on 2010-05-19T15:08:46Z Indexed on 2010/05/19 15:10 UTC
Read the original article Hit count: 930

Filed under:

c#-to-vb.net

|

eventaggregator

|

translate

Working with a fairly large VB.Net back office winforms application. 1 million+ LOC. Big ball of mud, 90% of all code is in Forms & other UI controls.

Slowly introducing better architecture as time & recources allows, We've been using ideas from the EventAggrgator by Jeremy Miller.

http://codebetter.com/blogs/jeremy.miller/archive/2008/01/11/build-your-own-cab-extensible-pub-sub-event-aggregator-with-generics.aspx

Initially I stripped out the usage of SynchronizationContext. Now I'm trying to introduce it back, and I'm struggling with the translation of the lamda stuff from c# to vb.net.

Specifically this line of c#

_context.Send(delegate { receiver.Handle(subject); }, null);

This is the vb.net I have so far:

_context.Send(New SendOrPostCallback(AddressOf listener.Handle(message)), Nothing)

The error I'm getting is

listener.Handle(message) <-- AddressOf operand must be the name of a method.

I'm sure I'm missing something simple, but after staring at this for 2 days, I'm lost.

Related posts about eventaggregator

Creating a Custom EventAggregator Class

as seen on Stack Overflow - Search for 'Stack Overflow'
One thing I noticed about Microsoft's Composite Application Guidance is that the EventAggregator class is a little inflexible. I say that because getting a particular event from the EventAggregator involves identifying the event by its type like so: _eventAggregator.GetEvent<MyEventType>(); But… >>> More
WPF/SL EventAggregator implementation with durable subscribers behavior?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi. Currently I'm building an application using latest Prism for Silverlight 4. I've a module and in that module I've two views with view models. Also I've a module view with two regions for each view. In module initialization I'm registering my views and view models in Unity container and also register… >>> More
EventAggregator + Event Broker

as seen on Stack Overflow - Search for 'Stack Overflow'
Anyone look at extending/integrating EventBroker in the EventAggregator in CAB/CAG ? Essentially looking at binding events based on string topics for binding publishers/subscribers in addition to the known event types defined in a common library ! >>> More
EventAggregator, is it thread-safe?

as seen on Stack Overflow - Search for 'Stack Overflow'
Is this thread-safe? The EventAggregator in Prism is a very simple class with only one method. I was surprised when I noticed that there was no lock around the null check and creation of a new type to add to the private _events collection. If two threads called GetEvent simultaneously for the same… >>> More
Can I remove duplicating events in EventAggregator?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I have a quite simple scenario that I cannot get to work correctly. I have 2 views, CarView and CarWindowView (childwindow) with corresponding ViewModels. In my CarView I have an EditButton that that opens CarWindowView (childwindow) where I can edit the Car object fields. My problem is that… >>> More

Developer IT