C# as VB.NET in dotMSN? [RESOLVED]

[LITHIA]

Hi,

I am trying out dotMSN and its great, and I am going from the sample.

Unfortunately, the sample is in C# and I don't know C#

I have managed to make my VB.NET app successfully connect to MSN Messenger but I can't to much more than that...

Here is a section I want to concentrate on:

private void ConversationCreated(Messenger sender, ConversationEventArgs e)
		{
e.Conversation.ContactJoin += new Conversation.ContactJoinHandler(ContactJoined);
}

and the line here:

e.Conversation.ContactJoin += new Conversation.ContactJoinHandler(ContactJoined);

And i have no idea how I write that in VB.NET

First of all, I don't know what its trying to do. the += thing baffles me... and second, VB.NET won't even let me write e.Conversation.ContactJoin because ContactJoin is an event. So I am completely confused...

And by the above bit, should I be writing it like this in vb?

Private Sub ConversationCreated(ByVal Sender As Messenger, ByVal e As ConversationEventArgs)

Thanks very much for the help! Sorry for including C# but I needed to post it in this forum, so please help me with this! I am so confused!

[Pirate]

You figured this part right :

Private Sub ConversationCreated(ByVal Sender As Messenger, ByVal e As ConversationEventArgs)

There other one is wirring the event with the event handler . In C# + means , add and - means remove . So in VB.NET , it should be something like this :

AddHandler Conversation.ContactJoin , AddressOf ContactJoined

I think in VB.NET , you have to create a delegate that matches the signature of the event , then instantiate it and use it in the event handler .

[LITHIA]

wow...

thanks pirate... although i am really inexperienced and don't know anything about the delegates and instantiating stuff...

Anyway,

dotMSN is this class with all the stuff in. it has the class of
Conversation, i've attached the screenshot.

AddHandler Conversation.ContactJoin , AddressOf ContactJoined

that doesn't work... when I write AddHandler i get a list of the objects available on my form.
Conversation.ContactJoin aint an object, shown in the screenshot.

And i can never seem to get ContactJoin to appear as it keeps saying its an event (its got the yellow lightning bolt next to it) but AddHandler did look right... because it said Object as Event, even though i dont think it's an object, or at least not an object i can get at.

Thanks for the help pirate, you couldn't - just a tad - explain this delegate thing for me could ya preeeetty please?

thankies!

sorry for being so mumbled, im a newb

[LITHIA]

um ill have a go at attaching that image again...

[Pirate]

The thing is , the event signature must match the event handler signature .(in the second step) .

Public WithEvents ConvClass As dotMSN.Conversation

Next step is , add the event .

AddHandler ConvClass.ContactJoin, AddressOf ContactJoinHandler

'This is the event handler
Private Sub ContactJoinHandler(ByVal Sender As Messenger, ByVal e As ConversationEventArgs)

'Do your stuff here

End Sub

I don't know if this is correct but I'm guessing since I've never looked at this class . It's just hard in VB.NET

edit , the delegate thingy , is just a pointer to a method you need to fire . You can call it just like you're calling the method itself .

[LITHIA]

damn... this just isn't working how its suppost to...

Here's the sample of the C# version that works, I've attached it.

[Pirate]

Try this :

1-Class level variable :

Public msngerClass As New Messenger

2-Then ,this where we will set up the event and its handler

Private Sub ConversationCreated()
        AddHandler msngerClass.ConversationCreated, AddressOf MSNConversationCreatedhandler
 
End Sub

3-Finally , this is the event handler that is hopefully called by ConversationCreated event .

Private Sub MSNConversationCreatedhandler(ByVal sender As Messenger, ByVal e As ConversationEventArgs)
        'Do this 
    End Sub

I can't test it unless I translate all that code into VB .

[LITHIA]

thanks pirate, ill try it out when i get home - at school at the minute. boring ict...

[LITHIA]

yay!!! thanks so much pirate!!! it works great!

I'm really getting the hang of this class now, I don't think there is much I can't acomplish now!

Thanks again so much! I'll tell you how it goes in the future for my program

Problem resolved by Pirate

[Pirate]

You're welcome .