function

[Jeremy Martin]

Hi,

I have a function contained in a dll file that was written in vb.net. I can invoke methods in this dll ex. mydll.write(data). The problem I am having is that this dll also raises an event but I can't seem to figure out how to get this event trigged in c#.

Any help would be appreciated.

Jeremy

[Cander]

yourdll.EventName += new System.EventHandler(this.A_routinename);

then just add your event

void A_routinename(parameters)
{

}

[Jeremy Martin]

still can't seem to get it. Here is the code that I am working with and the attatched dll.

        static void Main(string[] args)
        {
            System.Windows.Forms.Form holder = new hold();
            JWM.Net.UDP network  = new JWM.Net.UDP();
        
            network.Listen(514);
            
            network.DataArrival += new System.EventHandler(this.iData);
            //yourdll.EventName += new System.EventHandler(this.A_routinename);

            nsender.Send("127.0.0.1",514,Console.ReadLine());            
        }

        static void iData(string data)
        {
            Console.WriteLine(data);        
        } 

[Jeremy Martin]

opps forgot the file.

[Cander]

you need to do some debugging to see if the event is being raised by the dll.

[DevGrp]

To add to what cander said. What is the criteria for this event being fired? There should be some type of test to fire the event base on the results. Then when you subscribe to that event, it should fire based on the criteria.

[Jeremy Martin]

Actually the event is fired, in this case when data comes in on port 514. The class is one that I use is vb to listen for UDP data comming in.

In this example I set it to listen on port 514 with the "network.listen(514)" and send data to the localhost, from its self with the statement "network.send("127.0.0.1",514,Console.Readline());" just say that i used nsender instead of network (but is correct in my tyring-to-work example) but I think my problem is this.

I am trying to make a console application (am sending data to its self just so I can figure out this "event" thing in c#) and when I try to use "this" i won't let me.

Jeremy

[DevGrp]

Lets see the code for the dll. That might be where the problem lies. BTW whats on port 514?

[Jeremy Martin]

Here is some of the class, I removed some of it for simplicity sake, but this is the part where the events are raised, I just took out the stuff the seperates the data recieved and stuff like that.

This is from a thread

Class UDPListener                       'The UDPListener Thread
    Public Port As Integer              'Port to listen on
    Public Enabled As Boolean = False   
    Public TEnable As Boolean = False   
 
    Public Event RecieveFailed(ByVal Message As String)
    Public Event DataArrival(ByVal Data As String)
 
    Public Sub Listen()
               recieve the data
               RaiseEvent DataArrival(datastring)
    End Sub
End Class

This is from the part that sets up the thread

Public Class UDP                                        'The UDP class that listens and sends data
    Public Event Paused()                               'Invokes a event when the listener has been paused
    Public Event Restarted()                            'Invokes a event when the listener has been restarted
    Public Event Distroyed()                            'Invokes a event when the listener has been perminently disabled
    Public Event DataSent(ByVal Data As String)         'Invokes a event when the data has been sent
    Public Event DataArrival(ByVal Data As String)      'Invokes a event when data has been recieved
    Public Event SendFailed(ByVal Message As String)    'Invokes a event when data could not be send to remote host
    Public Event RecieveFailed(ByVal Message As String) 'Invokes a event when an error occured during data retrival
    Public Event ErrorEvent(ByVal Message As String)    'Invokes a event when a subroutine encouters and error
    
    Dim ListenerDistroyed As Boolean = False
    Private WithEvents Listener As New UDPListener
    Private Listenerthread As New System.Threading.Thread(AddressOf Listener.Listen)
 
    Public Sub Listen(ByVal Port As Integer)
        'Set up the listener thread
    End Sub
 
    Public Sub Pause()
        'Pause the listener thread
    End Sub
 
    Public Sub Restart()
        'Restart the listener thread
    End Sub
 
    Public Sub Distroy()
        'Kill the listener thread
    End Sub
 
    Public Sub Send(ByVal Host As String, ByVal Port As Integer, ByVal Data As String)
        'Send the data to the remote host
    End Sub
 
    Private Sub DataArived(ByVal Data As String) Handles Listener.DataArrival
        RaiseEvent DataArrival(Data)
    End Sub
 
    Private Sub DataArrivalError(ByVal Message As String) Handles Listener.RecieveFailed
        RaiseEvent RecieveFailed(Message)
    End Sub
End Class

[DevGrp]

Try and see if this helps;

static void Main(string[] args)
{
	try
	{
		JWM.Net.UDP network = new JWM.Net.UDP();
		network.Listen(514);
		network.DataArrival += new JWM.Net.UDP.DataArrivalEventHandler(OnArrival);
		network.Send("127.0.0.1", 514,Console.ReadLine());
	}
	catch(Exception ex)
	{
		Console.WriteLine(ex.Message);
	}
}
			
static void OnArrival(string data)
{
	Console.WriteLine(data);
}

[Jeremy Martin]

Ah,

I see where I went wrong.

By the way, port 514 is the one used for logging, basically I am recreating a small logging server that is used to write data to a sql server (rather than the standard text file) from a firewall.

Thanks

Jeremy

[DevGrp]

No prob