Control delegate in an Interface

[pigeonrandle]

Hi,
I have a couple of forms on my client application that use an
asyncronous tcp client to send and recieve data from a server
application.
On each of these forms, i have a Listbox which i would like to add
status information to, like,

"Connected to server"
"Details Sent"
"Details Received"

Is it possible to have my forms implement an interface that includes a
generic delegate such as

"void AddStatusString(String s)"

where i pass the message s from the tcp client to my form's listbox?

This is sending me a bit screwy because i cant get my head around
exactly what needs to be in the interface. I know it can't be "void
AddStatusString(String s)" because this is the function in my form that
is Invoked BY a delegate, if you get my meaning.

Many thanks in advance,
James Randle.

 

[Jon Skeet [C# MVP]]

Hi,
I have a couple of forms on my client application that use an
asyncronous tcp client to send and recieve data from a server
application.
On each of these forms, i have a Listbox which i would like to add
status information to, like,

"Connected to server"
"Details Sent"
"Details Received"

Is it possible to have my forms implement an interface that includes a
generic delegate such as

"void AddStatusString(String s)"

where i pass the message s from the tcp client to my form's listbox?

This is sending me a bit screwy because i cant get my head around
exactly what needs to be in the interface. I know it can't be "void
AddStatusString(String s)" because this is the function in my form that
is Invoked BY a delegate, if you get my meaning.

I'm not sure I see why a delegate is needed. If you implement the
interface, you just write a method AddStatusString which is implemented
by adding the given string to the listbox - why do you need delegates?

 

[Thomas T. Veldhouse]

Hi,
I have a couple of forms on my client application that use an
asyncronous tcp client to send and recieve data from a server
application.
On each of these forms, i have a Listbox which i would like to add
status information to, like,

"Connected to server"
"Details Sent"
"Details Received"

Is it possible to have my forms implement an interface that includes a
generic delegate such as

"void AddStatusString(String s)"

No interface needed.


public delegate void AddStatusStringHandler(String s);

public class TcpServer
{
public event AddStatusStringHandler AddStatusStringEvent;
}

public class ClientForm : Form
{
public ClientForm(TcpServer tcpServer)
{
// form initialization code skipped

tcpServer += new AddStatusStringHandler(AddStatusString);
}

private AddStatusString(String s)
{
// add string to list box
}
}

 

[Thomas T. Veldhouse]

public delegate void AddStatusStringHandler(String s);

public class TcpServer
{
public event AddStatusStringHandler AddStatusStringEvent;
}

Granted ... the name of the delegate and event are horrendous in my example