I'm not sure if this will make any difference, I'm by no means the great C#
expert, and we've strayed a bit from Outlook code but you have this line in
your worker class:

internal event SupportIgnoreDelegate SupportIgnoreChanged; // Relates to
your HelloUserDone

I have the equivalent line in my code as:

internal event SupportIgnoreEventHandler SupportIgnoreChanged;

Then in my work completed event handler I have the equivalent of this:

public void ParseAndInsertReceivedMail()
{
// Do work (no OOM objects)
OnSupportIgnoreChanged(new IgnoreEventArgs(true));
}

protected virtual void OnSupportIgnoreChanged(IgnoreEventArgs e)
//Relates to
your OnHelloUserDone
{
SupportIgnoreEventHandler sid = SupportIgnoreChanged;
if (sid != null) sid(this, e);
}

Again, I'm no C# great expert but to me the naming differences and the
declaration syntax of the event are important in getting things to work.

If my suggestions don't help it might be more fruitful to post in a group
dedicated to C# where people more expert in the ins and outs of C# are
likely to hang out.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007.
Reminder Manager, Extended Reminders, Attachment Options.
http://www.slovaktech.com/products.htm


"Dorian" wrote in message
...
So this is what I have now. I've changed all of the accessors for the
event,
delegate and methods. I've created a new class that implements the
EventArgs
class. I don't know where you were going with the args array thing, but in
all the examples I've seen, if you want to include custom data in an event
argument you implement Eventargs. I've gotten my example as close as I can
to
yours and it's still coming back on a different thread. I am currently
calling a protected virtual method that in turn calls the delegate. Don't
worry, I'd be frustrated with me too :-)

// Main Class
public partial class ThisAddIn
{
private void Explorer_SelectionChange()
{
ReceivedMailHandler rmh = new ReceivedMailHandler();
// Do some stuff (Add data to the object)

rmh.SupportIgnoreChanged += new
ReceivedMailHandler. SupportIgnoreEventHandler(rmh_SupportIgnoreChanged );

Thread th = new Thread(rmh.ParseAndInsertReceivedMail);
th.IsBackground = true;
th.Start();
}

void rmh_SupportIgnoreChanged(Object sender,
ReceivedMailHandler.IgnoreEventArgs e) //Relates to your HelloUser
{
btnExpIgnore.Visible = e.visible; //Breakpoint here
}
}

// Worker Class
class ReceivedMailHandler
{
internal delegate void SupportIgnoreEventHandler(object Sender,
IgnoreEventArgs e); // Relates to your HelloUserDoneEventHandler
internal event SupportIgnoreDelegate SupportIgnoreChanged; // Relates to
your HelloUserDone

public void ParseAndInsertReceivedMail()
{
// Do work (no OOM objects)
RaiseIgnoreChange(new IgnoreEventArgs(true));
}

protected virtual void RaiseIgnoreChange(IgnoreEventArgs e) //Relates to
your OnHelloUserDone
{
SupportIgnoreEventHandler sid = SupportIgnoreChanged;
if (sid != null) sid(this, e);
}

public class IgnoreEventArgs : EventArgs
{
public bool visible;

public IgnoreEventArgs(bool Visible)
{
this.visible = Visible;
}
}
}