> Hi:
>
> I was wondering what the behavior is when a delegate is unregistered
> from an event.
>
>
> For example:
>
> Say I've registered my delegate on a server and then the server
> crashes at some point. I don't know this, so I make a call like this
> when I'm logging off
>
> server.serverDelegateEvent -= new ServerDelegate(myServerDelegate);
>
> will this line wait for a reply? or is it aynchronous? If it waits
> for a reply, is there a way to make it an asynchronous one way call?

> I can't picture in my head of any way to make this call asynchronous
> if it isn't already. But then again, I'm no C# guru.

<sunnyask@icebergwireless.com> wrote:

>Hi Steve,
>please, read inline:
>
>
>In article <4035644e.70510108@news.microsoft.com>, gs_sarge@yahoo.com
>says...
>> Hi:
>>
>> I was wondering what the behavior is when a delegate is unregistered
>> from an event.
>>
>>
>> For example:
>>
>> Say I've registered my delegate on a server and then the server
>> crashes at some point. I don't know this, so I make a call like this
>> when I'm logging off
>>
>> server.serverDelegateEvent -= new ServerDelegate(myServerDelegate);
>>
>> will this line wait for a reply? or is it aynchronous? If it waits
>> for a reply, is there a way to make it an asynchronous one way call?
>Yes, subscribtion/unsubscribtion from the event is like a normal method
>invocation, so the client will wait for the call to return.
>
>> I can't picture in my head of any way to make this call asynchronous
>> if it isn't already. But then again, I'm no C# guru.
>
>the quick way is to put the subscription/unsubscribtion from the event
>in separate methods at the client. Then you can create delegates to
>these methods and call them asynchronously. The following code is not
>tested (I just type it in the reader, so be careful for typos):
>
>private delegate void ManageEventDelegate();
>
>private void AttachHandler()
>{
>server.serverDelegateEvent += new ServerDelegate(myServerDelegate);
>}
>
>private void DettachHandler()
>{
>server.serverDelegateEvent -= new ServerDelegate(myServerDelegate);
>}
>
>//and in your code you make something like:
>
>ManageEventDelegate dd = new ManageEventDelegate(this.DettachHandler);
>dd.BeginInvoke(null, null);
>
>
>Please, note again, I have never used this, as I do not think that I
>should not care about if event unsubscription will fail.
>But is should work if you realy need this.
>
>Hope that helps
>Sunny