New to C# -- Events

[Eric]

I need to raise events from a c# class to the caller, a c#
or vb form. In VB you would declare the event in the
class, then just use the RaiseEvent to raise the event, in
the form you would just create a handler that would handle
that event.

How do you do this same thing in c#? Is it possible to
raise events from a C# class to either a C# windows
application or a VB windows application?

Thanks
eric

[William Ryan]

http://www.csharphelp.com/archives/archive51.html
"Eric" <en******@bpa.gov> wrote in message
news:12*****************************@phx.gbl...

I need to raise events from a c# class to the caller, a c#
or vb form. In VB you would declare the event in the
class, then just use the RaiseEvent to raise the event, in
the form you would just create a handler that would handle
that event.

How do you do this same thing in c#? Is it possible to
raise events from a C# class to either a C# windows
application or a VB windows application?

Thanks
eric

[Tian Min Huang]

Hello Eric,

Thanks for your post. I recommend you the following MSDN article:

Raising an Event
http://msdn.microsoft.com/library/de...us/cpguide/htm
l/cpconprovidingeventfunctionality.asp

Hope this helps.

Regards,

HuangTM
Microsoft Online Partner Support
MCSE/MCSD

Get Secure! -- www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

[Nick Malik]

sure... but you aren't talking about events... you are talking about
exceptions.
Events are thrown by an object that another object subscribes to.
Exceptions are propogated up to the caller, like you describe.

create a class, derived from System.Exception, and give it a name.
Then, when you want to throw your "event", create a new object of your type
and "throw" it.

For further information, see
http://msdn.microsoft.com/library/de...ctorTopic1.asp

Hope this helps,
-- Nick

"Eric" <en******@bpa.gov> wrote in message
news:12*****************************@phx.gbl...

I need to raise events from a c# class to the caller, a c#
or vb form. In VB you would declare the event in the
class, then just use the RaiseEvent to raise the event, in
the form you would just create a handler that would handle
that event.

How do you do this same thing in c#? Is it possible to
raise events from a C# class to either a C# windows
application or a VB windows application?

Thanks
eric

[Eric]

Thanks for all of the replies. I am familiar with
exceptions, i do want to raise an event. I have a
component that uses BeginReceive to monitor the message
queue, i want the component to raise an event to the
caller when there is a message in the queue. After a
little research i was able to get this figured out. It's
just a little more setup in C# vs. VB.

Thanks Again.

-----Original Message-----

sure... but you aren't talking about events... you are talking aboutexceptions.
Events are thrown by an object that another object subscribes to.Exceptions are propogated up to the caller, like you describe.
create a class, derived from System.Exception, and give it a name.Then, when you want to throw your "event", create a new object of your typeand "throw" it.

For further information, see
http://msdn.microsoft.com/library/default.asp? url=/library/en-
us/cpref/html/frlrfSystemExceptionClassctorTopic1.asp
Hope this helps,
-- Nick

"Eric" <en******@bpa.gov> wrote in message
news:12*****************************@phx.gbl...

I need to raise events from a c# class to the caller, a c# or vb form. In VB you would declare the event in the
class, then just use the RaiseEvent to raise the event, in the form you would just create a handler that would handle that event.

How do you do this same thing in c#? Is it possible to
raise events from a C# class to either a C# windows
application or a VB windows application?

Thanks
eric

.