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.NET Forum / Languages / C# / March 2008fire events in derived class
whats the best way of firing events in derived class? expose a protected function in base class which fires the event? Also where should i declare the delegate? same file as the base class? > whats the best way of firing events in derived class? > expose a protected function in base class which fires the event? That's certainly the conventional way of doing it, yes. > Also > where should i declare the delegate? same file as the base class? Which version of the framework are you using? If you can get away without declaring your own delegate type, e.g. using EventHandler<T>, that would be for the best.  SignatureJon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet World class .NET training in the UK: http://iterativetraining.co.uk > > whats the best way of firing events in derived class? > > expose a protected function in base class which fires the event? [quoted text clipped - 11 lines] > Jon Skeet - <sk...@pobox.com>http://www.pobox.com/~skeet Blog:http://www.msmvps.com/jon.skeet > World class .NET training in the UK:http://iterativetraining.co.uk am using .net 3.0 vs2008 > > Which version of the framework are you using? If you can get away > > without declaring your own delegate type, e.g. using EventHandler<T>, > > that would be for the best. > > am using .net 3.0 vs2008 In that case I'd use EventHandler<T>, declaring your own EventArgs subclasses where you need to. SignatureJon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet World class .NET training in the UK: http://iterativetraining.co.uk > > > Which version of the framework are you using? If you can get away > > > without declaring your own delegate type, e.g. using EventHandler<T>, [quoted text clipped - 8 lines] > Jon Skeet - <sk...@pobox.com>http://www.pobox.com/~skeet Blog:http://www.msmvps.com/jon.skeet > World class .NET training in the UK:http://iterativetraining.co.uk That worked.. thanks What if i was using an older version.. then where would i put the delegates? <snip> > That worked.. thanks > What if i was using an older version.. then where would i put the > delegates? Personally, I tend to like having a file called Delegates.cs with all the delegates for the namespace. It means it's one place to find them, and they're neither cluttering up other files, nor taking up a whole file for a single signature. It's entirely up to you though. If the delegate is only going to be used by a single type, you could nest it within that type, if you want. SignatureJon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet World class .NET training in the UK: http://iterativetraining.co.uk > > > > Which version of the framework are you using? If you can get away > > > > without declaring your own delegate type, e.g. using EventHandler<T>, [quoted text clipped - 12 lines] > What if i was using an older version.. then where would i put the > delegates? Hi, If using version 1.1 (NOTE that if using 2.0 you can still use EventArgs<T>) you need to declare the delegate explicitely. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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