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.NET Forum / Windows Forms / WinForm General / March 2006Generic Event Handler
Is there any generic event arguments which will suffice all type of event arguments for example I want to capture all the events in the form like this public sub generalEvent(byval sender as ..., eventarg ...) control.Mousemove,mouseclick,click etc Thanks Sudheendra All custom event arguements must inherit from the EventArgs class, so you can pass this type to your generic event handler. You'll have to find a way to determine the specific event that occured to enable you cast the EventArgs type to the actual type you need in other to access the right methods/properties of the event args. public sub generalEvent(object sender, EventArgs e) { } Hope this helps... > Is there any generic event arguments which will suffice all type of event > arguments for example I want to capture all the events in the form like this [quoted text clipped - 3 lines] > Thanks > Sudheendra > All custom event arguements must inherit from the EventArgs class, No - It's only a convention. Events can have any delegate type whatsoever. Plus, I may be mistaken but I think the signature of the event handling routine must match the delegate precisely - it can't just use the basic EventArgs class as it's second parameter if it's going to handle (for example) the MouseDown event (which requires a subclass of MouseEventArgs or something like that). >> All custom event arguements must inherit from the EventArgs class, > > No - It's only a convention. Events can have any delegate type whatsoever. > Plus, I may be mistaken but I think the signature of the event handling > routine must match the delegate precisely - it can't just use the basic > EventArgs class as it's second parameter if it's going to handle (for > example) the MouseDown event (which requires a subclass of MouseEventArgs or > something like that). I may be wrong, but isn't this allowed in dot net 2.0? 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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