Windows Forms Generic Inheritance

Question

I have these classes:

class Foo : Form 
    where T1, T2 : EventArgs

class MiddleGoo : Foo

class Goo : MiddleGoo

Answer 1

The T2 Type parameter in Foo class needs to be convertible to EventArgs. But when you are defining your Boo class, you aren't including that constraint. Change your Boo class to this:

class Boo : Foo
    where T1 : EventArgs
    where Y : EventArgs

Also, you have got a syntax error at the Foo class declaration. Change it to :

class Foo
    where T1 : EventArgs
    where T2 : EventArgs