Assume you have a base class and another class derived from it. You have events defined
in base class so you wish to use them in the derived class.
class a
{
publicdelegatevoid Amanindelegate();
publicevent Amanindelegate
Amanin;
}
class b:a
{
publicvoid hey0()
{
Amanin();
}
}
class Program
{
staticvoid Main(string[]
args)
{
b b1=new b();
b1.Amanin+=new a.Amanindelegate(b1_Amanin);
b1.hey0();
}
staticvoid b1_Amanin()
{
Console.WriteLine("aboovv");
}
}
Here you have the mentioned error in hey0 method line Amanin();
The best practice is as follows.
class a
{ publicdelegatevoid Amanindelegate(); publicvirtualevent Amanindelegate
Amanin; } class b:a
{ publicoverrideevent a.Amanindelegate
Amanin; publicvoid hey0()
{ Amanin(); } } class Program
{ staticvoid Main(string[]
args) { b b1=new b();
b1.Amanin+=new a.Amanindelegate(b1_Amanin);
b1.hey0(); } staticvoid b1_Amanin()
{ Console.WriteLine("aboovv");
} }
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