Question { TCS, 5297 }

What are iterators?

Answer

iterators in dot net is we can write one class inside
another class we cannot create an object from another class

Question { TCS, 5603 }

What are Generics?

Answer

generics in dot net have two concept boxing and unboxing

boxing ... we can convert value type into reference type

unboxing... it is very unexplict operation

Question { Siebel Systems, 7213 }

What is a delegate?

Answer

delegate is a wrapper we can call any method at runtime to
call delegate by calling the keyword del
using system;
namespace sample prog
{
public delegate double(doublex,doubley);
class math
{
public double add(doublex,doubley);
{
returnx+y;
}
}
class sample
{
svm()
{
sample prog.Mathm=new sampleprog.math();
deld=new del(m.add);
c.w(d(48.97,27.29));
d=new del(m.sub);
c.w(d(29.29,7.92));
c.r
}
}