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Answer Posted / srinivas.r
An iterator is a section of code that returns an ordered
sequence of values of the same type.
An iterator can be used as the body of a method, an
operator, or a get accessor.
The iterator code uses the yield return statement to return
each element in turn. yield break ends the iteration. For
more information, see yield.
Multiple iterators can be implemented on a class. Each
iterator must have a unique name just like any class
member, and can be invoked by client code in a foreach
statement as follows: foreach(int x in
SampleClass.Iterator2){}
The return type of an iterator must be IEnumerable,
IEnumerator, IEnumerable<T>, or IEnumerator<T>.
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