Enumerators and foreach

Data Structures and Algorithms with Object-Oriented Design Patterns in C#

Enumerators and `foreach`

The C# compiler automatically generates code to use an enumerator when the foreach statement is used. Thus, given an object c that is an instance of a concrete class SomeContainer that implements the Container interface, we can use the foreach statement to enumerate the objects in the container as follows:

Container c = new SomeContainer();
// ...
foreach (object obj in c)
{
    Console.WriteLine(obj);
}