Following is very basic code snippet to create a simple IEnumerable class. (Question (1): what's the difference between IEnumerable and IEnumerator? Question (2): does anyone in this world still implement IEnumerator?)
using System;
using System.Collections;
public class Person
{
public Person(string fName, string lName)
{
this.firstName = fName;
this.lastName = lName;
}
public string firstName;
public string lastName;
}
public class People : IEnumerable
{
private Person[] _people;
public People(Person[] pArray)
{
_people = new Person[pArray.Length];
for (int i = 0; i <> {
_people[i] = pArray[i];
}
}
IEnumerator IEnumerable.GetEnumerator()
{
foreach (Person p in _people)
yield return p;
}
}
public class MyClass
{
public static void RunSnippet()
{
Person[] peopleArray = new Person[3]
{
new Person("John", "Smith"),
new Person("Jim", "Johnson"),
new Person("Sue", "Rabon"),
};
People peopleList = new People(peopleArray);
foreach (Person p in peopleList)
Console.WriteLine(p.firstName + " " + p.lastName);
}
#region Helper methods
public static void Main()
{
try
{
RunSnippet();
}
catch (Exception e)
{
string error = string.Format("---\nThe following error occurred while executing the snippet:\n{0}\n---", e.ToString());
Console.WriteLine(error);
}
finally
{
Console.Write("Press any key to continue...");
Console.ReadKey();
}
}
#endregion
}
