How to: Create an Iterator Block for a List of Integers (C# Programming Guide)
In this example, an array of integers is used to build the list SampleCollection. A for loop iterates through the collection and yields the value of each item. Then a foreach loop is used to display the items of the collection.
Example
// Declare the collection:
public class SampleCollection
{
public int[] items;
public SampleCollection()
{
items = new int[5] { 5, 4, 7, 9, 3 };
}
public System.Collections.IEnumerable BuildCollection()
{
for (int i = 0; i < items.Length; i++)
{
yield return items[i];
}
}
}
class MainClass
{
static void Main()
{
SampleCollection col = new SampleCollection();
// Display the collection items:
System.Console.WriteLine("Values in the collection are:");
foreach (int i in col.BuildCollection())
{
System.Console.Write(i + " ");
}
}
}
Output
Values in the collection are: 5 4 7 9 3
See Also
Tasks
How to: Create an Iterator Block for a Generic List (C# Programming Guide)
Reference
Using Iterators (C# Programming Guide)
yield (C# Reference)
Array