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C# / .NET - create new IEnumerable object from existing List

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Created by:

Marcino

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In this article, we would like to show you how to create new IEnumerable object from existing List in C#.

Practical example:

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using System;
using System.Collections;
using System.Collections.Generic;
​
class EnumerableCollection<T> : IEnumerable<T>
{
    private IEnumerable<T> collection;
​
    public EnumerableCollection(IEnumerable<T> collection)
    {
        this.collection = collection;
    }
​
    public IEnumerator<T> GetEnumerator()
    {
        return this.collection.GetEnumerator();
    }
​
    IEnumerator IEnumerable.GetEnumerator()
    {
        return this.collection.GetEnumerator();
    }
}
​
public class Program
{
    public static void Main()
    {
        List<int> list = new List<int> { 1, 2, 3 };
​
        IEnumerable<int> enumerable = new EnumerableCollection<int>(list);
​
        foreach (int i in enumerable)
            Console.WriteLine(i);
    }
}