Infinite generator C#

From the above python exercise here now a C# flavored version

Code

private static IEnumerable<int> InfiniteGenerator(string input)
{
	var index = 0;
	var letters = input.ToCharArray();
	while (true)
	{
		yield return letters[index % letters.Length];
		index++;
	}
}

static public void Main()
{
	var value = 0;
	foreach (var current in InfiniteGenerator("Close"))
	{
		value += current;
		Console.WriteLine(value);
	}
}

Results