“Until” extension method for integers in C#

I wrote this simple snippet today, and thought I’d share:

public static IEnumerable<int> Until(this int from, int to)
{
    for (int i = from; i <= to; i++)
    {
        yield return i;
    }
}

Its purpose is to return number ranges:

IEnumerable<int> firstTen = 1.Until(10);
foreach (int i in firstTen)
{
    Console.Write(i + " ");
}

Which outputs the following:

1 2 3 4 5 6 7 8 9 10