How to determine the Wednesday's in a given date range

gistfile1.cs

void Main()
{
	var start = new DateTime(2012, 10, 1);
	var end = new DateTime(2012, 10, 31);

	var days = from d in start.UpTo(end)
				where d.DayOfWeek == DayOfWeek.Wednesday
				select d;

			   
	days.Dump();
}

public static class Ext
{
	public static IEnumerable<DateTime> UpTo(this DateTime start, DateTime end)
	{
		return start.Generate(x => x.AddDays(1)).TakeWhile(x => x <= end);
	}

	public static IEnumerable<T> Generate<T>(this T start, Func<T, T> getNext)
	{
		var current = start;
		while(true)
		{
			yield return current;
			current = getNext(current);
		}
	}
}