protected void ComputeDateRange(IEnumerable <IHistogramable> items)
{
if (items == null)
{
throw new ArgumentNullException("items");
}
foreach (IHistogramable h in items)
{
DateTime dt = (DateTime)h.BucketSelector;
if (MinDate.CompareTo(dt) > 0)
{
MinDate = dt;
}
if (MaxDate.CompareTo(dt) < 0)
{
MaxDate = dt;
}
}
}
