internal static bool IsValidDateSelection(Calendar cal, object value)
{
if (value == null)
{
return true;
}
else
{
if (cal.BlackoutDates.Contains((DateTime)value))
{
return false;
}
else
{
if (DateTime.Compare((DateTime)value, cal.DisplayDateRangeStart) < 0)
{
cal.SetValueNoCallback(Calendar.DisplayDateStartProperty, value);
}
else if (DateTime.Compare((DateTime)value, cal.DisplayDateRangeEnd) > 0)
{
cal.SetValueNoCallback(Calendar.DisplayDateEndProperty, value);
}
return true;
}
}
}
