public static string NotEmptyNameValueCollectionAsString(NameValueCollection coll, string sComment /* = "" */)
{
if (CollectionsHelper.IsNullOrEmpty(coll))
{
return("");
}
return(NameValueCollectionAsString(coll, sComment));
}
/// <summary>
///
/// </summary>
/// <param name="listOfDates">Expect ascending sequence of dates</param>
/// <returns>List of ranges for contiguous sequense</returns>
/// <remarks>E.g for sequence 1,2,3, 6,7,8,9, 11,12, 14, 18 it should return ranges
/// (1,3) ,(6,9), (11,12), (14,14), (18,18)
/// </remarks>
public static List <DateTimeRange> BuildContiguousGroupsList(List <DateTime> listOfDates)
{
Debug.Assert(!CollectionsHelper.IsNullOrEmpty(listOfDates), "Investigate why?. .");
DateTime startOfRange = DateTime.MinValue;
DateTime prevItem = DateTime.MinValue;
List <DateTimeRange> listOfRanges = new List <DateTimeRange>();
for (int i = 0; i < listOfDates.Count; i++)
{
DateTime item = listOfDates[i];
if (startOfRange == DateTime.MinValue)
{
startOfRange = item;
}
else//not the first
{
Debug.Assert(item >= prevItem, "Expect ascending sequence");
if (prevItem.AddDays(1) == item)
{//contiguous, continue
}
else
{//save the range
listOfRanges.Add(new DateTimeRange(startOfRange, prevItem));
startOfRange = item;
}
}
if (i == listOfDates.Count - 1)
{//The last, close current range
listOfRanges.Add(new DateTimeRange(startOfRange, item));
break;
}
prevItem = item;
}
Debug.Assert(listOfRanges.Count > 0);
return(listOfRanges);
}