Crystal Report: Summarize multiple date fields in one - date

Question

please help me..I've been trying to search this for weeks but can't find the answer..
Given: Currently I have these dates field on my crystal.
01/01/2015
02/24/2015
02/27/2015
02/28/2015
02/29/2015
How can I summarize it in one field to be like this,
01/01/2015, 02/24/2015, 02/27-2015 - 02-29-2015
generally, separate different dates with comma and join dates that are in range or consecutive in order.
Thank you very much.

Answer 1

There is no direct way of summarizing the field in crystal report like you mentioned in your question.
However, you could try a work-around.
Create a Group and group by the 'date' field you want to summarize and then-
1) Create a formula with a shared variable to be placed in the header section of the report:
shared stringVar result="";
2) Create another formula with the same shared variable to be placed in detail section which concatenates your result into a comma separated array:
whileprintingrecords;
shared stringVar result;
if(result='')
then result:=CStr ({Date1.Date1_Text})
else
result:=result + "," +CStr ({Date1.Date1_Text});
Here ,{Date1.Date1_Text} is the date field which you want to summarize.
3) Create another formula with the same shared variable to be placed at the report footer:
shared stringVar result;
NumberVar i;
StringVar array dates := Split(result,",");
//Here you could put your logic to convert dates to date range.
//....
result; // returns final result