Hi, I haven't found this anywhere so I post it here.

I am using CR with Visual Sutdio 2008 and I have encountered the following problem:

To make it easier to inderstand let's suppose I want to have six collumns in my report - customer, amount(of certain goods), name of the good, place(customer wants the good), the price for one unit of the good, total price.
I want report to group the rows by 'customer', and for each 'customer' count the sum of 'amount' and 'price'.
I designed the report using the wizard, source for the report is '.NET Object'(members of a class). When I look at the 'Main Report Preview' in VS2008 everything works fine.
The problem comes when I create a windows form with crystal report viewer and load it with data. The code creates a new instance of the report, sets its data source to an ArrayList, and then set the report source for the report viewer to this instance.
I have done this many time and it always worked. But in this special case, the two summary fields('amount' and 'price' just don't work. They show count instead of sum.

I have no idea what to do, to me everything seems to be set allright, report shows correct data, just the summary fields don't work. Please help, I am desperate.

Unfortunately this is not the case - in the source class they are declared as double.
I also believe that if it was the case you describe, it also would not work in the 'Main Report Preview' in VS.
Thank you anyway, lockwelle.

Yes, I did it analogically with other reports and it works fine.
It also works in 'Main Report Preview' so I believe that when you have objects stored in an ArrayList, Crystal is able to decide about types.
I got an idea that this might not be problem of the sum fuction but something else, as the report in crystalViewer also does not show proper formatting of DateTime item(it shows default instead of what I chose).
And that is a real mystery.