SPListItemCollection.GetDataTable() delivers wrong Double Values

Question

Hi there,
i have a Problem with the .getDataTable() Method of a SPListItemCollection Object. Within the SPListItemCollection all Double Values are displayed correct. But the DataTable Edition puts the decimal point to the End of the number. And i have no idea why,
and how to get rid of this. Any hints?
DataTable dt = new DataTable("ChargeData");
listItems[0]["PRICE"] -> 107.10 | object {double}
dt = listItems.GetDataTable();
dt[0]["PRICE"] -> 10071.0 | object {double}
P.s.: If this is realted in some way, the initial List for the SPListItemCollection is a External List with a MSSQL Connection. The 'Price' Column within the SQL Server is a "float".
My Best Regards
THO
EDIT #1
I've try to figure out when this problem appears. Always or only on BCS lists, so i tried (with Powershell), and found out, this seems to be a Problem with the Autogenerated BCS List.
$nonbcslist.Items[0]["PRICE"] -> 107,10 | double
$dt = $nonbcslist.Items.GetDataTable()
$dt.Rows[0]["PRICE"] -> 107,10 | double
$bcslist.Items[0]["PRICE"] -> 107,10 | double
$bcsdt = $bcslist.Items.GetDataTable()
$bcsdt.Rows[0]["PRICE"] -> 10710 | double

Answer 1

I noticed that in one example you are using a period to segment the double and in the other a comma. I wonder if that is somehow tied into the wrong conversion when returning a data table.
I have seen GetDataTable() break some other formatting in the past, specifically when working with multi-select user fields. Your best bet may be to iterate through the collection and manually populate a blank table.
Dimitri Ayrapetov (MCSE: SharePoint)