I just found a strange issue using the latest bits of the Telerik RadGridView.
I have a grid that contains ColumnGroupsViewDefinition. Inside one of the group, one of the column is a GridViewComboBoxColumn.
The grid shows correctly on the screen.
If I try to export it using GridViewSpreadExport, I get an exception saying "input string was not in a correct format".
The export works fine if:
-I don't have groups
-I export to HTML using ExportToHTML
-I export to HTML using ExportToCSV
Any help please?