Images in GridView

Question

Hi, I use GridView to show data from SQL database. During making SqlDataSource everithing is OK, when I click "Test query" images from data base are shown. But when that SqlDataSource is set as Data Source of GridView control, these column with images is missing. If I ckeck in Column property of GridView, field with image is NO in Selected Fields, but it is in Available Fileds. If I try to add column with images from Available Fileds to Selected Fields, an error  appears.
Please for help how to display images from database with GridView?
thanks