Problems deleting a file on server

This is my code i have to delete an image when an instance of my Image Class is deleted from the db.


Image imgDelete = dbManagement.GetImageById(imageId); string imageUrl = Server.MapPath(imgDelete.Url); string thumbnailUrl = Server.MapPath(imgDelete.UrlThumbnail); //delete thumbnail and big image files File.Delete(imageUrl); File.Delete(thumbnailUrl); dbManagement.DeleteImage(imageId, imageUrl, thumbnailUrl);

 I get this error saying for example: IOException. "The process cannot access the file 'E:\Dokuments\Programming Experiments\Finska Institutet\UserImages\singer.jpg' because it is being used by another process."


anyone here has a clue? Thanks guys!