Hi Ram,
Try to use code like this:
oledbdatareader omgbtn.ImageUrl=dr["path of the image"].tostring();
This
"path of the image"
is the column name of your database where you are saving the image's path.
It would be nice if you can provide me the full code so that I can give you some suggestions about your second query..
Regards,
Vamsi Anil