OleDbCommand cmd = new OleDbCommand("INSERT INTO SlideShowTable1 ss(ss.ImageName,ss.Description,ss.CategoryName,ss.ADshop_name,ss.ADShop_Address,ss.ADshop_city,ss.ADShop_mob,ss.ADshop_Email,ss.U_id,ss.AreaName,ss.startddate,ss.endddate,ss.ImagePath,ss.BImageName,ss.BImagePath,ss.Total_Days,ss.Days_remain)Select u.U_id ,u.U_name, u.U_Email,s.ImageName ,s.Description,s.CategoryName,s.ADshop_name,s.ADShop_Address,s.ADshop_city,s.ADshop_mob,s.ADshop_Email,s.AreaName,s.startddate,s.endddate,s.ImagePath,s.BImageName,s.BImagePath,s.Total_Days,s.Days_remain from LOGIN u ,SlideShowTable s where u.U_id= " + userid, s.U_id = " + userid,ss.U_id=" + userid, con);
int result = cmd.ExecuteNonQuery();
it gives an error that s is not exist in current contex