public void savePictureToSql(string kidCode) 
{
SqlConnection con = new SqlConnection("data source = oriel; initial catalog = Kindergarten; user id = oriel; password = 123456;"); 
SqlCommand com = new SqlCommand("insert into Images values(@Pic) select @@IDENTITY update Persons set Picture =@@IDENTITY where Code=(select person_Code from kids where Code= " + kidCode + ")", con); 
MemoryStream stream = new MemoryStream(); 
pictureBox1.Image.Save(stream, System.Drawing.Imaging.
ImageFormat.Jpeg);
byte[] pic = stream.ToArray();
com.Parameters.AddWithValue("@Pic", pic);
try
{
con.Open();
com.ExecuteNonQuery();
}
catch (Exception ex) 
{
MessageBox.Show(ex.Message); 
}
finally
{
con.Close();
}
}
}