Syntax error (missing operator) in query expression 'System.Byte[]'

Question

Hi i was using stored procedure in SQL Server to pass parameters to the query , but now I'm changing my database to ms access and it's my first time to deal with.

how can i pass byte[] to sql query ? bacause i got this error Syntax error (missing operator) in query expression 'System.Byte[]'.

this is my code

    public static int EditWhois(object ID,object Image, object Ranswer, object Fanswer1, object Fanswer2, object Fanswer3)
    {
        int result = 0;
        String sql = "UPDATE Whois SET [Image]="+@Image+", Ranswer=" + Ranswer + ", Fanswer1=" + Fanswer1 + ",Fanswer2=" + Fanswer2 + ",Fanswer3=" + Fanswer3 + " WHERE ID=" + ID;
        System.Windows.Forms.MessageBox.Show(sql);
        cmd = new OleDbCommand(sql, con);

        //cmd.Parameters.AddWithValue("@ID", ID); 
        //cmd.Parameters.AddWithValue("@Image", Image);
        //cmd.Parameters.AddWithValue("@Ranswer", Ranswer);
        //cmd.Parameters.AddWithValue("@Fanswer1", Fanswer1);
        //cmd.Parameters.AddWithValue("@Fanswer2", Fanswer2);
        //cmd.Parameters.AddWithValue("@Fanswer3", Fanswer3);

        if (con.State != ConnectionState.Open)
        {
            con.Open();
            result = cmd.ExecuteNonQuery();
            con.Close();
        }
        return result;
    }

Answer 1

result is still 0; i know the problem where it was . if the connection is closed the query will be executed successfully , but if it is opend it will not be executed due to this condition .

if (con.State != ConnectionState.Open)
{
    con.Open();
    result = cmd.ExecuteNonQuery();
    con.Close();
}

it must be

if (con.State != ConnectionState.Open)
{
    con.Open();
}
    result = cmd.ExecuteNonQuery();
    con.Close();

thanks all .