BULK COPY with oledb

public static void UpDataDB(string DB, DataTable DT)
        {
            string ConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + DB +
                                ";User Id=admin;Password=;";
            string SQL = "SELECT * FROM table1 WHERE ReadingID=0";
            string INSERT = "INSERT INTO table1 (Column1, Column2, Column3, Column4) " +
                            "VALUES (@Column1, @Column2, @Column3, @Column4)";

            OleDbConnection OleConn = new OleDbConnection(ConnString);
            OleDbDataAdapter OleAdp = new OleDbDataAdapter(SQL, OleConn);
            OleAdp.InsertCommand = new OleDbCommand(INSERT);
            OleAdp.InsertCommand.Parameters.Add("@Column1", OleDbType.Integer, 8, "Meter1");
            OleAdp.InsertCommand.Parameters.Add("@Column2", OleDbType.Integer, 8, "Meter2");
            OleAdp.InsertCommand.Parameters.Add("@Column3", OleDbType.Integer, 8, "Meter3");
            OleAdp.InsertCommand.Parameters.Add("@Column4", OleDbType.Integer, 8, "Meter4");
            OleAdp.InsertCommand.Connection = OleConn;
            OleAdp.InsertCommand.Connection.Open();
            OleAdp.Update(DT);
            OleAdp.InsertCommand.Connection.Close();
        }