OracleCommand cmd = new OracleCommand("SELECT ID_TEAM,TEAM_NAME AS Назва,COUNTRY AS Країна,CITY AS                Місто,OFFICE_PHONE       AS Телефон_офісу FROM max.team", conect.con);
        oda = new OracleDataAdapter();
        oda.SelectCommand = cmd;
        oda.SelectCommand.CommandType = CommandType.Text;
        bild = new OracleCommandBuilder(oda);
        oda.Fill(ds);
        if (ds.Tables.Count > 0)
        {
          dataGridView1.DataSource = ds.Tables[0].DefaultView;
          dataGridView1.Columns[0].Visible = false;
        }

oda.Update(ds);
        OracleCommand cmd = new OracleCommand("COMMIT", conect.con);
        cmd.ExecuteNonQuery();
        cmd.Dispose();

 for (int i = 0; i < dataGridView1.RowCount; i++)
      {
        bool t = true;
        for (int j = 1; j < dataGridView1.ColumnCount; j++)
        {
          if (!dataGridView1[j, i].Selected)
            t = false;
        }
        if (t) dataGridView1.Rows.RemoveAt(i);
      }

OracleCommand upd = new OracleCommand("UPDATE adm_potential_footballer SET SURNAME=:SURNAME, NAME=:NAME, PATRONYMIC=:PATRONYMIC, DATE_OF_BIRTH=:DATE_OF_BIRTH,ROLE=:ROLE,NATIONALITY=:NATIONALITY,WORKING_LEG=:WORKING_LEG, GROWTH_SM=:GROWTH_SM, WEIGHT_KG=:WEIGHT_KG, RATABLE_VALUE=:RATABLE_VALUE, ID_CURRENT_TEAM=:ID_CURRENT_TEAM, TEAM_NAME=:TEAM_NAME WHERE ID_FOOTBALLER=:ID_FOOTBALLER", conect.con);

        oda = new OracleDataAdapter();
        oda.UpdateCommand = upd;
        oda.UpdateCommand.CommandType = CommandType.Text;

        upd.Parameters.Add(new OracleParameter("SURNAME", dataGridView1.Columns[1]));
        //остальные так же...