DbDataAdapter对象UpdataBatchSize属性批量修改

private void rowUpdated(object sender, SqlRowUpdatedEventArgs e)
      {
         sb.Append("Rows: " + e.RecordsAffected.ToString() + "\r\n");
      }

      private void btnUpdateBatch_Click(object sender, EventArgs e)
      {
         //event subsciption is normally placed in constructor but is here 
         //to encapsulate the sample
         da.RowUpdated += new SqlRowUpdatedEventHandler(rowUpdated);
         ConnectionStringSettings pubs = ConfigurationManager.ConnectionStrings["PubsData"];
         DbConnection connection = new SqlConnection(pubs.ConnectionString);
         SqlCommand cmd = (SqlCommand)connection.CreateCommand();
         cmd.CommandType = CommandType.Text;
         cmd.CommandText = "SELECT * FROM Publishers";
         da.SelectCommand = cmd;
         DataSet pubsDataSet = new DataSet("Pubs");
         SqlCommandBuilder bldr = new SqlCommandBuilder(da);
         da.Fill(pubsDataSet, "publishers");
         //Modify data here
         foreach (DataRow dr in pubsDataSet.Tables["publishers"].Rows)
         {
            dr["pub_name"] = "Updated Toys";
         }
         da.UpdateBatchSize =3;
         da.Update(pubsDataSet, "publishers");
         //if event subscription is in the contructor, no need to 
         //remove it here.
         da.RowUpdated -= new SqlRowUpdatedEventHandler(rowUpdated);
         MessageBox.Show(sb.ToString());
      }