SqlBulkCopy Matching Columns

private void StorePeople(IEnumerable<Person> people) {
 
  string tableName = "PeopleDBTable";
  DataTable peopleDataTable = new DataTable(tableName);
  peopleDataTable.Columns.AddRange(new DataColumn[] {
    new DataColumn("Id", typeInt32), 
    new DataColumn("FirstName"), 
    new DataColumn("ManagerId", typeInt32), 
    new DataColumn("LastName"), 
    new DataColumn("Suffix")
  });
 
  foreach (var person in people)
  {
    DataRow row = peopleDataTable.NewRow();
    row["FirstName"] = person.FirstName;
    row["LastName"] = person.LastName;
    row["ManagerId"] = person.ManagerId;
    row["Suffix"] = person.Suffix;
    peopleDataTable.Rows.Add(row);
  }
 
  BulkCopy(peopleDataTable, tableName)
}

public void BulkCopy(DataTable table, string tableName) {
 
  var options = SqlBulkCopyOptions.KeepNulls | 
    SqlBulkCopyOptions.KeepIdentity;
 
  using (SqlBulkCopy bulkCopy = 
    new SqlBulkCopy(connection, options))
  {
    bulkCopy.DestinationTableName = 
      "[DatabaseName].[dbo].[" + tableName + "]";
 
    MapColumns(table, bulkCopy);
    try
    {
      // Write from the source to the destination.
      bulkCopy.WriteToServer(table);
    }
    catch (Exception ex)
    {
      // Log the exception somewhere & recover gracefully.
    }
  }
}

private void MapColumns(DataTable infoTable, 
  SqlBulkCopy bulkCopy) {
 
  foreach (DataColumn dc in infoTable.Columns)
  {
    bulkCopy.ColumnMappings.Add(dc.ColumnName, 
      dc.ColumnName);
  }
}