问如何使用.NET BigQuery API重用BigQuery连接？

EN

    public async Task InsertAsync(BaseBigQueryTable table, IList<IDictionary<string, object>> rowList, GetBqInsertIdFunction getInsert,CancellationToken ct)
    {
        if (rowList.Count == 0)
        {
            return;
        }
        string tableId = table.TableId;
        IList<TableDataInsertAllRequest.RowsData> requestRows = rowList.Select(row => new TableDataInsertAllRequest.RowsData {Json = row,InsertId = getInsert(row)}).ToList();
        TableDataInsertAllRequest request = new TableDataInsertAllRequest { Rows = requestRows };           
        bool needCreateTable = false;
        BigqueryService bqService = null;
        try
        {
            bqService = GetBigQueryService();                
            TableDataInsertAllResponse response =
                await
                    bqService.Tabledata.InsertAll(request, _account.ProjectId, table.DataSetId, tableId)
                        .ExecuteAsync(ct);               
            IList<TableDataInsertAllResponse.InsertErrorsData> insertErrors = response.InsertErrors;
            if (insertErrors != null && insertErrors.Count > 0)
            {
                //handling errors, removed for easier reading..
            }
        }catch{
           //... removed for easier reading
        }
        finally
        {
            if (bqService != null)
                bqService.Dispose();
        }
       }

private BigqueryService GetBigQueryService()
{
   return new BigqueryService(new BaseClientService.Initializer
   {
       HttpClientInitializer = _credential,
       ApplicationName = _applicationName,
   });
}