public void GetDataColumns(BigQueryConnection bigQueryConnection)
{
  
  bigQueryConnection.Open();
  BigQueryLoader loader = new BigQueryLoader();
  loader.Connection = bigQueryConnection;
  loader.TableName = "load_table";
  BigQueryLoaderColumn myColumn;
  try
  {
    loader.CreateColumns();
    for (int i = 0; i < loader.Columns.Count; i++)
    {
      myColumn = loader.Columns[i];
      Console.WriteLine(myColumn.Name);
      Console.WriteLine(myColumn.BigQueryType.ToString());
      Console.WriteLine(myColumn.Size);
      Console.WriteLine(myColumn.Scale);
      Console.WriteLine(myColumn.Precision);
      Console.WriteLine();
    }
   }
  finally
  {
    bigQueryConnection.Close();
  }
}