code/KustoCopyConsole/Kusto/DataReaderHelper.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace KustoCopyConsole.Kusto
{
    internal static class DataReaderHelper
    {
        public static IEnumerable<T> ToEnumerable<T>(
            this IDataReader reader,
            Func<IDataReader, T> extractor)
        {
            while(reader.Read())
            {
                yield return extractor(reader);
            }
        }
    }
}