Question

我正在创建一个CSV文件，我正在使用C＃和CsvHelper来执行此操作。

我的CSV文件每次最终为205行。我确信它应该创建240个条目，这就是我想要的。

似乎停止在205行创建CSV文件。多次运行时，它会产生205条输入的相同结果。有趣的是，它试图写的最后一个字段是一个字母短，我不知道为什么。

以下是完整的代码。

using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using CsvHelper;
using System.IO;

namespace PinGenerator
{
    class Program
    {
        static void Main(string[] args)
        {
            GeneratePins generatePins = new GeneratePins();
            generatePins.Start();
            Console.ReadLine();
        }
    }

    public class GeneratePins
    {
        private Dictionary<string, String> pinNumbers = new Dictionary<string, String>();
        private List<String> duplicatePinCheck = new List<string>();
        private Random random = new Random();

        // Runs the sequence for the generation of TimeSpans & Pin Numbers.
        // Stores these into JSON / CSV Files
        public void Start()
        {            
            TimeSpan timeSpan = new TimeSpan();
            TimeSpan maxTime = TimeSpan.FromHours(2);

            TimeSpan currentTimeSpan = TimeSpan.FromSeconds(30);
            string currentPin = "0000";

            // CSV File Creation
            TextWriter textWriter = File.CreateText(@"pinNumber.csv");
            var csv = new CsvWriter(textWriter);

            while (timeSpan.Duration() < maxTime.Duration())
            {
                // Create TimeSpan & Pin
                timeSpan = timeSpan.Add(currentTimeSpan);
                currentPin = RandomNumber();

                // Duplicate Check
                while (duplicatePinCheck.Contains(currentPin))
                {
                    currentPin = RandomNumber();
                }
                duplicatePinCheck.Add(currentPin);

                // Cache Results
                string entryPinNumber = currentPin;
                string entryTimeSpan = timeSpan.ToString();

                // JSON
                pinNumbers.Add(entryTimeSpan, currentPin);

                // CSV Creation - Write to CSV File
                csv.WriteField(entryTimeSpan);
                csv.WriteField(entryPinNumber);
                csv.NextRecord();

                // CONSOLE
                Console.WriteLine(entryPinNumber + " / " + timeSpan.ToString());          
            }
            string json = JsonConvert.SerializeObject(pinNumbers, Formatting.Indented);

            // Write to JSON File
            using (System.IO.StreamWriter file = File.CreateText(@"pinNumbers.json"))
            {
                JsonSerializer serializer = new JsonSerializer();
                serializer.Serialize(file, pinNumbers);
            }
            Console.WriteLine("Created " + pinNumbers.Count() + " pin numbers.");
        }

        public string RandomNumber()
        {
            String result = random.Next(0, 9999).ToString();
            result = result.PadLeft(4, '0');
            return result;
        }
    }
}

Answer 1

TextWriter textWriter = File.CreateText(@"pinNumber.csv");

需要更改为

StreamWriter streamWriter = File.CreateText(@"pinNumber.csv");

CSV文件创建时间比预期的要短

1 个答案: