Question

所以我上周一直在尝试构建一个CSV解析器，我尝试过Oledb阅读器，但似乎我必须有一个链接到某个文件夹的连接字符串，而我想要一个动态位置。我现在已经建立了这个，看起来几乎就在第4行：

StreamReader reader = new StreamReader(File.OpenRead(attachmentcsv));

文件下划线说

Controller.File（byte []。string）是一种在当前上下文中无效的方法

我认为这意味着我需要把它放在一个函数中，虽然它是我唯一会使用它并且不想真正想要的，因为我在使用函数时还有其他选择吗？

    [HttpPost]
    public ActionResult CreateBulk(HttpPostedFileBase attachmentcsv)
    {
        StreamReader reader = new StreamReader(File.OpenRead(attachmentcsv));
        List<string> clientN = new List<String>();
        List<string> homePage = new List<String>();
        List<string> clientEmail = new List<String>();
        List<string> contName = new List<String>();
        List<string> monthlyQuota = new List<String>();
        List<string> MJTopicsID = new List<String>();
        //string vara1, vara2, vara3, vara4;
        while (!reader.EndOfStream)
        {
            string line = reader.ReadLine();
            if (!String.IsNullOrWhiteSpace(line))
            {
                string[] values = line.Split(',');
                if (values.Length >= 4)
                {
                    clientN.Add(values[0]);
                    homePage.Add(values[1]);
                    clientEmail.Add(values[2]);
                    contName.Add(values[3]);
                    monthlyQuota.Add(values[4]);
                    MJTopicsID.Add(values[5]);
                }
            }
        }
        string[] AddclientN = clientN.ToArray();
        string[] AddhomePage = homePage.ToArray();
        string[] AddclientEmail = clientEmail.ToArray();
        string[] AddcontName = contName.ToArray();
        string[] AddmonthlyQuota = contName.ToArray();
        string[] AddMJTopicsID = contName.ToArray();

        var userId = User.Identity.GetUserId();
        var UserTableID = db.UserTables.Where(c => c.ApplicationUserId == userId).First().ID;

        for (int i = 0; i < AddclientN.Length; i++)
        {
            String Strip = AddhomePage[i].Replace("https://www.", "").Replace("http://www.", "").Replace("https://", "").Replace("http://", "").Replace("www.", "");
            string[] URLtests = { "https://www." + Strip, "http://www." + Strip, "https://" + Strip, "http://" + Strip };
            string[] Metric = MajesticFunctions.MajesticChecker(URLtests);
            var newclient = new Client { clientN = AddclientN[i], homePage = Metric[0], clientEmail = AddclientEmail[i], contName = AddcontName[i].First().ToString().ToUpper() + AddcontName[i].Substring(1), monthlyQuota = Int32.Parse(AddmonthlyQuota[i]), TrustFlow = Int32.Parse(Metric[1]), CitationFlow = Int32.Parse(Metric[2]), RI = Int32.Parse(Metric[3]), MJTopicsID = Int32.Parse(AddMJTopicsID[i]), UserTableID = UserTableID };
            ViewBag.newdomain = newclient;
            db.Clients.Add(newclient);
            db.SaveChanges();
        }
        return RedirectToAction("Index");
    }

Answer 1

你不应该重新发明轮子。您可以尝试CSVHelper库https://joshclose.github.io/CsvHelper/

一行代码可以实现您在多行中尝试的内容：

var records = csv.GetRecords<dynamic>();

您可以找到文档here。

.NET Csv Parser

1 个答案: