Question

我有一个带有股票报价信息的巨大字符串。它看起来像这样：

Date,Open,High,Low,Close,Volume,Adj Close
2016-05-06,49.919998,50.389999,49.66,50.389999,24715600,50.389999
2016-05-05,49.869999,50.299999,49.73,49.939999,25309500,49.939999
2016-05-04,49.84,50.060001,49.459999,49.869999,24171400,49.869999...........

如何将其打包成通用List<Stock>：

Stock hs = new Stock();
hs.Date = Convert.ToDateTime();
hs.Open = Convert.ToDouble();
etc.

MyList.Add(hs)

Answer 1

有以下假设，

每个值都以,分隔，您的输入是一个带有上述模式的长字符串。
第一行有列名。

。您可以使用这些Linq语句执行此操作。

    string input = @"Date,Open,High,Low,Close,Volume,AdjClose,
                    2016-05-06,49.919998,50.389999,49.66,50.389999,24715600,50.389999,
                    2016-05-05,49.869999,50.299999,49.73,49.939999,25309500,49.939999,
                    2016-05-04,49.84,50.060001,49.459999,49.869999,24171400,49.869999";

    var stacks = input.Split(new string[] {","}, StringSplitOptions.RemoveEmptyEntries)
                      .Select((x,i)=> new {index= i/7, item=x }) // split with 7 columns
                      .Where(x=>x.index !=0) // skip header row.
                      .GroupBy(x=>x.index)                      
                      .Select(x=> new Stack() 
                             {
                                 Date = DateTime.ParseExact(x.First().item.Trim(),"yyyy-MM-dd", CultureInfo.InvariantCulture),
                                 Open = double.Parse(x.Skip(1).First().item),
                                 High = double.Parse(x.Skip(2).First().item),
                                 Low = double.Parse(x.Skip(3).First().item),
                                 Close = double.Parse(x.Skip(4).First().item),
                                 Volume = double.Parse(x.Skip(5).First().item),
                                 AdjClose = double.Parse(x.Skip(6).First().item),

                             })
                      .ToList();

选中此Demo

Answer 2

所以，我这样做了：

我的HisctoricalStock课程：

public class HistoricalStock
    {
        public DateTime Date { get; set; }
        public double Open { get; set; }
        public double High { get; set; }
        public double Low { get; set; }
        public double Close { get; set; }
        public double Volume { get; set; }
        public double AdjClose { get; set; }
    }

我使用外部csv文件解决了我的问题（但它是可选的）。

List<HistoricalStock> retval = new List<HistoricalStock>();

                try
                {
                    File.WriteAllText("G:/Test.csv", web.DownloadString(string.Format("http://ichart.finance.yahoo.com/table.csv?s={0}&c={1}", ticker, yearToStartFrom)));
                }
                catch (FileNotFoundException exc)
                {
                    Console.WriteLine(exc.Message);
                }

                StreamReader sr = new StreamReader("G:/Test.csv");

                string currentLine;
                List<string> stoksList = new List<string>();

                // while stockList isn't empty
                while ((currentLine = sr.ReadLine()) != null)
                    stoksList.Add(currentLine);

                // First row is a header 
                stoksList.RemoveAt(0);

                foreach (string str in stoksList)
                {
                    string[] parsedString = str.Split(',');

                    HistoricalStock hs = new HistoricalStock();

                    hs.Date = Convert.ToDateTime(parsedString[0]);
                    hs.Open = Convert.ToDouble(parsedString[1]);
                    hs.High = Convert.ToDouble(parsedString[2]);
                    hs.Low = Convert.ToDouble(parsedString[3]);
                    hs.Close = Convert.ToDouble(parsedString[4]);
                    hs.Volume = Convert.ToDouble(parsedString[5]);
                    hs.AdjClose = Convert.ToDouble(parsedString[6]);

                    retval.Add(hs);
                }

如何将我的股票报价数据拆分成列表？

2 个答案: