类列表在控制台中不断打印为类名? [英] Class List Keeps Printing Out As Class Name In Console?

问题描述

好吧，所以也许我只是累了或者什么，但我似乎无法弄清楚为什么这种情况一直发生.

Ok, so maybe I'm just tired or something but I can't seem to figure out why this keeps happening.

每天都会为我拥有的数据库中的一个数据点调用下面的代码.

The code below is called every day for a data point in a database I have.

当我打印到控制台进行调试时，它只是打印为:

When I print to the console for debugging, it simply prints out as:

NamespaceName.SharePrices

不知道发生了什么.

       public void OnData(TradeBars data)
       {
        decimal price = data["IBM"].Price;
        DateTime today = data["IBM"].Time;
        //--------------Below works fine.
        if (today.Date >= nextTradeDate.Date)
        {
            MarketOnOpenOrder("IBM", 50);
            Debug("Purchased Stock");
            nextTradeDate = today.AddDays(1);
            MarketOnOpenOrder("IBM", -25);
        }
        var derpList = new SharePrices { theDate = today, sharePrice = price };
        List<SharePrices> newList = new List<SharePrices>();
        newList.Add(derpList);
        newList.ForEach(Console.WriteLine);
    }
}

public class SharePrices
{
    public DateTime theDate { get; set; }
    public decimal sharePrice { get; set; }
}

请原谅我的命名习惯.这只是个人项目的线框图.

Please excuse my naming conventions. This is just a wireframe for a personal project.

//-----------编辑

//----------Edit

感谢大家的帮助.我想我不明白的是为什么它在我的 TestClass 中工作我写的只是玩弄假数据，当真正的实现来时它不起作用:

Thanks for the help guys. I guess what I wasn't understanding is why it was working in my TestClass I wrote just playing with fake data, and when the real implementation came it didn't work:

        public static void FindWindowDays()
    {
        DateTime currentDate = DateTime.Now;
        var dates = new List<DateTime>();
        for (var dt = currentDate.AddDays(-windowDays); dt <= currentDate; dt = dt.AddDays(1))
        {
            dates.Add(dt);
        }
        var ascending = dates.OrderByDescending(i => i);
        foreach (var datesyo in ascending)
        {
            Console.WriteLine(datesyo);
        }
    }

这似乎可以很好地将 DateTime 打印到控制台，而无需转换为字符串.但是当我添加第二个元素时，它停止工作.这就是我感到困惑的地方.

This seemed to work fine printing the DateTime to console without converting to string. But when I added the second element, it stopped working. That's where I got confuddled.

推荐答案

你应该按照你想要的格式覆盖你的类的 ToString() ，例如这样:

You should override ToString() for your class in format as you want, for example like this:

public class SharePrices
{
    public DateTime theDate { get; set; }
    public decimal sharePrice { get; set; }

    public override string ToString()
    {
        return String.Format("The Date: {0}; Share Price: {1};", theDate, sharePrice);
    }
}

默认情况下，没有覆盖，ToString() 返回一个代表当前对象的字符串.所以这就是为什么你得到你所描述的.

By default, without overriding, ToString() returns a string that represents the current object. So that's why you get what you described.

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