Question

过去几个小时我一直对这个问题感到困惑，希望你能帮助我。

我有一个填充数据的列表（请参阅class：allItems），但我想分割数据，因此类项包含所有内容，其中包含子项目的项目中的公共列表。

在这个代码片段中发生的事情是，在for循环期间，项目被添加了相同的值到日期列表，这是我在难以尝试向日期列表添加正确数量的条目给出多少次allStats列表中的同一周数字。

任何帮助都将不胜感激，谢谢。

public class allItems
{
    public DateTime PunchInDate { get; set; }
    public DateTime PunchOutDate { get; set; }
    public DayOfWeek DayOfWeek { get; set; }
    public int WeekNumber { get; set; }
    public int MonthNumber { get; set; }
    public bool PunchedInLate { get; set; }
    public bool PunchedOutLate { get; set; }
}
public class items
{
    public int WeekNumber { get; set; }
    public int MonthNumber { get; set; }
    public List<subItems> Days { get; set; }
}
public class subItems
{
    public bool PunchedInLate { get; set; }
    public bool PunchedOutLate { get; set; }
    public DateTime PunchInDate { get; set; }
    public DateTime PunchOutDate { get; set; }
    public DayOfWeek DayOfWeek { get; set; } 
}
protected int getNumberOfWeeks(List<allItems> list, int numberToFind)
{
    List<allItems> results = list.FindAll(
        delegate(allItems ai)
        {
            return ai.WeekNumber == numberToFind;
        }
        );
    return results.Count;
}
public List<items> getStats(string userId, string type)
{
    List<allItems> allStats = getAllStats(userId, "week");
    List<items> stats = new List<items>();

    foreach (allItems allItem in allStats)
    {
        items item = new items();
        subItems subItem = new subItems();
        List<subItems> Days = new List<subItems>();

        item.MonthNumber = allItem.MonthNumber;
        item.WeekNumber = allItem.WeekNumber;
        item.Days = Days;

        int numberOfWeeks = getNumberOfWeeks(allStats, allItem.WeekNumber);
        for (int i = 0; i < numberOfWeeks; i++)
        {
            subItem.DayOfWeek = allItem.DayOfWeek;
            subItem.PunchedInLate = allItem.PunchedInLate;
            subItem.PunchedOutLate = allItem.PunchedOutLate;
            subItem.punchInDate = allItem.PunchInDate;
            subItem.PunchOutDate = allItem.PunchOutDate;

            Days.Add(subItem);
        }

        items result = stats.Find(week => week.WeekNumber == allItem.WeekNumber);

        if (result == null)
        {
            stats.Add(item);
        }
    }

    return stats;
}

Answer 1

听起来你可以用linq做到这一点：

var allItemsList = new List<allItems>() { ... fill in items ... };
var asItems = 
    from item in allItemsList
    group item by new { week = item.weekNumber, month = item.monthNumber } into byWeekMonth
    select new items()
    {
        weekNumber = byWeekMonth.Key.week,
        monthNumber = byWeekMonth.Key.month,
        days = byWeekMonth.Select(si => 
            new subItems()
            {
                punchedInLate = si.punchedInLate,
                punchedOutLate = si.punchedOutLate,
                // etc, other fields
            }).ToList()
    };

将List <t>的部分拆分为2个List <t>＆＃39>并加入这2个</t> </t>

1 个答案: