Question

我开始用C＃.NET编程。我为工人制作了一个网络日历，他们可以查看由于疾病，假期等而未上班的天数。起初我用2个数组做了。一个用于具有这些尺寸的完整日历：

calendar[person_code][month][day][6 items] -> calendar[int][int][int][object (starting absence date, type of absence, etc)]

另一个是具有一个工作定义的数组，如

person[person_code][13 items] -> person[int][13 string (name, surname, etc)]

我想用类来改进我的代码。我在考虑上面的课程：

public class absence 
{ 
  public int absenceCode { get; set; }
  public int typeAbsence { get; set; }
  public DateTime startingDate { get; set; }
  public DateTime endingDate { get; set; }
  public string description { get; set; }
  public string state { get; set; }

  public constructors...
}

public class calendar 
{
  public int day { get; set; }
  public int month { get; set; }
  public absence absen { get; set; }

  public contructors....
}

public class person 
{
  public int personCode { get; set; }
  public string surname { get; set; }
  public string name { get; set; }
  public string address { get; set; }
  public int maxHolidayDays { get; set; }
  public calendar calend { get; set; }

  public constructors....
}

这是我的代码，但我不知道如何设置和检索信息，如使用数组。我可以为每个人创建一个新的人物实例，但我需要在一个独特的日子里创造一些缺席。（一名工人一天内有时可能缺勤）我曾经使用像

这样的List（T）类

List<person> = new List<person>(), and List<absence> = new List<absence>()

但是如何在一天的“日历”课程中设置List<absence>()？我需要在列表中的某个人的日历日内设置该列表：/

List<person> -> calendar -> List<absence>

我希望这对你来说足够清楚。问候。

Answer 1

我会这样做。 1.Skip日历课程 2.在人员班级中添加缺席集合（例如列表） 3.如果你有IEnumerable（例如List，person []），你可以搜索你需要的数据

public class absence
{
    public int absenceCode { get; set; }
    public int typeAbsence { get; set; }
    public DateTime startingDate { get; set; }
    public DateTime endingDate { get; set; }
    public string description { get; set; }
    public string state { get; set; }
}

public class person
{
    public int personCode { get; set; }
    public string surname { get; set; }
    public string name { get; set; }
    public string address { get; set; }
    public int maxHolidayDays { get; set; }
    // Initialize in constructor if you have an error
    public List<absence> absences { get; set; } = new List<absence>();
}

至于搜索，这将非常容易。让我们说你需要在特定日期缺席的人：

IEnumerable<person> Persons = GetPersonsList();
DateTime dateToCheck = GetAbsentDate();

var absentPersons = Persons.Where(x=>x.absences.Any(a=>a.startingDate>= dateToCheck&&a.endingDate<= dateToCheck));

Answer 2

首先，正如问题评论中提到的user3185569，您已使用此说明更改了代码：Capitalization Conventions

其次，您必须考虑数据表示。如果人和缺席之间的关系变成什么样的？一个人可能有几个缺席（1：N关系）。因此，您必须存储有关缺席的数据以及与此缺席相关的人员。

类：

public class Person 
{
    public int PersonCode { get; set; }
    public string Surname { get; set; }
    public string Name { get; set; }
    public string Address { get; set; }

    //constructor, etc.

    public override string ToString()
    {
        return string.Format("{0} {1} {2} {3}", PersonCode, Surname, Name, Address);
    }

}

public class Absence 
{ 
    public int AbsenceCode { get; set; }
    public int TypeAbsence { get; set; }
    public DateTime StartingDate { get; set; }
    public DateTime EndingDate { get; set; }
    public string Description { get; set; }
    public string State { get; set; }
    //"a link" to person
    public Person Person { get; set; }

    //constructor, etc.

    public override string ToString()
    {
        return string.Format("{0}\t|\t{1}\t{2}\t{3}", Person.ToString(), TypeAbsence.ToString(), 
            StartingDate.ToString("yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture),
            EndingDate.ToString("yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture));

    }
}

用法：

List<Person> persons = new List<Person>()
    {
        new Person() {PersonCode = 1, Surname = "Los", Name = "Maciej", Address = "Poland, ..."},
        new Person() {PersonCode = 2, Surname = "Doe", Name = "John", Address = "USA, ..."},
        new Person() {PersonCode = 3, Surname = "McAlister", Name = "Fred", Address = "UK, ..."},
        new Person() {PersonCode = 4, Surname = "Sommer", Name = "Anna", Address = "Canada, ..."},
    };

List<Absence> absences = new List<Absence>()
    {
        new Absence(){AbsenceCode = 1, TypeAbsence=1, StartingDate = new DateTime(2017,5,11), EndingDate = new DateTime(2017,5,15),
            Description = "whatever", State = "A", Person = persons[0]},
        new Absence(){AbsenceCode = 2, TypeAbsence=1, StartingDate = new DateTime(2017,5,18), EndingDate = new DateTime(2017,6,8),
            Description = "whatever", State = "A", Person = persons[1]},
        new Absence(){AbsenceCode = 3, TypeAbsence=2, StartingDate = new DateTime(2017,6,1), EndingDate = new DateTime(2017,6,12),
            Description = "whatever", State = "B", Person = persons[2]},
        new Absence(){AbsenceCode = 4, TypeAbsence=2, StartingDate = new DateTime(2017,6,1), EndingDate = new DateTime(2017,6,5),
            Description = "whatever", State = "B", Person = persons[0]},
        new Absence(){AbsenceCode = 5, TypeAbsence=1, StartingDate = new DateTime(2017,6,2), EndingDate = new DateTime(2017,6,5),
            Description = "whatever", State = "A", Person = persons[2]}
    };

//define date-range to filter Absences data 
DateTime dfrom = new DateTime(2017,6,5);
DateTime dTo = new DateTime(2017,6,9);

var LastWeekAbsencesByPerson = absences
    .Where(x=> (x.StartingDate<=dTo) && (x.EndingDate>=dfrom))
    .OrderBy(x => x.Person.Surname)
    .ThenBy(x => x.StartingDate)
    .ToList();

foreach(var lwabp in LastWeekAbsencesByPerson)
{
    Console.WriteLine("{0}", lwabp.ToString());
    Console.WriteLine("{0}", new string('-', 60));
}

以同样的方式，您可以按日期，人员，缺席类型等过滤数据

关于日期过滤器，我强烈建议您阅读：Determine Whether Two Date Ranges Overlap

有很多事情要做，要改进，但这是你的工作。

祝你好运！

具有List（T）属性的Class内具有List（T）属性的类

2 个答案: