将对象列表添加到另一个列表C＃ [英] Add list of objects to another list C#

问题描述

我正在玩List<>对象我试图在列表中创建日期列表。基本上一个对象列表可以包含3个日期。



我不知道怎么做。



班级人物：

I am playing around with List<> of objects. I was trying to create a list of dates within a list. Basically an object list can contain i.e 3 dates.

Im not sure how to do it.

Class called people:

public string Name { get; set; }
public string Surname { get; set; }
public int Age { get; set; }
public List<Dates> numberOfDates{ get; set; } = new List<Dates>();

类称为日期：

Class called Dates:

public DateTime date { get; set; }

我尝试过：



在我的主要表单中，我有两个事件处理程序。一个是 AddPerson 第二个是 AddDates 基本上当你添加日期时，我希望它保存到AddPerson按钮中以添加到对象中（如果有意义的话）。

What I have tried:

In my main form I have two event handlers. One is AddPerson second is AddDates Basically when you add dates I want it to save into the AddPerson button to added into the object (If that make sense).

private void AddPerson(object sender, EventArgs e)
{
Person person = new Person();
person.Name = txtFirstName.Text;
person.Surname = txtSurname.Text;
person.Age = int.Parse(txtAge.Text);

 private void btnAddDates_Click_1(object sender, EventArgs e)
        {
People people = new People();
Dates dates= new Dates();

dates.date = dtpClaim.Value; //dtp is the date time picker                  people.numberOfDates.Add(dates);
        }

简而言之，我在addDates事件中添加日期/日期后，会将其添加到特定日期addPerson事件中的人。

In short, once I add a date/dates in the addDates event, it will add it to the specific person in the addPerson event.

推荐答案

您需要识别相应的人员实例 - 我不知道您如何存储它们，您没有表明：每次添加日期时都会重新创建Person实例，因此它不能存在。



但是一旦你拥有了Person，就很容易：

You need to identify the appropriate person instance - and I have no idea how you are storing them, you don't show that: the Person instance is created anew each time you add a a date, so it can't be there.

But once you have the Person, it's easy:

myPerson.numberOfDates.add(dates);

BTW：尽量避免将事物命名为复数，除非它们是一个集合：Dates是一个单日期存储对象，因此它应该是Date，而People应该是人 - 但你似乎也有一个班级......这让人感到困惑！

BTW: try to avoid naming things as plurals unless they are a collection: "Dates" is a single date storage object, so it should be "Date", and "People" should probably be "Person" - but you appear to have a class for that as well...which gets confusing!

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