如何连接两个相同但不同类的变量？

Question

Okay I'm making some sort of database where I have 4 classes program.cs, athlete.cs, event.cs and venue.cs. One of the methods they want me to include is to search for the athlete, as well as displaying the event name and venue name. This has to be done with all the variables being private.

So I was wondering if there is anyway to have the event name variable in the athlete class connect to the event name in the event class.

Athlete Class

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class Athlete
{
    private string firstname, lastname, address, phonenumber;
    private List<Event> eventlist = new List<Event>();
    private Event athleteEvent;

    public string athleteFirstname
    {
        get
        {
            return firstname;
        }
        set
        {
            firstname = value;
        }
    }

    public string athleteLastname
    {
        get
        {
            return lastname;
        }
        set
        {
            lastname = value;
        }
    }
    public string athleteAddress
    {
        get
        {
            return address;
        }
        set
        {
            address = value;
        }
    }
    public string athletePhonenumber
    {
        get
        {
            return phonenumber;
        }
        set
        {
            phonenumber = value;
        }
    }

    public Event eventA
    {
        get
        {
            return athleteEvent;
        }
        set
        {
            athleteEvent = eventlist[0].eventName;
        }

    }
}

Event Class

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class Event
{
    private string name, date, time, venueEvent;
    private double fee;
    private List<Athlete> athletes = new List<Athlete>();


    public void addAthlete(Athlete a)
    {
        athletes.Add(a);// adds the athletes towards this class
    }

    public void displayAthletes()// method used for displaying athlete when requested
    {
        foreach (Athlete a in athletes) //Constructor
        {
            Console.WriteLine(a.athleteFirstname);
            Console.WriteLine(a.athleteLastname);
        }
    }

    public string eventName
    {
        get
        {
            return name;
        }
        set
        {
            name = value;
        }
    }
    public string eventDate
    {
        get
        {
            return date;
        }
        set
        {
            date = value;
        }
    }

    public string eventTime
    {
        get
        {
            return time;
        }
        set
        {
            time = value;
        }
    }

    public double eventFee
    {
        get
        {
            return fee;
        }
        set
        {
            fee = value;
        }
    }

    public string eventVenue
    {
        get
        {
            return venueEvent;
        }
        set
        {
            venueEvent = value;
        }
    }
}

This is my search method

#region Search Athlete
    static void searchAthlete()
    {
        Console.WriteLine("Please enter which athlete you would like to find");
        string searchChoice = Convert.ToString(Console.ReadLine());

        for(int i = 0; i < athleteClass.ToArray().Length;i++) // goes through the athletes class to the end
        {
            if (searchChoice == athleteClass[i].athleteFirstname) // checks to see what has been entered matches any of the data in the athlete class
            {
                Console.WriteLine("Athlete First Name: " + athleteClass[i].athleteFirstname);
                Console.WriteLine("Athlete Last Name:  " + athleteClass[i].athleteLastname);
                Console.WriteLine("Event Name: " + athleteClass[i].eventA);
                Console.WriteLine("Venue Name: " + eventClass[i].eventVenue);
            }
            else
            {
                Console.WriteLine("No record was found");
            }
            //for (int e = 0; e < 2; e++)
            //{
            //    if (athleteClass[e].eventA == eventClass[e].eventName) // checks 
            //    {
            //        Console.WriteLine("Event name: " + eventClass[e].eventName);
            //    }
            //    for (int v = 0; v < 2; v++)
            //    {
            //        if (eventClass[v].eventVenue == venueClass[v].venueName)
            //        {
            //            Console.WriteLine("Venue Name: " + venueClass[v].venueName);
            //        }
            //    }
            //}

        } 
    }
    #endregion

Answer 1

For every Athlete you have a list of Events as denoted by your code. When they add a new Athlete they should be able to add a list of Events like {event1, event2...etc} at the console. In your search you just have to call the Athlete object, Athlete.GetEventsList() and print out each event associated with this Athlete. I'll do pseudocode so you learn on your own.

Edit First of all you need to save Events for each Athlete. So you need a Set/Get method to save incoming Events from the console for the particular Athlete. Once you have a list of Events for the Athlete then you can do this.

for each Athlete a in ListOfAthletes
{
  get eventList for a
  for each event in eventList
   get event Name
   //print out athlete Name and event Name
}