在比较列表元素和用户输入的字符串时，似乎只比较最后输入的列表元素

我的程序有一个人员列表和一个事件列表，程序的工作是向列表中输入的人出售这些事件的门票。

我是一个舞台，我需要在功能中编程，允许用户选择他们想要购买门票的节目/事件。我决定通过在RichTextBox中显示可用事件并要求用户写下他们想要购买门票的事件名称来做到这一点。如果此事件存在，则程序应提前到客户详细信息表单;如果没有，那么它应该重置输入文本框，并显示一个错误消息给用户-很简单。

然而，由于某种原因，当我尝试搜索列表并将字符串"chosenArtist"与event.getArtist()方法进行比较时，它返回的是没有找到列表中实际存在的项目。它实际返回的唯一项似乎是最后输入的列表项。

例如:

2. 歌手
3. 舞者

比较函数会告诉我小丑和歌手不存在，但舞者存在。

我认为这与我在foreach循环内的代码或事件类的实际代码有关，但我只是不知道。

AddCustomer表单的代码(比较在btnFind_click内完成)

public partial class AddCustomer : Form
{
    //arrayList
    List<Person> personList = new List<Person>();
    List<Events> eventsList = new List<Events>();
    //class
    Person p = new Person();
    Events ev = new Events();
    //variables 
    String chosenArtist;
    //constructors
    public AddCustomer()
    {
        InitializeComponent();
    }
    public AddCustomer(List<Events> eventsList, List<Person> personList)
    {
        InitializeComponent();
        this.personList = personList;
        this.eventsList = eventsList;
    }
    private void btnHome_Click(object sender, EventArgs e)
    {
        formHome home = new formHome();
        this.Hide();
        home.Show();
    }
    private void AddCustomer_Load(object sender, EventArgs e)
    {
        //sets error label text to blank
        lblCustomerError.Text = "";
        //sets display for rich text box
        rtbAddCust.Text = "Events'n";
        foreach (Events ev in eventsList)
        {
            rtbAddCust.AppendText("Artist name: " + ev.getArtist() + "'n" +
                             "Event venue: " + ev.getVenue() + "'n" +
                             "Event date: " + ev.getDate() + "'n" +
                             "Capacity: " + ev.getCapacity() + "'n" +
                             "Price: £" + ev.getPrice() + "'n" +
                             "Remaining tickets: " + ev.getRemaining() + "'n'n");
        }
        //Ensures curser always starts at top of text box
        rtbAddCust.SelectionStart = 0;
        rtbAddCust.ScrollToCaret();
    }
    private void btnFind_Click(object sender, EventArgs e)
    {
        chosenArtist = txtFindArtist.Text;
        foreach(Events ev in eventsList)
        {
            //compares chosen artist to list items to determine if present
            if (ev.getArtist().ToLower().Equals(chosenArtist.ToLower()))
            {
                lblCustomerError.Text = "Artist found";
                //do something
            }
            else
            {
                lblCustomerError.Text = "artist not found";
                txtFindArtist.Clear();
            }
        } 
    }
}

Events类代码

public class Events
{
   private String artist;
   private String venue;
   private String date;
   private String capacity;
   private String remaining;
   private String price;
    public Events() { }
    public Events(String artist, String venue, String date, String capacity, String remaining, String price ) 
    {
        this.artist = artist;
        this.venue = venue;
        this.date = date;
        this.capacity = capacity;
        this.remaining = remaining;
        this.price = price;
    }
    //setters
    public void setArtist(String artist) { this.artist = artist; }
    public void setVenue(String venue) { this.venue = venue; }
    public void setDate(String date) { this.date = date; }
    public void setCapacity(String capacity) { this.capacity = capacity; }
    public void setRemaining(String remaining) { this.remaining = remaining; }
    public void setPrice(String price) { this.price = price; }
    //getters
    public String getArtist() { return artist; }
    public String getVenue() { return venue; }
    public String getDate() { return date; }
    public String getCapacity() { return capacity; }
    public String getRemaining() { return remaining; }
    public String getPrice() { return price; }
    //toString
    public override String ToString() { return artist + " " + venue + " " + date + " " + capacity + " " + remaining + " " + price; }

同样值得注意的是，如果在foreach循环中，我改变了RichTextBox中的文本，只打印出艺术家的名字，这很好。似乎只有当我试图将这些名称与某些东西进行比较时，我才会遇到问题。

private void btnFind_Click(object sender, EventArgs e)
{
    chosenArtist = txtFindArtist.Text;
    foreach(Events ev in eventsList)
    {
        //compares chosen artist to list items to determine if present
        if (ev.getArtist().ToLower().Equals(chosenArtist.ToLower()))
        {
            lblCustomerError.Text = "Artist found";
            //do something
            break;//BREAK FROM LOOP
        }
        else
        {
            lblCustomerError.Text = "artist not found";
            txtFindArtist.Clear();
        }
    } 
}

private void btnFind_Click(object sender, EventArgs e)
{
    chosenArtist = txtFindArtist.Text.ToUpperInvariant;
    var found=false;
    foreach(Events ev in eventsList)
    {
        if (ev.getArtist().ToUpperInvariant().Equals(chosenArtist))
        {
            found=true;
            break;//BREAK FROM LOOP
        }
    } 
    if(found){
        lblCustomerError.Text = "Artist found";
        //Do booking stuff
    }
    else
    {
        lblCustomerError.Text = "Artist not found";
        txtFindArtist.Clear();
    }
}

public Events() { }
public Events(String artist, String venue, String date, String capacity,
                                               String remaining, String price ) 
{
    Artist = artist;
    Venue = venue;
    Date = date;
    Capacity = capacity;
    Remaining = remaining;
    Price = price;
}
public override String ToString()
{ 
    return artist + " " + venue + " " + date + " " + capacity + " " + 
               remaining + " " + price; 
}