从文本文件填充列表框

Question

我正在制作一本联系簿,试图学习课程,并开设新表格.

我试图从文本文档中获取项目以填充列表框,仅使用每行第一个分隔符之前的字符串.当我运行脚本时,会出现Windows窗体,但列表框是空白的,但其中似乎有五个可选的项目.点击它们没有任何效果.

这是我的表单代码:

namespace AddressBook
    {
public partial class formMain : Form
    {
    //Pub vars
    string selectedName = "";
    List<string> values = new List<string>();

    public formMain()
    {
        InitializeComponent();
    }

    public void formMain_Load (object sender, EventArgs e)
    {
        //load values from file
        try
        {
        StreamReader inputFile;
        inputFile = File.OpenText("EmpRoster.txt");

        string lines;

        while (!inputfile.EndOfSteam)
        {
            lines = inputFile.ReadLine();
            string[] tokens = lines.Split(',');

            PersonEntry person = new PersonEntry(tokens[0], tokens[1], tokens[2]);

            values.Add(person.Name + ";" + person.Email + ";" + person.Phone);

            listOuput.Items.Add(person.Name);
        }
        }

        catch (Exception ex)
        {
        MessageBox.Show(ex.Message);
        }
    }


    //Selected index change
    private void listOutput_SelectedIndexChanged(object sender, EventArgs e)
    {
        selectedName = listOutput.SelectedItem.ToString();
        Form newForm = new Form();

        Label label1 = new Label();
        label1.Size = new Size(270, 75);
        label1.Location = new Point(10, 10);

        foreach (string str in values)
        {
        if (str.Containes(selectedName))
        {
            string[] tokens = str.Split(';');
            label1.text += "Name: " + tokens[0] + "\n" + "Email: " + tokens[1] + "\n" + "Phone Number: " + tokens[2] + "\n";
        }
        }
        newForm.Controls.Add(label1);
        newForm.ShowDialog();
    }
}

这是我的班级代码:

namespace AddressBook
{
    public class PersonEntry
    {
    private string _name;
    private string _email;
    private string _phone;

    public PersonEntry(string name, string email, string phone)
    {
        _name = "";
        _email = "";
        _phone = "";
    }

    public string Name
    {
        get { return _name; }
        set { _name = value; }
    }

    public string Email
    {
        get { return _email; }
        set { _email = value; }
    {

    public string Phone
    {
        get { return _phone; }
        set { _phone = value; }
    }
    }
}

我似乎无法在跑步中看到这个; 但是,我确实尝试添加一个按钮并在点击时填充列表框,这似乎有效.

我很欣赏这一点.

Answer 1

问题在于如何实例化您的类.如果你看一下构造函数:

public PersonEntry(string name, string email, string phone)
{
    _name = "";
    _email = "";
    _phone = "";
}

您不是存储接收的值,而是完全忽略它们.只需将您的课程简化为:

public string Name { get; set; }
public string Email { get; set; }
public string Phone { get; set; }

public PersonEntry(string name, string email, string phone)
{
    Name = name;
    Email = email;
    Phone = phone;
}

您无需生成支持字段,这些字段会自动为您完成.