从列表框中选择对象，并在另一个列表框中显示相应的对象

Question

我有一个Form1，在其中创建Medic对象并将其添加到listaMedici1。在Form2中，我创建了Pacient对象，并将它们添加到listapacienti2中，并将其发送到Form1。

在Form1中，我有2个列表框：在listbox1_medici中，我显示了Medic对象的列表。 我想做的是，当我从listbox1_medici中选择一个Medic对象时，在listbox2_pacienti中显示所有Pacient对象，这些对象具有字段codM，与所选对象字段codM相同。我已经尝试过这种方法，但是它不起作用。有什么事吗谢谢。

Form1： Button3用于用Medic对象填充listbox1_medici

假定SelectieItem方法和事件SelectedIndexChanged方法显示的Pacient对象与listbox1_medici中选择的Medic对象具有相同的codM，但它们不起作用

public partial class Form1 : Form
    {
        public List<Medic> listaMedici1 = new List<Medic>();
        public List<Pacient> listaPacienti1 = new List<Pacient>();
        public ArrayList specialitati = new ArrayList();

        public Form1()
    {
        InitializeComponent();

        specialitati.Add("Endocrinologie");
        specialitati.Add("Oftalmologie");
        specialitati.Add("Neurologie");
        specialitati.Add("Cardiologie");
        for (int i = 0; i < specialitati.Count; i++)
            comboBox1spec.Items.Add(specialitati[i]);

        Medic m1 = new Medic(1, "Ionescu", "Endocrinologie");
        Medic m2 = new Medic(2, "Popescu", "Cardiologie");
        listaMedici1.Add(m1);
        listaMedici1.Add(m2);



    }


    private void button1_Click(object sender, EventArgs e)
    {//this is where i create objects using the textboxes
    }

    private void button2_Click(object sender, EventArgs e)
    {
        Form2 form = new Form2(listaMedici1);
      //  form.listaMedici2 = listaMedici1;
        form.ShowDialog();
        this.Close();
    }

    private void button3_Click(object sender, EventArgs e)
    {
        foreach (Medic m in listaMedici1)
        {
            if(!(listBox1_medici.Items.Contains(m)))
            {
                listBox1_medici.Items.Add(m.ToString());
            }
        }
    }

    private void SelectieItem(object sender, EventArgs e)
    {
        if(listBox1_medici.SelectedItems.Count==1)
        {
            Medic med = listBox1_medici.SelectedItem as Medic;
            for(int i=0;i<listaPacienti1.Count;i++)
            {
                if(med.CodM==listaPacienti1[i].CodM)
                {
                    listBox2_pacienti.Items.Add(listaPacienti1[i].ToString());
                }
            }
        }
    }

    private void listBox2_pacienti_SelectedIndexChanged(object sender, EventArgs e)
    {
        SelectieItem(sender, e);
    }
}

Form2：

public partial class Form2 : Form
{
    public List<Medic> listaMedici2 = new List<Medic>();
    public List<Pacient> listaPacienti2 = new List<Pacient>();
    Form1 form1;

    public Form2()
    {
        InitializeComponent();

        Pacient p1 = new Pacient(1, "Danut", 2, 230);
        Pacient p2 = new Pacient(2, "Cristi", 1, 120);
        listaPacienti2.Add(p1);
        listaPacienti2.Add(p2);
    }

    public Form2(List<Medic> listaMedici1)
    {
        InitializeComponent();
        listaMedici2 = listaMedici1;
        foreach (Medic med in listaMedici2)
        {
            comboBox1codmed.Items.Add(med.CodM.ToString());
        }
    }


    private void button1_Click(object sender, EventArgs e)
    {//this is where i create Pacient objects using the textboxes
    }

    private void button2_Click(object sender, EventArgs e)
    {
        Form1 frm = new Form1();
        frm.listaPacienti1 = listaPacienti2;
        frm.ShowDialog();
        this.Close();
    }
}