将项目添加到另一个类的ListView [英] Add item to ListView from another class

问题描述

我已经找到了许多有关如何执行此操作的问题，但是似乎都没有.我在主视图上有一个ListView，并且通过从其他表单向其添加数据来填充它.在另一种形式上，我有几个文本字段要传递给它的字符串.这是我的代码:

I've looked up many question on how to do this, but none of them seem to work. I have a ListView on my main view, and I'm populating it from adding data to it from another form. On the other form, I have a couple strings from text fields I'd like to pass to it. Here's my code:

//添加新的预订表格:

// Add new booking form:

namespace Booker
{
  public partial class newBookingForm : Form
{
    public newBookingForm()
    {
        InitializeComponent();
    }

    private void NewBookingForm_Load(object sender, EventArgs e)
    {
        roomField.Focus();
    }

    private void newBookingButton_Click(object sender, EventArgs e)
    {
        // Add to ListView
        // Add to Parse
        string room = this.roomField.Text;
        string date = this.datePicker.Value.ToShortDateString();
        string time = this.timeField.Text;
        string person = "<username>"; // Get current Parse user

        Booker booker = new Booker();
        string[] array = new string[4] { room, date, time, person };
        booker.UpdatingListView(array);

        this.Hide();
    }
}

}

//ListView表单:

// ListView form:

namespace Booker
{
public partial class Booker : Form
{
    delegate void MyDelegate(string[] array);

    public Booker()
    {
        InitializeComponent();
    }

    protected override void OnFormClosing(FormClosingEventArgs e)
    {
        base.OnFormClosing(e);
        Environment.Exit(0);
    }

    private void Booker_Load(object sender, EventArgs e)
    {
        listView.View = View.Details;
        listView.AllowColumnReorder = false;
    }

    /* Methods for the Booker form */

    private void newBookingButton_Click(object sender, EventArgs e)
    {
        newBookingForm nbf = new newBookingForm();
        nbf.Show();
    }

    public void UpdatingListView(string[] array)
    {
        if (this.listView.InvokeRequired)
            this.listView.Invoke(new MyDelegate(UpdatingListView), new object[] { array });
        else
        {
            ListViewItem lvi = new ListViewItem(array[0]);
            lvi.SubItems.Add(array[1]);
            this.listView.Items.Add(lvi);
        }
    }

    private void exitButton_Click(object sender, EventArgs e)
    {
        // Error - no action being sent
    }

    private void helpButton_Click(object sender, EventArgs e)
    {
        // Display help panel
    }

    private void contactButton_Click(object sender, EventArgs e)
    {
        // Open panel/email
    }

    private void newBooking_Click(object sender, EventArgs e)
    {
        newBookingButton_Click(sender, e);

        //string[] row = { "Meeting room", "April 11, 2013", "12:00PM-1:00PM", "Ryan" };
        //var listViewItem = new ListViewItem(row);
        //listView.Items.Add(listViewItem);
    }

推荐答案

要从另一个类添加项目，只需访问另一个类的方法即可从 Program 添加.像这样:

To add items from another class, just access the other class' method to add from Program. Like this:

//我们要添加的类:

string name = "Ryan";
string site = "imryan.net";

string[] array = new string[2] = { name, site };
Program.classWithListView.UpdatingListView(array);

//我们要添加的类:

public void UpdatingListView(string[] array)
    {

        if (this.listView.InvokeRequired)
        {
            this.listView.Invoke(new MyDelegate(UpdatingListView), new object[] { array });

        } else {
            ListViewItem lvi = new ListViewItem(array[0]);
            lvi.SubItems.Add(array[1]);
            lvi.SubItems.Add(array[2]);
            this.listView.Items.Add(lvi);
        }
    }

字符串数组将作为 SubItems 添加到 ListView .

The string array will be added to the ListView as SubItems.

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