ListView.SelectedListViewItemCollection (Clase)

	// This method adds two columns to the ListView, setting the Text 
	// and TextAlign, and Width properties of each ColumnHeader.  The 
	// HeaderStyle property is set to NonClickable since the ColumnClick 
	// event is not handled.  Finally the method adds ListViewItems and 
	// SubItems to each column.
	private void InitializeListView()
	{
		this.ListView1 = new System.Windows.Forms.ListView();
		this.ListView1.BackColor = System.Drawing.SystemColors.Control;
		this.ListView1.Dock = System.Windows.Forms.DockStyle.Top;
		this.ListView1.Location = new System.Drawing.Point(0, 0);
		this.ListView1.Name = "ListView1";
		this.ListView1.Size = new System.Drawing.Size(292, 130);
		this.ListView1.TabIndex = 0;
		this.ListView1.View = System.Windows.Forms.View.Details;
		this.ListView1.MultiSelect = true;
		this.ListView1.HideSelection = false;
		this.ListView1.HeaderStyle = ColumnHeaderStyle.Nonclickable;
		
		ColumnHeader columnHeader1 = new ColumnHeader();
		columnHeader1.Text = "Breakfast Item";
		columnHeader1.TextAlign = HorizontalAlignment.Left;
		columnHeader1.Width = 146;

	 	ColumnHeader columnHeader2 = new ColumnHeader();
		columnHeader2.Text = "Price Each";
		columnHeader2.TextAlign = HorizontalAlignment.Center;
		columnHeader2.Width = 142;

		this.ListView1.Columns.Add(columnHeader1);
		this.ListView1.Columns.Add(columnHeader2);

		string[] foodList = new string[]{"Juice", "Coffee", 
			"Cereal & Milk", "Fruit Plate", "Toast & Jelly", 
			"Bagel & Cream Cheese"};
		string[] foodPrice = new string[]{"1.09", "1.09", "2.19", 
			"2.49", "1.49", "1.49"};
		
		for(int count=0; count < foodList.Length; count++)
		{
			ListViewItem listItem = new ListViewItem(foodList[count]);
			listItem.SubItems.Add(foodPrice[count]);
			ListView1.Items.Add(listItem);
		}
		this.Controls.Add(ListView1);
	}
	


...


	// Uses the SelectedItems property to retrieve and tally the price 
	// of the selected menu items.
	private void ListView1_SelectedIndexChanged_UsingItems(
		object sender, System.EventArgs e)
	{

		ListView.SelectedListViewItemCollection breakfast = 
			this.ListView1.SelectedItems;
		
		double price = 0.0;
		foreach ( ListViewItem item in breakfast )
		{
			price += Double.Parse(item.SubItems[1].Text);
		}

		// Output the price to TextBox1.
		TextBox1.Text = price.ToString();
	}

// This method adds two columns to the ListView, setting the Text 
// and TextAlign, and Width properties of each ColumnHeader.  The 
// HeaderStyle property is set to NonClickable since the ColumnClick 
// event is not handled.  Finally the method adds ListViewItems and 
// SubItems to each column.
private void InitializeListView()
{
    this.listView1 = new System.Windows.Forms.ListView();
    this.listView1.set_BackColor(
        System.Drawing.SystemColors.get_Control());
    this.listView1.set_Dock(System.Windows.Forms.DockStyle.Top);
    this.listView1.set_Location(new System.Drawing.Point(0, 0));
    this.listView1.set_Name("listView1");
    this.listView1.set_Size(new System.Drawing.Size(292, 130));
    this.listView1.set_TabIndex(0);
    this.listView1.set_View(System.Windows.Forms.View.Details);
    this.listView1.set_MultiSelect(true);
    this.listView1.set_HideSelection(false);
    this.listView1.set_HeaderStyle(ColumnHeaderStyle.Nonclickable);

    ColumnHeader columnHeader1 = new ColumnHeader();
    columnHeader1.set_Text("Breakfast Item");
    columnHeader1.set_TextAlign(HorizontalAlignment.Left);
    columnHeader1.set_Width(146);

    ColumnHeader columnHeader2 = new ColumnHeader();
    columnHeader2.set_Text("Price Each");
    columnHeader2.set_TextAlign(HorizontalAlignment.Center);
    columnHeader2.set_Width(142);

    this.listView1.get_Columns().Add(columnHeader1);
    this.listView1.get_Columns().Add(columnHeader2);

    String foodList[] = new String[] { "Juice", "Coffee", "Cereal & Milk",
        "Fruit Plate", "Toast & Jelly", "Bagel & Cream Cheese" };
    String foodPrice[] = new String[] { "1.09", "1.09", "2.19", "2.49",
        "1.49", "1.49" };

    for (int count = 0; count < foodList.get_Length(); count++) {
        ListViewItem listItem = new ListViewItem(
            foodList.get_Item(count).ToString());
        listItem.get_SubItems().Add(foodPrice.get_Item(count).ToString());
        listView1.get_Items().Add(listItem);
    }
    this.get_Controls().Add(listView1);
} //InitializeListView


...


// Uses the SelectedItems property to retrieve and tally the price 
// of the selected menu items.
private void listView1_SelectedIndexChanged_UsingItems(Object sender, 
    System.EventArgs e)
{
    ListView.SelectedListViewItemCollection breakfast = 
        this.listView1.get_SelectedItems();

    double price = 0.0;
    for (int iCtr = 0; iCtr < breakfast.get_Count(); iCtr++) {
        ListViewItem item = breakfast.get_Item(iCtr);
        price += System.Double.Parse(item.get_SubItems().get_Item(1).
            get_Text().ToString());
    }
    // Output the price to textBox1.
    textBox1.set_Text(System.Convert.ToString(price));
} //listView1_SelectedIndexChanged_UsingItems