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ListView.SelectedListViewItemCollection Class

Represents the collection of selected items in a list view control.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

public class SelectedListViewItemCollection : IList, ICollection, IEnumerable
public class SelectedListViewItemCollection implements IList, ICollection, 
	IEnumerable
public class SelectedListViewItemCollection implements IList, ICollection, 
	IEnumerable

A ListView.SelectedListViewItemCollection stores the selected items in a ListView control. The items stored in the ListView.SelectedListViewItemCollection are items contained in the ListView.ListViewItemCollection. The ListView.ListViewItemCollection stores all items displayed in the ListView.

The following table shows an example of how the ListView.ListViewItemCollection stores the items of the ListView as well as their selection states in an example ListView control.

Index

Item

Selection state in the ListView

0

Item1

Unselected

1

Item2

Selected

2

Item3

Unselected

3

Item4

Selected

4

Item5

Selected

Based on the ListView.ListViewItemCollection example in the previous table, the following table demonstrates how the ListView.SelectedListViewItemCollection would appear.

Index

Selected item in the ListViewItemCollection

0

Item2

1

Item4

2

Item5

You can use the properties and methods of this class to perform a variety of tasks with the collection. The Contains method enables you to determine whether an item from the ListView.ListViewItemCollection class is a member of the ListView.SelectedListViewItemCollection. Once you know that the item is in the collection, you can use the IndexOf method to determine the position of the item in the ListView.SelectedListViewItemCollection.

The following code example demonstrates using the SelectedItems, SelectedIndexChanged event, and HeaderStyle members and the ListView.SelectedListViewItemCollection class. To run this example, paste the following code in a form that contains a ListView object named ListView1 and a TextBox named TextBox1. Call the InitializeListView method from the form's constructor or the Load event handler. This example requires that the event handler is correctly associated with the SelectedIndexChanged event

	// 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

System.Object
  System.Windows.Forms.ListView.SelectedListViewItemCollection

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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