ListView.SelectedListViewItemCollection Class
Represents the collection of selected items in a list view control.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
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 Sub InitializeListView() Me.ListView1 = New System.Windows.Forms.ListView Me.ListView1.BackColor = System.Drawing.SystemColors.Control Me.ListView1.Dock = System.Windows.Forms.DockStyle.Top Me.ListView1.Location = New System.Drawing.Point(0, 0) Me.ListView1.Name = "ListView1" Me.ListView1.Size = New System.Drawing.Size(292, 130) Me.ListView1.TabIndex = 0 Me.ListView1.View = System.Windows.Forms.View.Details Me.ListView1.MultiSelect = True Me.ListView1.HideSelection = False ListView1.HeaderStyle = ColumnHeaderStyle.Nonclickable Dim columnHeader1 As New ColumnHeader With columnHeader1 .Text = "Breakfast Item" .TextAlign = HorizontalAlignment.Left .Width = 146 End With Dim columnHeader2 As New ColumnHeader With columnHeader2 .Text = "Price Each" .TextAlign = HorizontalAlignment.Center .Width = 142 End With Me.ListView1.Columns.Add(columnHeader1) Me.ListView1.Columns.Add(columnHeader2) Dim foodList() As String = New String() {"Juice", "Coffee", _ "Cereal & Milk", "Fruit Plate", "Toast & Jelly", _ "Bagel & Cream Cheese"} Dim foodPrice() As String = New String() {"1.09", "1.09", _ "2.19", "2.49", "1.49", "1.49"} Dim count As Integer For count = 0 To foodList.Length - 1 Dim listItem As New ListViewItem(foodList(count)) listItem.SubItems.Add(foodPrice(count)) ListView1.Items.Add(listItem) Next Me.Controls.Add(Me.ListView1) End Sub ... ' Uses the SelectedItems property to retrieve and tally the price ' of the selected menu items. Private Sub ListView1_SelectedIndexChanged_UsingItems _ (ByVal sender As Object, ByVal e As System.EventArgs) _ Handles ListView1.SelectedIndexChanged Dim breakfast As ListView.SelectedListViewItemCollection = _ Me.ListView1.SelectedItems Dim item As ListViewItem Dim price As Double = 0.0 For Each item In breakfast price += Double.Parse(item.SubItems(1).Text) Next ' Output the price to TextBox1. TextBox1.Text = CType(price, String) End Sub
ListView.SelectedItems, ListView.SelectedIndexChanged event,
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.