Export (0) Print
Expand All
3 out of 3 rated this helpful - Rate this topic

ListView.ListViewItemCollection Class

Represents the collection of items in a ListView control or assigned to a ListViewGroup.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)
[ListBindableAttribute(false)]
public class ListViewItemCollection : IList, 
	ICollection, IEnumerable

A ListView.ListViewItemCollection stores the items displayed in a ListView control or assigned to a ListViewGroup. There are two other collections defined within the ListView class that enable you to determine what items are selected within a ListView control. The ListView.SelectedListViewItemCollection class provides properties and methods for determining what items are selected in a ListView control, while the ListView.SelectedIndexCollection class enables you to determine what indexes within the ListView.ListViewItemCollection of a ListView control are selected. In addition to selection collection classes, there are also two classes that enable you to determine what items are checked (when the CheckBoxes property of the ListView control is set to true) within this collection.

There are a number of ways to add items to the collection. The Add method adds a single item to the collection. To add a number of items to the collection, you create an array of items and pass it to the AddRange method. If you want to insert an item at a specific location in the collection, you can use the Insert method. To remove items, you can use either the Remove method or the RemoveAt method if you know where the item is located in the collection. The Clear method enables you to remove all items from the collection instead of using the Remove method to remove a single item at a time.

In addition to methods and properties for adding and removing items, the ListView.ListViewItemCollection also provides methods to find items in the collection. The Contains method enables you to determine whether an item is a member of the collection. Once you know that the item is located in the collection, you can use the IndexOf method to determine where the item is located in the collection.

The following code example demonstrates how to add items to a ListView.ListViewItemCollection. Note that the Items property of ListView1 is of type ListView.ListViewItemCollection. To run this example, paste the following code into a form that contains a ListView object named ListView1 and a TextBox named TextBox1. Call the InitializeListView method from the form's constructor or Load event handler.

	// 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);
	}
	
System.Object
  System.Windows.Forms.ListView.ListViewItemCollection
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 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, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0
Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft. All rights reserved.