This documentation is archived and is not being maintained.

ListView.Columns Property

Gets the collection of all column headers that appear in the control.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

'Declaration
Public ReadOnly Property Columns As ListView..::.ColumnHeaderCollection
'Usage
Dim instance As ListView 
Dim value As ListView..::.ColumnHeaderCollection 

value = instance.Columns

Property Value

Type: System.Windows.Forms.ListView.ColumnHeaderCollection
A ListView.ColumnHeaderCollection that represents the column headers that appear when the View property is set to Details.

The Columns property returns a collection containing the ColumnHeader objects that are displayed in the ListView control. ColumnHeader objects define the columns that are displayed in the ListView control when the View property is set to Details. Each column is used to display subitem information for each item in the ListView. For more information on how to manipulate the items in the collection, see ListView.ColumnHeaderCollection.

NoteNote:

If your ListView control does not have any column headers specified and you set the View property to Details, the ListView control will not display any items.

The following code example creates a ListView control with three ListViewItem objects specified and three ListViewItem.ListViewSubItem objects specified for each item. The example also creates ColumnHeader objects to display the subitems in details view. Two ImageList objects are also created in the code example to provide images for the ListViewItem objects. These ImageList objects are added to the LargeImageList and SmallImageList properties. The example uses the following properties in creating the ListView control.

This example requires that you have added the code to a Form and call the method created in the example from the constructor or another method on the form. The example also requires that images named MySmallImage1, MySmallImage2, MyLargeImage1, and MyLargeImage2 are located in the root directory of drive C.

Private Sub CreateMyListView()
    ' Create a new ListView control. 
    Dim listView1 As New ListView()
    listView1.Bounds = New Rectangle(New Point(10, 10), New Size(300, 200))

    ' Set the view to show details.
    listView1.View = View.Details
    ' Allow the user to edit item text.
    listView1.LabelEdit = True 
    ' Allow the user to rearrange columns.
    listView1.AllowColumnReorder = True 
    ' Display check boxes.
    listView1.CheckBoxes = True 
    ' Select the item and subitems when selection is made.
    listView1.FullRowSelect = True 
    ' Display grid lines.
    listView1.GridLines = True 
    ' Sort the items in the list in ascending order.
    listView1.Sorting = SortOrder.Ascending

    ' Create three items and three sets of subitems for each item. 
    Dim item1 As New ListViewItem("item1", 0)
    ' Place a check mark next to the item.
    item1.Checked = True
    item1.SubItems.Add("1")
    item1.SubItems.Add("2")
    item1.SubItems.Add("3")
    Dim item2 As New ListViewItem("item2", 1)
    item2.SubItems.Add("4")
    item2.SubItems.Add("5")
    item2.SubItems.Add("6")
    Dim item3 As New ListViewItem("item3", 0)
    ' Place a check mark next to the item.
    item3.Checked = True
    item3.SubItems.Add("7")
    item3.SubItems.Add("8")
    item3.SubItems.Add("9")

    ' Create columns for the items and subitems.
    listView1.Columns.Add("Item Column", -2, HorizontalAlignment.Left)
    listView1.Columns.Add("Column 2", -2, HorizontalAlignment.Left)
    listView1.Columns.Add("Column 3", -2, HorizontalAlignment.Left)
    listView1.Columns.Add("Column 4", -2, HorizontalAlignment.Center)

    'Add the items to the ListView.
    listView1.Items.AddRange(New ListViewItem() {item1, item2, item3})

    ' Create two ImageList objects. 
    Dim imageListSmall As New ImageList()
    Dim imageListLarge As New ImageList()

    ' Initialize the ImageList objects with bitmaps.
    imageListSmall.Images.Add(Bitmap.FromFile("C:\MySmallImage1.bmp"))
    imageListSmall.Images.Add(Bitmap.FromFile("C:\MySmallImage2.bmp"))
    imageListLarge.Images.Add(Bitmap.FromFile("C:\MyLargeImage1.bmp"))
    imageListLarge.Images.Add(Bitmap.FromFile("C:\MyLargeImage2.bmp"))

    'Assign the ImageList objects to the ListView.
    listView1.LargeImageList = imageListLarge
    listView1.SmallImageList = imageListSmall

    ' Add the ListView to the control collection. 
    Me.Controls.Add(listView1)
End Sub 'CreateMyListView

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
Show: