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TreeView.ImageKey Property

.NET Framework 4.5

Gets or sets the key of the default image for each node in the TreeView control when it is in an unselected state.

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

'Declaration
<TypeConverterAttribute(GetType(ImageKeyConverter))> _
<RelatedImageListAttribute("ImageList")> _
Public Property ImageKey As String

Property Value

Type: System.String
The key of the default image shown for each node TreeView control when the node is in an unselected state.

Remarks

The ImageKey property is case-insensitive.

If a TreeNode does not have an image set, the image specified by the ImageKey property will be shown when the node is not selected. When the node is selected, the first item in the ImageList will be shown.

The ImageKey and ImageIndex properties are mutually exclusive, meaning if one is set, the other is ignored. If you set the ImageKey property, the ImageIndex property is automatically set to -1. Alternatively, if you set the ImageIndex property, the ImageKey is automatically set to an empty string ("").

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Reference

TreeView Class

System.Windows.Forms Namespace

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