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TreeNode.StateImageKey Property

Gets or sets the key of the image that is used to indicate the state of the TreeNode when the parent TreeView has its CheckBoxes property set to false.

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

[TypeConverterAttribute(typeof(ImageKeyConverter))]
[RelatedImageListAttribute("TreeView.StateImageList")]
public string StateImageKey { get; set; }

Property Value

Type: System.String
The key of the image that is used to indicate the state of the TreeNode.

The image key that is returned by this property is contained in the StateImageList property of the parent TreeView control.

If the parent TreeView has check boxes enabled, the StateImageKey is ignored and the node will display the first or second image in the StateImageList set on the parent TreeView to indicate an unchecked or checked state, respectively. Toggling the Checked property does not affect the value of the StateImageKey.

The StateImageKey and StateImageIndex properties are mutually exclusive, meaning if one is set, the other is ignored. If you set the StateImageKey property, the StateImageIndex property is automatically set to -1. Alternatively, if you set StateImageIndex, StateImageKey is automatically set to an empty string (""). You should set the StateImageKey to an image with a corresponding index between 0 and 14. You can set the StateImageKey to an image with an index value greater than 14 (an exception will not be thrown), but the image may not be displayed

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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