Gets or sets the key for the image associated with this tree node when the node is in an unselected state.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The is case-insensitive.
The and ImageIndex properties are mutually exclusive; if one property is set, the other is ignored. If you set the property, the ImageIndex property is automatically set to -1. Alternatively, if you set ImageIndex, is automatically set to an empty string ("").
Windows 8.1, Windows Server 2012 R2, 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.