Gets or sets the key of the image displayed in the column.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The and ImageIndex properties are mutually exclusive, meaning if one is set, the other is set to an invalid value and ignored.
If is set to an invalid value, an image will not be displayed, and an exception will not be thrown.
The image associated with a ColumnHeader is typically used to indicate the state information.
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.