Use the ImageSource property when the image is unavailable or unknown at the time of application deployment, or to reduce the size of the stream containing the serialized data for the associated tile.
The value of this property can refer to a file path or a URI (uniform resource identifier). When referring to a URI, the UriKind is presumed to be absolute.
Note that a different image source can be provided for high-contrast mode using the HighContrastImageSource property.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2