Linking to the property handler

The Property handler for the extension is registered as follows:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\PropertySystem\PropertyHandlers\.cs]  
@="{D06391EE-2FEB-419B-9667-AD160D0849F3}"

The GUID specified by the default value of the key for the file extension is that of the registered property handler service, in this case our own. Note that there can be only one property handler for an extension.