lastModified property
[This documentation is preliminary and is subject to change.]
Gets the date that the document was last modified, if the document supplies one.
Syntax
HRESULT value = object.get_lastModified(BSTR* p);
Property values
Type: BSTR
the most recent date the document was modified, in the form "MM/DD/YY hh:mm:ss".
Build date: 6/12/2012