Transform an Excel date value to a CLR DateTime value
                System::DateTime^ toClrDate( double datetime ); System::DateTime^ toClrDate( long date );  | 
            
A numeric date/time value received from Excel.
An integer date value received from Excel.
A CLR object, that may be passed directly to a .NET method, using C++/CLI.
Header: xlpclrconvert.h
Common Language Runtime support functions | toClr | toClrDates