Hallo!

Could anyone tell me how to convert a time given in a FILETIME structure
during P/Invoke to a DateTime value in VB.NET?
I´ve tried functions like DateTime.FromFileTime(), but what I get does not
match the time that should be it...

Many thanks in advance,

--
Danyel Meyer
-------------------------------------------
dialog-it GmbH
Röllinghäuser Strasse 55a
31061 Alfeld/Leine

Tel +49 (0) 5181 900 814
Fax +49 (0) 5181 900 815
E-Mail danyel.meyer <at> dialog-it.de

Have you tried FromFileTimeUTC() which will convert a time expressed as
universal time (FromFileTime expects a FileTime expressed in the devices
currently set local time)

Peter

--
Peter Foot
Windows Embedded MVP
OpenNETCF.org Senior Advisor
www.inthehand.com | www.opennetcf.org

"Danyel Meyer - dialog-it GmbH dialog-it.de>" <info<at> wrote in message
news:%(E-Mail Removed)...
> Hallo!
>
> Could anyone tell me how to convert a time given in a FILETIME structure
> during P/Invoke to a DateTime value in VB.NET?
> I´ve tried functions like DateTime.FromFileTime(), but what I get does not
> match the time that should be it...
>
> Many thanks in advance,
>
> --
> Danyel Meyer
> -------------------------------------------
> dialog-it GmbH
> Röllinghäuser Strasse 55a
> 31061 Alfeld/Leine
>
> Tel +49 (0) 5181 900 814
> Fax +49 (0) 5181 900 815
> E-Mail danyel.meyer <at> dialog-it.de
>
>

Hallo Peter,

Yes, I´ve already tried this, but it also gives a value that is hundreds of
years behind.
I´ve just tried to use coredll.dll´s FileTimeToSystemTime, because the WinCE
SYSTEMTIME structure looks more usable, but I get a NotSupportedException...

Hope anyone knows a way to get it done...


--
Danyel Meyer
-------------------------------------------
dialog-it GmbH
Röllinghäuser Strasse 55a
31061 Alfeld/Leine

Tel +49 (0) 5181 900 814
Fax +49 (0) 5181 900 815
E-Mail danyel.meyer <at> dialog-it.de

"Peter Foot [MVP]" <(E-Mail Removed)> schrieb im Newsbeitrag
news:(E-Mail Removed)...
> Have you tried FromFileTimeUTC() which will convert a time expressed as
> universal time (FromFileTime expects a FileTime expressed in the devices
> currently set local time)
>
> Peter
>
> --
> Peter Foot
> Windows Embedded MVP
> OpenNETCF.org Senior Advisor
> www.inthehand.com | www.opennetcf.org
>
> "Danyel Meyer - dialog-it GmbH dialog-it.de>" <info<at> wrote in message
> news:%(E-Mail Removed)...
> > Hallo!
> >
> > Could anyone tell me how to convert a time given in a FILETIME structure
> > during P/Invoke to a DateTime value in VB.NET?
> > I´ve tried functions like DateTime.FromFileTime(), but what I get does
not
> > match the time that should be it...
> >
> > Many thanks in advance,
> >
> > --
> > Danyel Meyer
> > -------------------------------------------
> > dialog-it GmbH
> > Röllinghäuser Strasse 55a
> > 31061 Alfeld/Leine
> >
> > Tel +49 (0) 5181 900 814
> > Fax +49 (0) 5181 900 815
> > E-Mail danyel.meyer <at> dialog-it.de
> >
> >
>
>

Okay, it was ByVal where it should have been ByRef... works now, I think I
can use the SYSTEMTIME-structured format.


--
Danyel Meyer
-------------------------------------------
dialog-it GmbH
Röllinghäuser Strasse 55a
31061 Alfeld/Leine

Tel +49 (0) 5181 900 814
Fax +49 (0) 5181 900 815
E-Mail danyel.meyer <at> dialog-it.de

"Danyel Meyer - dialog-it GmbH dialog-it.de>" <info<at> schrieb im
Newsbeitrag news:O%(E-Mail Removed)...
> Hallo Peter,
>
> Yes, I´ve already tried this, but it also gives a value that is hundreds
of
> years behind.
> I´ve just tried to use coredll.dll´s FileTimeToSystemTime, because the
WinCE
> SYSTEMTIME structure looks more usable, but I get a
NotSupportedException...
>
> Hope anyone knows a way to get it done...
>
>
> --
> Danyel Meyer
> -------------------------------------------
> dialog-it GmbH
> Röllinghäuser Strasse 55a
> 31061 Alfeld/Leine
>
> Tel +49 (0) 5181 900 814
> Fax +49 (0) 5181 900 815
> E-Mail danyel.meyer <at> dialog-it.de
>
> "Peter Foot [MVP]" <(E-Mail Removed)> schrieb im Newsbeitrag
> news:(E-Mail Removed)...
> > Have you tried FromFileTimeUTC() which will convert a time expressed as
> > universal time (FromFileTime expects a FileTime expressed in the devices
> > currently set local time)
> >
> > Peter
> >
> > --
> > Peter Foot
> > Windows Embedded MVP
> > OpenNETCF.org Senior Advisor
> > www.inthehand.com | www.opennetcf.org
> >
> > "Danyel Meyer - dialog-it GmbH dialog-it.de>" <info<at> wrote in message
> > news:%(E-Mail Removed)...
> > > Hallo!
> > >
> > > Could anyone tell me how to convert a time given in a FILETIME
structure
> > > during P/Invoke to a DateTime value in VB.NET?
> > > I´ve tried functions like DateTime.FromFileTime(), but what I get does
> not
> > > match the time that should be it...
> > >
> > > Many thanks in advance,
> > >
> > > --
> > > Danyel Meyer
> > > -------------------------------------------
> > > dialog-it GmbH
> > > Röllinghäuser Strasse 55a
> > > 31061 Alfeld/Leine
> > >
> > > Tel +49 (0) 5181 900 814
> > > Fax +49 (0) 5181 900 815
> > > E-Mail danyel.meyer <at> dialog-it.de
> > >
> > >
> >
> >
>
>

struct FILETIME
{
int lo;
int hi;
}

FILETIME ft;
....
DateTime dt = DateTime.FromFileTimeUtc((((long)ft.hi) << 32) | ft.lo);

or in VB

Struct FileTime
Lo as Integer,
Hi as Integer
End Struct

Dim dt as DateTime = DateTime.FromFileTimeUtc( (CLng(ft.Hi) SHL 32) OR
ft.Lo)

"Danyel Meyer - dialog-it GmbH dialog-it.de>" <info<at> wrote in message
news:%(E-Mail Removed)...
> Hallo!
>
> Could anyone tell me how to convert a time given in a FILETIME structure
> during P/Invoke to a DateTime value in VB.NET?
> I´ve tried functions like DateTime.FromFileTime(), but what I get does not
> match the time that should be it...
>
> Many thanks in advance,
>
> --
> Danyel Meyer
> -------------------------------------------
> dialog-it GmbH
> Röllinghäuser Strasse 55a
> 31061 Alfeld/Leine
>
> Tel +49 (0) 5181 900 814
> Fax +49 (0) 5181 900 815
> E-Mail danyel.meyer <at> dialog-it.de
>
>