can DotNet read and/or write exif

[Frank]

I see that ImageFormat includes exif.

But I can't find out if

I've System.Drawing. Image.FromStrea m

or something like it

can read and/or write that format.



I'm familiar with Q316563 but it does not mention exif



Thanks in advance

[Michael Phillips, Jr.]

Re: can DotNet read and/or write exif

The MSDN site has information that may help you here:

http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx

Since gdiplus is old (i.e., the only version ever released was version 1.0),
it does not support all of the EXIF image tags.

A more robust solution is to use the COM Interfaces IStorage,
IPropertySetSto rage, etc.

These interfaces will allow you to read and write all EXIF image tags, as
well as, all metadata for video, music, compound documents, etc.

See the MSDN online site for details. There ares no .Net classes or methods
implemented. You must implement these interfaces yourself.


" Frank" <frank@a-znet.comwrote in message
news:uZ%23gdhLT HHA.3996@TK2MSF TNGP04.phx.gbl. ..

>I see that ImageFormat includes exif.
>
But I can't find out if
>
I've System.Drawing. Image.FromStrea m
>
or something like it
>
can read and/or write that format.
>
>
>
I'm familiar with Q316563 but it does not mention exif
>
>
>
Thanks in advance
>
>
>
>

[Frank]

Re: can DotNet read and/or write exif

In Dotnet there is an ImageFormat.Exi f Property.

What is that for?

Thanks


"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
news:ef5YPITTHH A.4028@TK2MSFTN GP03.phx.gbl...

The MSDN site has information that may help you here:

http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx

>
Since gdiplus is old (i.e., the only version ever released was version
1.0), it does not support all of the EXIF image tags.
>
A more robust solution is to use the COM Interfaces IStorage,
IPropertySetSto rage, etc.
>
These interfaces will allow you to read and write all EXIF image tags, as
well as, all metadata for video, music, compound documents, etc.
>
See the MSDN online site for details. There ares no .Net classes or
methods implemented. You must implement these interfaces yourself.
>
>
" Frank" <frank@a-znet.comwrote in message
news:uZ%23gdhLT HHA.3996@TK2MSF TNGP04.phx.gbl. ..

>>I see that ImageFormat includes exif.
>>
>But I can't find out if
>>
>I've System.Drawing. Image.FromStrea m
>>
>or something like it
>>
>can read and/or write that format.
>>
>>
>>
>I'm familiar with Q316563 but it does not mention exif
>>
>>
>>
>Thanks in advance
>>
>>
>>
>>

>
>

[Michael Phillips, Jr.]

Re: can DotNet read and/or write exif

In Dotnet there is an ImageFormat.Exi f Property.

>
What is that for?

It just lets you know that EXIF metadata is present.


" Frank" <frank@a-znet.comwrote in message
news:OfS%23uQTT HHA.2256@TK2MSF TNGP02.phx.gbl. ..

In Dotnet there is an ImageFormat.Exi f Property.
>
What is that for?
>
Thanks
>
>
"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
news:ef5YPITTHH A.4028@TK2MSFTN GP03.phx.gbl...

>The MSDN site has information that may help you here:
>http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx
>>
>Since gdiplus is old (i.e., the only version ever released was version
>1.0), it does not support all of the EXIF image tags.
>>
>A more robust solution is to use the COM Interfaces IStorage,
>IPropertySetSt orage, etc.
>>
>These interfaces will allow you to read and write all EXIF image tags, as
>well as, all metadata for video, music, compound documents, etc.
>>
>See the MSDN online site for details. There ares no .Net classes or
>methods implemented. You must implement these interfaces yourself.
>>
>>
>" Frank" <frank@a-znet.comwrote in message
>news:uZ%23gdhL THHA.3996@TK2MS FTNGP04.phx.gbl ...

>>>I see that ImageFormat includes exif.
>>>
>>But I can't find out if
>>>
>>I've System.Drawing. Image.FromStrea m
>>>
>>or something like it
>>>
>>can read and/or write that format.
>>>
>>>
>>>
>>I'm familiar with Q316563 but it does not mention exif
>>>
>>>
>>>
>>Thanks in advance
>>>
>>>
>>>
>>>

>>
>>

>
>

[Frank]

Re: can DotNet read and/or write exif

It does NOT relate to a file extension - like maybe- *.EXIF
True?
thanks again

"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
news:%23y6CxcTT HHA.1600@TK2MSF TNGP05.phx.gbl. ..

>In Dotnet there is an ImageFormat.Exi f Property.
>>
>What is that for?

>
It just lets you know that EXIF metadata is present.
>
>
" Frank" <frank@a-znet.comwrote in message
news:OfS%23uQTT HHA.2256@TK2MSF TNGP02.phx.gbl. ..

>In Dotnet there is an ImageFormat.Exi f Property.
>>
>What is that for?
>>
>Thanks
>>
>>
>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
>news:ef5YPITTH HA.4028@TK2MSFT NGP03.phx.gbl.. .

>>The MSDN site has information that may help you here:
>>http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx
>>>
>>Since gdiplus is old (i.e., the only version ever released was version
>>1.0), it does not support all of the EXIF image tags.
>>>
>>A more robust solution is to use the COM Interfaces IStorage,
>>IPropertySetS torage, etc.
>>>
>>These interfaces will allow you to read and write all EXIF image tags,
>>as well as, all metadata for video, music, compound documents, etc.
>>>
>>See the MSDN online site for details. There ares no .Net classes or
>>methods implemented. You must implement these interfaces yourself.
>>>
>>>
>>" Frank" <frank@a-znet.comwrote in message
>>news:uZ%23gdh LTHHA.3996@TK2M SFTNGP04.phx.gb l...
>>>>I see that ImageFormat includes exif.
>>>>
>>>But I can't find out if
>>>>
>>>I've System.Drawing. Image.FromStrea m
>>>>
>>>or something like it
>>>>
>>>can read and/or write that format.
>>>>
>>>>
>>>>
>>>I'm familiar with Q316563 but it does not mention exif
>>>>
>>>>
>>>>
>>>Thanks in advance
>>>>
>>>>
>>>>
>>>>
>>>
>>>

>>
>>

>
>

[RobinS]

Re: can DotNet read and/or write exif

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdrawingimagingimageformatmemberstopic.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdrawingimagingimageformatclassexiftopic.asp

You could always just try it and see if it works.


Robin S.
Ts'i mahnu uterna ot twan ot geifur hingts uto.
-----------------------------------------------
" Frank" <frank@a-znet.comwrote in message
news:ekFQWuTTHH A.5012@TK2MSFTN GP04.phx.gbl...

It does NOT relate to a file extension - like maybe- *.EXIF
True?
thanks again
>
"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
news:%23y6CxcTT HHA.1600@TK2MSF TNGP05.phx.gbl. ..

>>In Dotnet there is an ImageFormat.Exi f Property.
>>>
>>What is that for?

>>
>It just lets you know that EXIF metadata is present.
>>
>>
>" Frank" <frank@a-znet.comwrote in message
>news:OfS%23uQT THHA.2256@TK2MS FTNGP02.phx.gbl ...

>>In Dotnet there is an ImageFormat.Exi f Property.
>>>
>>What is that for?
>>>
>>Thanks
>>>
>>>
>>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
>>news:ef5YPITT HHA.4028@TK2MSF TNGP03.phx.gbl. ..
>>>The MSDN site has information that may help you here:
>>>http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx
>>>>
>>>Since gdiplus is old (i.e., the only version ever released was version
>>>1.0), it does not support all of the EXIF image tags.
>>>>
>>>A more robust solution is to use the COM Interfaces IStorage,
>>>IPropertySet Storage, etc.
>>>>
>>>These interfaces will allow you to read and write all EXIF image tags,
>>>as well as, all metadata for video, music, compound documents, etc.
>>>>
>>>See the MSDN online site for details. There ares no .Net classes or
>>>methods implemented. You must implement these interfaces yourself.
>>>>
>>>>
>>>" Frank" <frank@a-znet.comwrote in message
>>>news:uZ%23gd hLTHHA.3996@TK2 MSFTNGP04.phx.g bl...
>>>>>I see that ImageFormat includes exif.
>>>>>
>>>>But I can't find out if
>>>>>
>>>>I've System.Drawing. Image.FromStrea m
>>>>>
>>>>or something like it
>>>>>
>>>>can read and/or write that format.
>>>>>
>>>>>
>>>>>
>>>>I'm familiar with Q316563 but it does not mention exif
>>>>>
>>>>>
>>>>>
>>>>Thanks in advance
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>

>>
>>

>
>

[Frank]

Re: can DotNet read and/or write exif

Try what?
I wanted to try to read such a file but searched my entire disk and couldn't
find one.
I'll look at the sites now.

Thanks

"RobinS" <RobinS@NoSpam. yah.nonewrote in message
news:I6mdncigx9 86kFPYnZ2dnUVZ_ uuqnZ2d@comcast .com...

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdrawingimagingimageformatmemberstopic.asp

>

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdrawingimagingimageformatclassexiftopic.asp

>
You could always just try it and see if it works.
>
>
Robin S.
Ts'i mahnu uterna ot twan ot geifur hingts uto.
-----------------------------------------------
" Frank" <frank@a-znet.comwrote in message
news:ekFQWuTTHH A.5012@TK2MSFTN GP04.phx.gbl...

>It does NOT relate to a file extension - like maybe- *.EXIF
>True?
>thanks again
>>
>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
>news:%23y6CxcT THHA.1600@TK2MS FTNGP05.phx.gbl ...

>>>In Dotnet there is an ImageFormat.Exi f Property.
>>>>
>>>What is that for?
>>>
>>It just lets you know that EXIF metadata is present.
>>>
>>>
>>" Frank" <frank@a-znet.comwrote in message
>>news:OfS%23uQ TTHHA.2256@TK2M SFTNGP02.phx.gb l...
>>>In Dotnet there is an ImageFormat.Exi f Property.
>>>>
>>>What is that for?
>>>>
>>>Thanks
>>>>
>>>>
>>>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
>>>news:ef5YPIT THHA.4028@TK2MS FTNGP03.phx.gbl ...
>>>>The MSDN site has information that may help you here:
>>>>http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx
>>>>>
>>>>Since gdiplus is old (i.e., the only version ever released was version
>>>>1.0), it does not support all of the EXIF image tags.
>>>>>
>>>>A more robust solution is to use the COM Interfaces IStorage,
>>>>IPropertySe tStorage, etc.
>>>>>
>>>>These interfaces will allow you to read and write all EXIF image tags,
>>>>as well as, all metadata for video, music, compound documents, etc.
>>>>>
>>>>See the MSDN online site for details. There ares no .Net classes or
>>>>methods implemented. You must implement these interfaces yourself.
>>>>>
>>>>>
>>>>" Frank" <frank@a-znet.comwrote in message
>>>>news:uZ%23g dhLTHHA.3996@TK 2MSFTNGP04.phx. gbl...
>>>>>>I see that ImageFormat includes exif.
>>>>>>
>>>>>But I can't find out if
>>>>>>
>>>>>I've System.Drawing. Image.FromStrea m
>>>>>>
>>>>>or something like it
>>>>>>
>>>>>can read and/or write that format.
>>>>>>
>>>>>>
>>>>>>
>>>>>I'm familiar with Q316563 but it does not mention exif
>>>>>>
>>>>>>
>>>>>>
>>>>>Thanks in advance
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>

>>
>>

>
>

[Frank]

Re: can DotNet read and/or write exif

I checked the sites but they had the same info as my VS help. As I said in
my post, I knew it was an image format property. All the other properties
relate to file extensions.

What I don't know is if exif also relates to an extension.


Does it?

Thanks




"RobinS" <RobinS@NoSpam. yah.nonewrote in message
news:I6mdncigx9 86kFPYnZ2dnUVZ_ uuqnZ2d@comcast .com...

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdrawingimagingimageformatmemberstopic.asp

>

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdrawingimagingimageformatclassexiftopic.asp

>
You could always just try it and see if it works.
>
>
Robin S.
Ts'i mahnu uterna ot twan ot geifur hingts uto.
-----------------------------------------------
" Frank" <frank@a-znet.comwrote in message
news:ekFQWuTTHH A.5012@TK2MSFTN GP04.phx.gbl...

>It does NOT relate to a file extension - like maybe- *.EXIF
>True?
>thanks again
>>
>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
>news:%23y6CxcT THHA.1600@TK2MS FTNGP05.phx.gbl ...

>>>In Dotnet there is an ImageFormat.Exi f Property.
>>>>
>>>What is that for?
>>>
>>It just lets you know that EXIF metadata is present.
>>>
>>>
>>" Frank" <frank@a-znet.comwrote in message
>>news:OfS%23uQ TTHHA.2256@TK2M SFTNGP02.phx.gb l...
>>>In Dotnet there is an ImageFormat.Exi f Property.
>>>>
>>>What is that for?
>>>>
>>>Thanks
>>>>
>>>>
>>>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
>>>news:ef5YPIT THHA.4028@TK2MS FTNGP03.phx.gbl ...
>>>>The MSDN site has information that may help you here:
>>>>http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx
>>>>>
>>>>Since gdiplus is old (i.e., the only version ever released was version
>>>>1.0), it does not support all of the EXIF image tags.
>>>>>
>>>>A more robust solution is to use the COM Interfaces IStorage,
>>>>IPropertySe tStorage, etc.
>>>>>
>>>>These interfaces will allow you to read and write all EXIF image tags,
>>>>as well as, all metadata for video, music, compound documents, etc.
>>>>>
>>>>See the MSDN online site for details. There ares no .Net classes or
>>>>methods implemented. You must implement these interfaces yourself.
>>>>>
>>>>>
>>>>" Frank" <frank@a-znet.comwrote in message
>>>>news:uZ%23g dhLTHHA.3996@TK 2MSFTNGP04.phx. gbl...
>>>>>>I see that ImageFormat includes exif.
>>>>>>
>>>>>But I can't find out if
>>>>>>
>>>>>I've System.Drawing. Image.FromStrea m
>>>>>>
>>>>>or something like it
>>>>>>
>>>>>can read and/or write that format.
>>>>>>
>>>>>>
>>>>>>
>>>>>I'm familiar with Q316563 but it does not mention exif
>>>>>>
>>>>>>
>>>>>>
>>>>>Thanks in advance
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>

>>
>>

>
>

[RobinS]

Re: can DotNet read and/or write exif

Here's the first link from googling "exif files".

http://park2.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html

which leads to this:

http://www.leadtools.com/SDK/Raster/Formats/Raster-Format-EXIF.htm

which says their tool "reads and writes the following Exit format: TIFF and
JPG."

Here's the next link which talks about a Jpeg Header and Thumbnail
Manipulator Program, and lists things they can extract from an Exif jpeg
file.

http://www.sentex.net/~mwandel/jhead/

Google is your friend.

So try opening a jpeg and check the ImageFormat.exi f property and see if
it's true, and if so, the exif metadata is present, that would be my guess.

Robin S.
Ts'i mahnu uterna ot twan ot geifur hingts uto.
-----------------------------------------------
" Frank" <frank@a-znet.comwrote in message
news:u0ZYsVUTHH A.4872@TK2MSFTN GP03.phx.gbl...

>I checked the sites but they had the same info as my VS help. As I said in
>my post, I knew it was an image format property. All the other properties
>relate to file extensions.
>
What I don't know is if exif also relates to an extension.
>
>
Does it?
>
Thanks
>
>
>
>
"RobinS" <RobinS@NoSpam. yah.nonewrote in message
news:I6mdncigx9 86kFPYnZ2dnUVZ_ uuqnZ2d@comcast .com...

>http://msdn.microsoft.com/library/de...mberstopic.asp
>>
>http://msdn.microsoft.com/library/de...sexiftopic.asp
>>
>You could always just try it and see if it works.
>>
>>
>Robin S.
>Ts'i mahnu uterna ot twan ot geifur hingts uto.
>-----------------------------------------------
>" Frank" <frank@a-znet.comwrote in message
>news:ekFQWuTTH HA.5012@TK2MSFT NGP04.phx.gbl.. .

>>It does NOT relate to a file extension - like maybe- *.EXIF
>>True?
>>thanks again
>>>
>>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
>>news:%23y6Cxc TTHHA.1600@TK2M SFTNGP05.phx.gb l...
>>>>In Dotnet there is an ImageFormat.Exi f Property.
>>>>>
>>>>What is that for?
>>>>
>>>It just lets you know that EXIF metadata is present.
>>>>
>>>>
>>>" Frank" <frank@a-znet.comwrote in message
>>>news:OfS%23u QTTHHA.2256@TK2 MSFTNGP02.phx.g bl...
>>>>In Dotnet there is an ImageFormat.Exi f Property.
>>>>>
>>>>What is that for?
>>>>>
>>>>Thanks
>>>>>
>>>>>
>>>>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in
>>>>message news:ef5YPITTHH A.4028@TK2MSFTN GP03.phx.gbl...
>>>>>The MSDN site has information that may help you here:
>>>>>http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx
>>>>>>
>>>>>Since gdiplus is old (i.e., the only version ever released was
>>>>>version 1.0), it does not support all of the EXIF image tags.
>>>>>>
>>>>>A more robust solution is to use the COM Interfaces IStorage,
>>>>>IPropertyS etStorage, etc.
>>>>>>
>>>>>These interfaces will allow you to read and write all EXIF image
>>>>>tags, as well as, all metadata for video, music, compound documents,
>>>>>etc.
>>>>>>
>>>>>See the MSDN online site for details. There ares no .Net classes or
>>>>>methods implemented. You must implement these interfaces yourself.
>>>>>>
>>>>>>
>>>>>" Frank" <frank@a-znet.comwrote in message
>>>>>news:uZ%23 gdhLTHHA.3996@T K2MSFTNGP04.phx .gbl...
>>>>>>>I see that ImageFormat includes exif.
>>>>>>>
>>>>>>But I can't find out if
>>>>>>>
>>>>>>I've System.Drawing. Image.FromStrea m
>>>>>>>
>>>>>>or something like it
>>>>>>>
>>>>>>can read and/or write that format.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>I'm familiar with Q316563 but it does not mention exif
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>Thanks in advance
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>

>>
>>

>
>

[Frank]

Re: can DotNet read and/or write exif

at those sties I see things like: Exif Formats (TIFF and JPG) and so I keep
asking the same question:
Is exif a file extension or something that relates to files with other
extensions.

Is it used as a file extension yes or no?


As far as using Google, I get so many hits I must have looked at a hundred
sites but never there nor here found out the answer to my question.

I did find some great info about extracting exif data that I had no idea
some files have.


thanks for trying to help


"RobinS" <RobinS@NoSpam. yah.nonewrote in message
news:KrqdndpEwu H8hFPYnZ2dnUVZ_ uGjnZ2d@comcast .com...

Here's the first link from googling "exif files".
>

http://park2.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html

>
which leads to this:
>

http://www.leadtools.com/SDK/Raster/Formats/Raster-Format-EXIF.htm

>
which says their tool "reads and writes the following Exit format: TIFF
and JPG."
>
Here's the next link which talks about a Jpeg Header and Thumbnail
Manipulator Program, and lists things they can extract from an Exif jpeg
file.
>

http://www.sentex.net/~mwandel/jhead/

>
Google is your friend.
>
So try opening a jpeg and check the ImageFormat.exi f property and see if
it's true, and if so, the exif metadata is present, that would be my
guess.
>
Robin S.
Ts'i mahnu uterna ot twan ot geifur hingts uto.
-----------------------------------------------
" Frank" <frank@a-znet.comwrote in message
news:u0ZYsVUTHH A.4872@TK2MSFTN GP03.phx.gbl...

>>I checked the sites but they had the same info as my VS help. As I said in
>>my post, I knew it was an image format property. All the other properties
>>relate to file extensions.
>>
>What I don't know is if exif also relates to an extension.
>>
>>
>Does it?
>>
>Thanks
>>
>>
>>
>>
>"RobinS" <RobinS@NoSpam. yah.nonewrote in message
>news:I6mdncigx 986kFPYnZ2dnUVZ _uuqnZ2d@comcas t.com...

>>http://msdn.microsoft.com/library/de...mberstopic.asp
>>>
>>http://msdn.microsoft.com/library/de...sexiftopic.asp
>>>
>>You could always just try it and see if it works.
>>>
>>>
>>Robin S.
>>Ts'i mahnu uterna ot twan ot geifur hingts uto.
>>-----------------------------------------------
>>" Frank" <frank@a-znet.comwrote in message
>>news:ekFQWuTT HHA.5012@TK2MSF TNGP04.phx.gbl. ..
>>>It does NOT relate to a file extension - like maybe- *.EXIF
>>>True?
>>>thanks again
>>>>
>>>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
>>>news:%23y6Cx cTTHHA.1600@TK2 MSFTNGP05.phx.g bl...
>>>>>In Dotnet there is an ImageFormat.Exi f Property.
>>>>>>
>>>>>What is that for?
>>>>>
>>>>It just lets you know that EXIF metadata is present.
>>>>>
>>>>>
>>>>" Frank" <frank@a-znet.comwrote in message
>>>>news:OfS%23 uQTTHHA.2256@TK 2MSFTNGP02.phx. gbl...
>>>>>In Dotnet there is an ImageFormat.Exi f Property.
>>>>>>
>>>>>What is that for?
>>>>>>
>>>>>Thanks
>>>>>>
>>>>>>
>>>>>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in
>>>>>message news:ef5YPITTHH A.4028@TK2MSFTN GP03.phx.gbl...
>>>>>>The MSDN site has information that may help you here:
>>>>>>http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx
>>>>>>>
>>>>>>Since gdiplus is old (i.e., the only version ever released was
>>>>>>version 1.0), it does not support all of the EXIF image tags.
>>>>>>>
>>>>>>A more robust solution is to use the COM Interfaces IStorage,
>>>>>>IProperty SetStorage, etc.
>>>>>>>
>>>>>>These interfaces will allow you to read and write all EXIF image
>>>>>>tags, as well as, all metadata for video, music, compound documents,
>>>>>>etc.
>>>>>>>
>>>>>>See the MSDN online site for details. There ares no .Net classes or
>>>>>>methods implemented. You must implement these interfaces yourself.
>>>>>>>
>>>>>>>
>>>>>>" Frank" <frank@a-znet.comwrote in message
>>>>>>news:uZ%2 3gdhLTHHA.3996@ TK2MSFTNGP04.ph x.gbl...
>>>>>>>>I see that ImageFormat includes exif.
>>>>>>>>
>>>>>>>But I can't find out if
>>>>>>>>
>>>>>>>I've System.Drawing. Image.FromStrea m
>>>>>>>>
>>>>>>>or something like it
>>>>>>>>
>>>>>>>can read and/or write that format.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>I'm familiar with Q316563 but it does not mention exif
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>Thanks in advance
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>

>>
>>

>
>

[Michael Phillips, Jr.]

Re: can DotNet read and/or write exif

EXIF is a specification. Read about here:

http://www.exif.org/specifications.html

" Frank" <frank@a-znet.comwrote in message
news:ekFQWuTTHH A.5012@TK2MSFTN GP04.phx.gbl...

It does NOT relate to a file extension - like maybe- *.EXIF
True?
thanks again
>
"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
news:%23y6CxcTT HHA.1600@TK2MSF TNGP05.phx.gbl. ..

>>In Dotnet there is an ImageFormat.Exi f Property.
>>>
>>What is that for?

>>
>It just lets you know that EXIF metadata is present.
>>
>>
>" Frank" <frank@a-znet.comwrote in message
>news:OfS%23uQT THHA.2256@TK2MS FTNGP02.phx.gbl ...

>>In Dotnet there is an ImageFormat.Exi f Property.
>>>
>>What is that for?
>>>
>>Thanks
>>>
>>>
>>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
>>news:ef5YPITT HHA.4028@TK2MSF TNGP03.phx.gbl. ..
>>>The MSDN site has information that may help you here:
>>>http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx
>>>>
>>>Since gdiplus is old (i.e., the only version ever released was version
>>>1.0), it does not support all of the EXIF image tags.
>>>>
>>>A more robust solution is to use the COM Interfaces IStorage,
>>>IPropertySet Storage, etc.
>>>>
>>>These interfaces will allow you to read and write all EXIF image tags,
>>>as well as, all metadata for video, music, compound documents, etc.
>>>>
>>>See the MSDN online site for details. There ares no .Net classes or
>>>methods implemented. You must implement these interfaces yourself.
>>>>
>>>>
>>>" Frank" <frank@a-znet.comwrote in message
>>>news:uZ%23gd hLTHHA.3996@TK2 MSFTNGP04.phx.g bl...
>>>>>I see that ImageFormat includes exif.
>>>>>
>>>>But I can't find out if
>>>>>
>>>>I've System.Drawing. Image.FromStrea m
>>>>>
>>>>or something like it
>>>>>
>>>>can read and/or write that format.
>>>>>
>>>>>
>>>>>
>>>>I'm familiar with Q316563 but it does not mention exif
>>>>>
>>>>>
>>>>>
>>>>Thanks in advance
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>

>>
>>

>
>

[Bruce W. Darby]

Re: can DotNet read and/or write exif

Frank,

I'm hoping that this information is what you need, but it appears to be so
by the questions you have asked on this subject.

Exif is shorthand for Exchangeable Image Format. It is not an graphic type,
such as .jpg or .tif. The Exif is a format whereby header information is
stored in the graphic for later access during program runtime. Therefore, in
answer to your question, it is NOT a file extension, but a format that helps
you RELATE to other file extensions.

Bruce

" Frank" <frank@a-znet.comwrote in message
news:eBw3ByUTHH A.4028@TK2MSFTN GP03.phx.gbl...

at those sties I see things like: Exif Formats (TIFF and JPG) and so I
keep asking the same question:
Is exif a file extension or something that relates to files with other
extensions.
>
Is it used as a file extension yes or no?
>
>
As far as using Google, I get so many hits I must have looked at a hundred
sites but never there nor here found out the answer to my question.
>
I did find some great info about extracting exif data that I had no idea
some files have.
>
>
thanks for trying to help
>
>
"RobinS" <RobinS@NoSpam. yah.nonewrote in message
news:KrqdndpEwu H8hFPYnZ2dnUVZ_ uGjnZ2d@comcast .com...

>Here's the first link from googling "exif files".
>>
>http://park2.wakwak.com/~tsuruzoh/Co...ms/exif-e.html
>>
>which leads to this:
>>
>http://www.leadtools.com/SDK/Raster/...ormat-EXIF.htm
>>
>which says their tool "reads and writes the following Exit format: TIFF
>and JPG."
>>
>Here's the next link which talks about a Jpeg Header and Thumbnail
>Manipulator Program, and lists things they can extract from an Exif jpeg
>file.
>>
>http://www.sentex.net/~mwandel/jhead/
>>
>Google is your friend.
>>
>So try opening a jpeg and check the ImageFormat.exi f property and see if
>it's true, and if so, the exif metadata is present, that would be my
>guess.
>>
>Robin S.
>Ts'i mahnu uterna ot twan ot geifur hingts uto.
>-----------------------------------------------
>" Frank" <frank@a-znet.comwrote in message
>news:u0ZYsVUTH HA.4872@TK2MSFT NGP03.phx.gbl.. .

>>>I checked the sites but they had the same info as my VS help. As I said
>>>in my post, I knew it was an image format property. All the other
>>>properties relate to file extensions.
>>>
>>What I don't know is if exif also relates to an extension.
>>>
>>>
>>Does it?
>>>
>>Thanks
>>>
>>>
>>>
>>>
>>"RobinS" <RobinS@NoSpam. yah.nonewrote in message
>>news:I6mdncig x986kFPYnZ2dnUV Z_uuqnZ2d@comca st.com...
>>>http://msdn.microsoft.com/library/de...mberstopic.asp
>>>>
>>>http://msdn.microsoft.com/library/de...sexiftopic.asp
>>>>
>>>You could always just try it and see if it works.
>>>>
>>>>
>>>Robin S.
>>>Ts'i mahnu uterna ot twan ot geifur hingts uto.
>>>-----------------------------------------------
>>>" Frank" <frank@a-znet.comwrote in message
>>>news:ekFQWuT THHA.5012@TK2MS FTNGP04.phx.gbl ...
>>>>It does NOT relate to a file extension - like maybe- *.EXIF
>>>>True?
>>>>thanks again
>>>>>
>>>>"Michael Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in message
>>>>news:%23y6C xcTTHHA.1600@TK 2MSFTNGP05.phx. gbl...
>>>>>>In Dotnet there is an ImageFormat.Exi f Property.
>>>>>>>
>>>>>>What is that for?
>>>>>>
>>>>>It just lets you know that EXIF metadata is present.
>>>>>>
>>>>>>
>>>>>" Frank" <frank@a-znet.comwrote in message
>>>>>news:OfS%2 3uQTTHHA.2256@T K2MSFTNGP02.phx .gbl...
>>>>>>In Dotnet there is an ImageFormat.Exi f Property.
>>>>>>>
>>>>>>What is that for?
>>>>>>>
>>>>>>Thanks
>>>>>>>
>>>>>>>
>>>>>>"Michae l Phillips, Jr." <mphillips53@no spam.jun0.c0mwr ote in
>>>>>>message news:ef5YPITTHH A.4028@TK2MSFTN GP03.phx.gbl...
>>>>>>>The MSDN site has information that may help you here:
>>>>>>>http://msdn2.microsoft.com/en-us/library/xddt0dz7.aspx
>>>>>>>>
>>>>>>>Since gdiplus is old (i.e., the only version ever released was
>>>>>>>versio n 1.0), it does not support all of the EXIF image tags.
>>>>>>>>
>>>>>>>A more robust solution is to use the COM Interfaces IStorage,
>>>>>>>IPropert ySetStorage, etc.
>>>>>>>>
>>>>>>>These interfaces will allow you to read and write all EXIF image
>>>>>>>tags, as well as, all metadata for video, music, compound
>>>>>>>document s, etc.
>>>>>>>>
>>>>>>>See the MSDN online site for details. There ares no .Net classes
>>>>>>>or methods implemented. You must implement these interfaces
>>>>>>>yourself .
>>>>>>>>
>>>>>>>>
>>>>>>>" Frank" <frank@a-znet.comwrote in message
>>>>>>>news:uZ% 23gdhLTHHA.3996 @TK2MSFTNGP04.p hx.gbl...
>>>>>>>>>I see that ImageFormat includes exif.
>>>>>>>>>
>>>>>>>>But I can't find out if
>>>>>>>>>
>>>>>>>>I've System.Drawing. Image.FromStrea m
>>>>>>>>>
>>>>>>>>or something like it
>>>>>>>>>
>>>>>>>>can read and/or write that format.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>I'm familiar with Q316563 but it does not mention exif
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>Thank s in advance
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>

>>
>>

>
>

[Frank]

Re: can DotNet read and/or write exif


"Bruce W. Darby" <kracorat@atcom cast.netwrote in message
news:G8Cdneo2Ao 6S0lPYnZ2dnUVZ_ vmqnZ2d@comcast .com...

Frank,
>
I'm hoping that this information is what you need, but it appears to be so
by the questions you have asked on this subject.
>
Exif is shorthand for Exchangeable Image Format. It is not an graphic
type, such as .jpg or .tif. The Exif is a format whereby header
information is stored in the graphic for later access during program
runtime. Therefore, in answer to your question, it is NOT a file
extension, but a format that helps you RELATE to other file extensions.
>
Bruce
>

Thanks, I really appreciate the straight answer

You most likely know Imaging.ImageFo rmat contains Exif as well as Jpeg, Gif,
Png, and Tiff. All except Exif (I now know thanks to you) relate to a file
extension. So one wonders how come all the image formats gets a file
extension except Exif. What make Exif so different?

I kept looking at the definitions and finally noticed that the others are
"image formats" while Exif is an "image file format"
That helped a little.

But your answer was really what I needed.



Thanks a lot

[Bruce W. Darby]

Re: can DotNet read and/or write exif

Most welcome, Frank.

" Frank" <frank@a-znet.comwrote in message
news:uw%23Ag0XT HHA.3428@TK2MSF TNGP04.phx.gbl. ..

>
"Bruce W. Darby" <kracorat@atcom cast.netwrote in message
news:G8Cdneo2Ao 6S0lPYnZ2dnUVZ_ vmqnZ2d@comcast .com...

>Frank,
>>
>I'm hoping that this information is what you need, but it appears to be
>so by the questions you have asked on this subject.
>>
>Exif is shorthand for Exchangeable Image Format. It is not an graphic
>type, such as .jpg or .tif. The Exif is a format whereby header
>information is stored in the graphic for later access during program
>runtime. Therefore, in answer to your question, it is NOT a file
>extension, but a format that helps you RELATE to other file extensions.
>>
>Bruce
>>

>
Thanks, I really appreciate the straight answer
>
You most likely know Imaging.ImageFo rmat contains Exif as well as Jpeg,
Gif, Png, and Tiff. All except Exif (I now know thanks to you) relate to a
file extension. So one wonders how come all the image formats gets a file
extension except Exif. What make Exif so different?
>
I kept looking at the definitions and finally noticed that the others are
"image formats" while Exif is an "image file format"
That helped a little.
>
But your answer was really what I needed.
>
>
>
Thanks a lot
>
>

[Frank]

Re: can DotNet read and/or write exif

>

So try opening a jpeg and check the ImageFormat.exi f property and see if
it's true, and if so, the exif metadata is present, that would be my
guess.
>
Robin S.
Ts'i mahnu uterna ot twan ot geifur hingts uto.

I never thought of checking the property after I open a file.
Dumb maybe, but I only used it with Image.Save

Thanks again