modifying or adding extra information to jpeg image in winmo6

[kl2ish]

Hello Everyone,
I am doing a college project. I am completely new to c# and i am creating an app which clicks a picture and categorizes it . Now i am trying to store this category in the jpeg image as a metadata information.
What are the possible ways to do it ? Its just a string of data that would be decoded by my php/sql server.

I was giving PropertyItems a look for this. Any suggestions would really be welcome.

Thank you

[Plater]

PropertyItems is where the metadata is stored, so that is where you would put the data.
Check out this list for useful IDs (outdated i think though)
http://msdn.microsoft.com/en-us/library/ms932271.aspx

[kl2ish]

Thank you Platter,
my question would be by modifying the property items would i not have to decode the image again ?

What i am trying to achieve is fairly simple, add a gps latitude, gps longitude and a metadata perhaps under comment.

any kind of input for this would be appreciated.

Thanks

[kl2ish]

In my this quest,
i forgot to mention i use compact framework. I see there PropertyItems cannot be used with compact frameworks.

What is my best bet here ? create a c++ based wrapper for this ?

Any idea guys ?

[Plater]

If you can do it in c++, that's probably your best option for the compact framework.