modifying or adding extra information to jpeg image in winmo6

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

re: modifying or adding extra information to jpeg image in winmo6

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Check out this list for useful IDs (outdated i think though)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

re: modifying or adding extra information to jpeg image in winmo6

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

re: modifying or adding extra information to jpeg image in winmo6

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 ?

re: modifying or adding extra information to jpeg image in winmo6

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