I searched everywhere and wondering whether any posible way available for share data among applications within the mobile phone itself. What I basically meant by that is, if there any way that can create a file from one application and allow other applications to access that file.
The problem is, If we save the file in application's isolated storage, then any other application won't be able to access it.
For example a scenario like this. One application produce a file and store it in a public location within the phone and later using the email client application need that file to be sent as an attachment.
Really appreciate any guidance/ help over this task. Thanks in Advance...!!!
Unfortunately, there's currently no way to share data between applications on Windows Phone. For this, you'll have to rely on an external server. Depending on what your apps are doing, you may want to consider using skydrive or dropbox integration to share the files.
来源：https://stackoverflow.com/questions/10335632/windows-phone7-share-data-among-applications