How to tranfer an information (data & attachments) from a plug-in c# for outlook 2010 to a web application (in php) via a web service in C#?

See more:

C#

Outlook

webservice

I am developing a C# Plug-in for Outlook 2010, when I took a selected mail, I fragments into the subject, body, attachments etc ... and I want to send them to a web application through a web service in C#, this web application is in PHP.

The web application in PHP accepts POST and FILE data.

Can someone help me how I can make this transfer, how do I send them to the web service c# and how to send them back from the web service to a web application ?

Can you tell me the steps to do to ensure that transfer ???

Thank you in advance.