title: Where to write C# code for office365 sharepoint site
body: <p>I have signed up for office 365
  which provides sharepoint site,</p>
  
  <p>I am able to edit the html content of the site.(using Microsoft SharePoint Designer 2010 and Web interface)</p>
  
  <p>Question 1. How to edit the C#/VB code of the site web pages?<br/>
  Question 2. I have created some asp.net pages and want to upload them to my site, How to use FTP for sharepoint site?<br/>
  Question 3. How to access data from database for a sharepoint site?</p>
  
  <p>P.S: I have vs2010 but cant open the office365 site ,
  also I tried Microsoft SharePoint Designer 2010 but it doesn't display the code behind C#/VB.NET code</p>