File upload

Question

How to upload  file in asp.net using ajax and jquery.

Restrictions:Ashok,

 Forward this mail to vinila,It consist of one query on  .net.

How to upload mulitple files in asp.net.(even single file upload only,send me the code example)

Scenario: 

1.use only html input type=file.(without asp.net file upload control)

2.use jquery and ajax for file upload.(i.e by callback not post back)

3.Save the file in server folder and path in database(sqlServer)