posting a images on facebook

Hi I am using bellow links for posting a images on facebook account

http://www.aspsnippets.com/Articles/Post-Publish-and-Share-content-on-users-FaceBook-Wall-using-Graph-API-in-ASPNet.aspx

This links is working fine/ posting images when i am using same facebook account that are using for creating a App. But when i am using another facebook account for posting this is not posting image on facebook wall.

Below is my test page links where i am using this code.

http://kietrontesting.canadadevelopershub.com/default.aspx