Items appear selected only when the ListView control has focus. To select items in response to a user action such as a button click, be sure to call the Focus method in addition to setting this property.
Then I suspect that the data is not a jpeg file - what are you trying to do? Not "read a file as an Image, but what is the file? Why are you reading it? What are you trying to achieve? It may be that one of use is using the wrong terms!
If you get an email telling you that you can catch Swine Flu from tinned pork then just delete it. It's Spam.