Is it possible to obtain a value from a selected item in a list view control and use that item to look up additional information for that row of data
have a look on this
Get selected items from Listview control?
I saw that but I am not sure where to place the command
note, the code on the link I provided is just starting point - it will return array of selected items. as written above you will need to parse each array item for data content you need. that's however very specific to used list view content, so it's not possible to provide any generic script.
Retrieving data ...