title: VB.Net threading advice
body: <p>I have datagrid with some data and I'm making a loop through the items with for... next
  Inside the loop i'm making a call to a web service with parameters from the datagrid
  Because of the speed the work is very time consuming and I want to give the user the option to select how many multiple calls to the service he want.
  How can I make simultaneously calls to the web service inside the loop?</p>