Dynamic data load on ASPX page
<p>I have an internal web service (ASP.NET) written on C# in a company I work for. There are only 2 pages in it, one of this pages contains DropDownList. 
Every time when user selecting an item from that DropDownList I need to somehow pass selected item value to a static method and show result string of that method anywhere on page.</p>

<p>I've never worked with ASP.NET or any web programming before and a bit confused about how to do it, not sure where to start looking even.</p>
