Hi, I'm new using ASP.NET/AJAX, so I'm having some difficulties developing my page. In this page, I have to have a DropDownList where the user can select multiple items (besides each item there will be a CheckBox). The difficult part for me, is that this DropDownList is populated based on what the user types on a TextBox. For example, supose the DropDownList will be populate with countries. If the user types A, the DDL will have all the countries starting with A. When he keeps typing and add and F, for example (now we will have AF), only the countries starting with AF will be in the list. And so on. I know I need to use AJAX to do this, but because I never used AJAX before, I don't know how to start. Can you please help me with this? I'm using VB.NET, ASP.NET 3.5 and Visual Studio 2008.
I really appreciate your help! Ana
