Hi everyone

Looking if someone could possible point me in the right direction here please. I am wanting to build a cascading dropdownlist user control using c# and was wondering how the best way would be to target the specific nodes in my content tree in umbraco.

For example if i had the following structure in my content section

Merseyside   (type = county)
        Liverpool (type = city/town)
             Area of Liverpool 1 (type = suburb)
             Area of Liverpool 2 (type = suburb)
             Area of Liverpool 3 (type = suburb)
        Birkenhead (type = city/town)
             Area of Birkenhead 1 (type = suburb)
             Area of Birkenhead 2 (type = suburb)
etc......

from the front end i am wanting to populate the first drop-down list with the city/towns (e.g Liverpool, Birkenhead) and based on the value that is selected by the user i want to automatically populate the second dropdownlist with the related child suburbs.

How can I make the link between my user control and the umbraco content tree so I can target these nodes?

would it be something to do with adding the following libraries and using XPATHNodeIterator

using System.Xml.XPath;
using umbraco.NodeFactory;
using umbraco.cms.businesslogic.web;
using umbraco.businesslogic;

Any help or advice would be greatly appreciated as I have tried using XSLT but unfortunately failed (http://our.umbraco.org/forum/developers/xslt/52622-Dependent-dropdown-list)

Thanks all

Paul