Question : How to populate multiple infopath form fields with values extracted from a SharePoint list when triggered by a dropdown selection

Hi SharePoint & Infopath experts,

Context:
1) I created a custom list in MOSS with 3 fields(column): Name, City, Province with multiple prefilled values(all text).
2) I created an infopath form(form service) with corresponding fields(Name(dropdown), City(text), Province(text)) as above to try to fill them out when users select the dropdown Name field.
3) I was able to create a Data Connection called: CustInfoListConn to the SharePoint List, and have the Name(dropdown) field in my infopath form filled up with Name values of the SharePoint List.

My Question:
How can I write the required C# code in VSTA in following method:
public void NameDropdown_Changed(object sender, XmlEventArgs e)
{
     // I know following code can help me to grab the value(ID) of the selected SharePoint Name field
    String NameID = CreateNavigator().SelectSingleNode("/my:myFields/my:NameDropdown", NamespaceManager);
   
  // but I don't know how to grab the values of City & Province of the selected list items, so that I can use SetValue() method to set their value accordingly, anyone can help to fill up the remaining puzzle?
}

Thank you,
-Rick

Answer : How to populate multiple infopath form fields with values extracted from a SharePoint list when triggered by a dropdown selection

I figured it out myself by using XmlDocument object's method: SelectSingleNode.