using System.Linq;
using System.Xml.Linq;

string path = "c:\\mm.xml";
Assembly assembly = Assembly.LoadFile("c:\\JRJ.XTrend.Theme.dll");            
XElement root = new XElement("Types", assembly.GetTypes().Select(x => new XElement("Type",
    new XAttribute("Name",x.Name),
    new XElement("Methods",x.GetMethods().Select(m=>new XElement("Method",new XAttribute("Name",m.Name)))),
    new XElement("Properties", x.GetProperties().Select(p => new XElement("Property", new XAttribute("Name", p.Name)))),
    new XElement("Members", x.GetMembers().Select(p => new XElement("Member", new XAttribute("Name", p.Name)))),
    new XElement("Fields", x.GetFields().Select(p => new XElement("Fields", new XAttribute("Name", p.Name)))),
    new XElement("Events", x.GetEvents().Select(p => new XElement("Event", new XAttribute("Name", p.Name)))),
    new XElement("Interfaces", x.GetInterfaces().Select(p => new XElement("Interface", new XAttribute("Name", p.Name)))))));
root.Save(path);