Playground.cs

using System;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;

namespace StepperUpper
{
    internal static class Playground
    {
        internal static void Main()
        {
            IntPtr xEditLibHandle = SafeNativeMethods.LoadLibrary("XEditLib.dll");

            try
            {
                SafeNativeMethods.Initialize();
                SafeNativeMethods.SetGameMode(3);
                SafeNativeMethods.LoadPlugins(@"Skyrim.esm,Update.esm");
                StringBuilder sb = new StringBuilder(4000);
                while (!SafeNativeMethods.GetLoaderDone())
                {
                    SafeNativeMethods.GetBuffer(sb);
                    SafeNativeMethods.FlushBuffer();
                    if (sb.Length != 0)
                    {
                        Console.Write(sb.ToString());
                        sb.Clear();
                    }

                    Thread.Sleep(100);
                }

                uint skyrim, armo;
                IntPtr elements;
                SafeNativeMethods.GetElement(0, "Skyrim.esm", out skyrim);
                SafeNativeMethods.GetElement(skyrim, "ARMO", out armo);
                SafeNativeMethods.GetElements(armo, out elements);

                int cnt = SafeNativeMethods.ElementCount(armo);
                for (int i = 0; i < cnt; i++)
                {
                    SafeNativeMethods.SortKey(unchecked((uint)Marshal.ReadInt32(elements, i * 4)), sb);
                    Console.WriteLine("[ARMO:{0}]", sb.ToString());
                    sb.Clear();
                }
            }
            finally
            {
                SafeNativeMethods._Finalize();
                SafeNativeMethods.FreeLibrary(xEditLibHandle);
                SafeNativeMethods.FreeLibrary(xEditLibHandle);
            }
        }
    }
}

SafeNativeMethods.cs

using System;
using System.Runtime.InteropServices;
using System.Text;

namespace StepperUpper
{
    internal static class SafeNativeMethods
    {
        [DllImport("kernel32", SetLastError = true, CharSet = CharSet.Ansi)]
        internal static extern IntPtr LoadLibrary([MarshalAs(UnmanagedType.LPStr)]string fileName);

        [DllImport("kernel32.dll", SetLastError = true)]
        internal static extern bool FreeLibrary(IntPtr module);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl)]
        internal static extern void Initialize();

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl, EntryPoint = "Finalize")]
        internal static extern void _Finalize();

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl)]
        internal static extern void SetGameMode(int mode);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
        internal static extern bool LoadPlugins(string str);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl)]
        internal static extern bool GetLoaderDone();

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
        internal static extern void GetBuffer(StringBuilder buffer);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl)]
        internal static extern uint FileByIndex(int index);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
        internal static extern uint FileByName(string name);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
        internal static extern bool ElementType(uint h, StringBuilder buffer);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl)]
        internal static extern int ElementCount(uint h);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
        internal static extern bool GetElement(uint h, string key, out uint res);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl)]
        internal static extern bool GetElements(uint h, out IntPtr res);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
        internal static extern bool Name(uint h, StringBuilder buffer);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
        internal static extern bool Signature(uint h, StringBuilder buffer);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
        internal static extern bool SortKey(uint h, StringBuilder buffer);

        [DllImport("XEditLib", CallingConvention = CallingConvention.Cdecl)]
        internal static extern void FlushBuffer();
    }
}