Compare and extract different between tow NopCommerce Language pack

Nop.CompareLocaleResource

using System;
using System.Collections.Generic;
using System.Xml.Linq;

namespace Nop.CompareLocaleResource
{
    class Program
    {
        static void Main(string[] args)
        {
            var fullLangXmlPath = @"H:\l\language_pack.xml";
            var newLangXmlPath = @"H:\l\language_pack_.xml";
            var resultLangXmlPath = @"H:\l\language_pack_diff.xml";

            var strXmlTag = "<?xml version=\"1.0\" encoding=\"utf-16\"?>";
            var LanguageName = "فارسی";
            var SupportedVersion = "4.1";



                     var reader = new System.IO.StreamReader(fullLangXmlPath).ReadToEnd();
            XElement fullXml = XElement.Parse(reader);


            reader = new System.IO.StreamReader(newLangXmlPath).ReadToEnd();
            XElement newXml = XElement.Parse(reader);

            var fullElements = fullXml.Elements(XName.Get("LocaleResource"));
            var newElements = newXml.Elements(XName.Get("LocaleResource"));

            var fullDictionary = new Dictionary<string, string>();
            foreach (var fItem in fullElements)
            {
                fullDictionary.Add(fItem.Attribute(XName.Get("Name")).Value, fItem.Value);
            }


            var newDictionary = new Dictionary<string, string>();
            foreach (var fItem in newElements)
            {
                newDictionary.Add(fItem.Attribute(XName.Get("Name")).Value, fItem.Value);
            }

            var extractXml = new Dictionary<string, string>();

            foreach (var item in fullDictionary)
            {
                if (!newDictionary.ContainsKey(item.Key))
                {
                    extractXml.Add(item.Key, item.Value);
                }
            }

            var writer = new System.IO.StreamWriter(resultLangXmlPath);

            writer.Write("<?xml version=\"1.0\" encoding=\"utf-16\"?><Language Name=\"" + LanguageName + "\" SupportedVersion=\"" + SupportedVersion + "\">");
            foreach (var item in extractXml)
            {
                writer.WriteLine("<LocaleResource Name=\""+item.Key+"\"><Value>"+item.Value+"</Value></LocaleResource>");
            }
            writer.Write("</Language>");

            writer.Close();


        }
    }
}