<script src="Scripts/jquery.min.js" type="text/javascript"></script>
    <script type="text/javascript">
        $(document).ready(function () {
            try {
                var result = $.ajax({ 'type': 'HEAD', 'url': '/' }).success(function () {
                    var date1 = new Date(result.getResponseHeader('Date'));
                    alert(date1);
                });
            }
            catch (err) {
                //...
            }
        });       
    </script>

حال برای استفاده از Context تولید شده، به صورت زیر شیءایی را ساخته:

 static DbContext _dbContext=null;
        public static DbContext GetDbContextInstance()
        {
            if (_dbContext == null)
            {
                string path = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
                var dllversionAssm = Assembly.LoadFile(path + "\\ProjectContext.dll");
                Type type = dllversionAssm.GetType("DbContextGenerator.TestContext");
                _dbContext = (DbContext)Activator.CreateInstance(type);
            }
            return _dbContext;
        }

و سپس برای ساخت DbSet از هر Entity به کد زیر نیاز خواهیم داشت:

public static System.Data.Entity.DbSet<T> Get<T>() where T : class
        {
            var set = GetDbContextInstance().Set<T>();
            return set;
        }

هم اکنون می‌توان رکوردهای Entity‌ها را واکشی کرده و یا آن‌ها را با یکدیگر Join بزنیم:

            var products = Get<Product>().ToList();

            var productTypes = Get<ProductType>().ToList();


            var query = from p in Get<Product>()
                        join pt in Get<ProductType>() on p.ProductTypeId equals pt.Id
                        select new
                        {
                            Id = p.Id,
                            Name = p.Name,
                            ProductType = pt.Name

                        };

            var JoinResult = query.ToList();

و نتیجه واکشی ها 

کد کامل این پروژه  

        [Authorize(Roles = "Administrator")]
        public ActionResult AddUserRole()
        {
            return View();
        }
       
         //////////////////////////////////////////////////////////

        //اضافه کردن نقش////////////
        [Authorize(Roles = "Administrator")]
        [HttpGet]
        [ChildActionOnly]
        
        public ActionResult AddRole()
        {
          
            return PartialView("PartialRole");
        }

        [ChildActionOnly]
        [HttpPost]
        //[ValidateAntiForgeryToken]
        public ActionResult AddRole(tblRole rl, string submitValue)
        {
            if (submitValue == "ذخیره نقش")
            {
                //تبدیل تاریخ میلادی به شمسی
                rl.RoleDateCreate = Utility.ToPersianDate(DateTime.Now);

                UserRepository user = new UserRepository();
                //برای وارد کردن خودکار شناسه کاربر وارد شده
                rl.UserIDCreate_FK = Convert.ToInt64(user.FindUserID(User.Identity.Name));

                if (ModelState.IsValid)
                {
                    RoleRepository acr = new RoleRepository();
                    var model = acr.Add(rl);
                    ViewBag.Message = "نقش با موفقیت ثبت شد";
                    ModelState.Clear();
                }
            }
            else
            {
                ModelState.Clear();
            }
            return PartialView("PartialRole", rl);

        }
        //////////////////////////////////////////////////////////

        //اضافه کردن کاربر//////////
        [Authorize(Roles = "Administrator")]
        [HttpGet]
        [ChildActionOnly]
       
        public ActionResult AddUser()
        {
            return PartialView("PartialUser");
        }
        
        [ChildActionOnly]
        [HttpPost]
     
        public ActionResult AddUser(tblUser rl, string submitValue)
        {
            if (submitValue == "ثبت نام")
            {
                if (ur.ExistUserName(rl.UserName))//برای اینکه نام کاربری تکراری نباشد
                {
                    ViewBag.Warning = "این نام کاربری تکراری میباشد";
                 
                }
                else
                {
                   
                    //برای وارد کردن خودکار شناسه کاربر وارد شده
                    rl.UserIDCreate = Convert.ToInt64(ur.FindUserID(User.Identity.Name));
                   
                    //تبدیل میلادی به شمسی
                    rl.UserDateCreate = Utility.ToPersianDate(DateTime.Now);

                    if (ModelState.IsValid)
                    {
                        UserRepository acr = new UserRepository();
                        var model = acr.Add(rl);
                        ViewBag.Message = "کاربر با موفقیت ثبت شد";
                        ModelState.Clear();
                    }
                }
            }
            else
            {
                ModelState.Clear();
            }
            return PartialView("PartialUser", rl);

        }

        //////////////////////////////////////////////////////////

        // دادن نقش به کاربر///////

        [ChildActionOnly]
        
        [HttpGet]
        [Authorize(Roles = "Administrator")]
        public ActionResult RoleOfUser()
        {
            var blUser = new UserRepository();
            var blRole = new RoleRepository();
            var model = new RoleUserViewModel();

            model.username = blUser.Select().ToList();
            model.rolename = blRole.Select().ToList();
           
            return PartialView("PartialRoleOfUser", model);
        }

        [ChildActionOnly]
        [HttpPost]      
        public ActionResult RoleOfUser(tblRoleUser rl, string submitValue)
        {
            if (submitValue == "ذخیره نقش کاربر")
            {
                //برای وارد کردن خودکار شناسه کاربر وارد شده
                rl.UserIDCreate_FK = Convert.ToInt64(ur.FindUserID(User.Identity.Name));

                //تبدیل میلادی به شمسی
                rl.RoleUserDateCreate = Utility.ToPersianDate(DateTime.Now);

                if (ModelState.IsValid)
                {
                    RoleUserRepository acr = new RoleUserRepository();
                    var model = acr.Add(rl);
                    ViewBag.Message = "نقش کاربر با موفقیت ثبت شد";

                    ModelState.Clear();
                }
            }
            else
            {
                ModelState.Clear();
            }
            return PartialView("PartialRoleOfUser", rl);

        }

@model MeterControl.ViewModels.RoleUserViewModel
<script src="~/Scripts/jquery-1.8.2.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

@using (Ajax.BeginForm("AddUserRole", "Home", new AjaxOptions { HttpMethod = "Post", Url = "/Home/AddUserRole" })){ 
    <fieldset>
        <legend>tblRole</legend>

        

        <div>
            @Html.LabelFor(model => model.role.RoleName)
        </div>
        <div>
            @Html.EditorFor(model => model.role.RoleName)
            @Html.ValidationMessageFor(model => model.role.RoleName)
        </div>

       

        @ViewBag.Message
        <p>
            <input type="submit" value="ذخیره نقش" name="submitValue" />
        </p>
    </fieldset>
}

@{
    ViewBag.Title = "AddUserRole";
}

<h2>AddUserRole</h2>
<div>
    <div>
        @Html.Action("AddRole", "Home")
    </div>
    <div>
        @Html.Action("AddUser", "Home")
        @Html.Partial("PartialUser")
    </div>
    <div>
        @Html.Action("RoleOfUser","Home")
    </div>
</div>

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.html;
using iTextSharp.text.html.simpleparser;
using iTextSharp.text.pdf;

namespace CustomHtmlWorkerTag
{
    /// <summary>
    /// Our custom HTML Tag to add an IElement.
    /// </summary>
    public class CustomImageHTMLTagProcessor : IHTMLTagProcessor
    {
        /// <summary>
        /// Tells the HTMLWorker what to do when a close tag is encountered.
        /// </summary>
        public void EndElement(HTMLWorker worker, string tag)
        {
        }

        /// <summary>
        /// Tells the HTMLWorker what to do when an open tag is encountered.
        /// </summary>
        public void StartElement(HTMLWorker worker, string tag, IDictionary<string, string> attrs)
        {
            Image image;
            var src = attrs["src"];

            if (src.StartsWith("data:image/"))
            {
                // data:[<MIME-type>][;charset=<encoding>][;base64],<data>
                var base64Data = src.Substring(src.IndexOf(",") + 1);
                var imagedata = Convert.FromBase64String(base64Data);
                image = Image.GetInstance(imagedata);
            }
            else
            {
                image = Image.GetInstance(src);
            }

            worker.UpdateChain(tag, attrs);
            worker.ProcessImage(image, attrs);
            worker.UpdateChain(tag);
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            using (var pdfDoc = new Document(PageSize.A4))
            {
                PdfWriter.GetInstance(pdfDoc, new FileStream("Test.pdf", FileMode.Create));
                pdfDoc.Open();

                FontFactory.Register("c:\\windows\\fonts\\tahoma.ttf");

                var tags = new HTMLTagProcessors();
                // Replace the built-in image processor
                tags[HtmlTags.IMG] = new CustomImageHTMLTagProcessor();

                var html = "<img alt='' src='data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAodJREFUeNpsk0tME1EUhv87UwlCREhRFpi4cGMMRrTE4MaoxBhAsDyMssFHfCQu3BlXGuNKNy5NmqALoqEEMJWCgEUjYojllSpofIUNBNqmIKU6OnQennunUxvgJF86957z/+d27hkGigMlDJfOAmV7AcYsKGqIZljRSvhNE+CMTwEtXmBy2gQb7mCQJUBKkTIQYtfJYCNMAxO9hzq5CYmFiWFY6ISE9VFLRedc1SONeqwf+uJLuKreNPI9nltbLG0orhpqUCM90DRVoEbJ5MSLho1MMg1O0bHOuyoD9crCcxL+xa0HqwL+rEQHsb/CW89reO1aAyEuq+yp+zXvg66rgng8LrDXSmwYpUc8dZkmDsJNL+NCeVVXbWK+O32cpJ7E6OgkwuEwrl8phaHrVsfYD+x03XTPjN3nzZnD0HGxvPppTSLcLwo0I4lldRFK8jdCoZBlJquAbBnr0BD9GUTRvubahclW5qDukqkpIqlodGQ1At3UxZXaIUvauqsyjBV+jZJEJ3s83HO5j+UWI7E6C4mp2EQCTixyV2CvbbKzNmN2zNfHtbzPM3p4FOy/M5CXtwsOKZmmsOi2IHMvyyFhJhgY4BqutQ/aRRstocEngZzswnQnO+x1lqTjy8hIgNdyDc+x5nomxrKJhpcSp2lSrx48WlZhGArynG5hsLLoE7/jQ59f0aR7ZBkdbf7U6Ge+mKYaBvdx8wwZXjtWvfswfTrp3Over29J8NAXYO1t/v/7csZA5U5/Q35nH+aKt8OMR2POPSUFOyRmorvje3BiCt4b9zBANTmwGvP/aMoZRluJbURB8APmnPlQliNLzk8flxbeh9Du8eId5bYQ2SnxH36b/wQYABNFRsIaESsTAAAAAElFTkSuQmCC' />";

                var styles = new StyleSheet();
                styles.LoadTagStyle(HtmlTags.BODY, HtmlTags.FONTFAMILY, "tahoma");
                styles.LoadTagStyle(HtmlTags.BODY, HtmlTags.ENCODING, "Identity-H");

                PdfPCell pdfCell = new PdfPCell { Border = 0 };
                pdfCell.RunDirection = PdfWriter.RUN_DIRECTION_LTR;

                using (var reader = new StringReader(html))
                {
                    var parsedHtmlElements = HTMLWorker.ParseToList(reader, styles, tags, null);

                    foreach (var htmlElement in parsedHtmlElements)
                    {
                        pdfCell.AddElement(htmlElement);
                    }
                }

                var table1 = new PdfPTable(1);
                table1.AddCell(pdfCell);
                pdfDoc.Add(table1);
            }

            Process.Start("Test.pdf");
        }
    }
}

var tags = new HTMLTagProcessors();
// Replace the built-in image processor
tags[HtmlTags.IMG] = new CustomImageHTMLTagProcessor();

HTMLWorker.ParseToList(reader, styles, tags, null)

using NUnit.Framework;
using UrlNormalizationTest;

namespace UrlNormalization.Tests
{
    [TestFixture]
    public class UnitTests
    {
        [Test]
        public void Test1ConvertingTheSchemeAndHostToLowercase()
        {
            var url1 = "HTTP://www.Example.com/".NormalizeUrl();
            var url2 = "http://www.example.com/".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test2CapitalizingLettersInEscapeSequences()
        {
            var url1 = "http://www.example.com/a%c2%b1b".NormalizeUrl();
            var url2 = "http://www.example.com/a%C2%B1b".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test3DecodingPercentEncodedOctetsOfUnreservedCharacters()
        {
            var url1 = "http://www.example.com/%7Eusername/".NormalizeUrl();
            var url2 = "http://www.example.com/~username/".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test4RemovingTheDefaultPort()
        {
            var url1 = "http://www.example.com:80/bar.html".NormalizeUrl();
            var url2 = "http://www.example.com/bar.html".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test5AddingTrailing()
        {
            var url1 = "http://www.example.com/alice".NormalizeUrl();
            var url2 = "http://www.example.com/alice/?".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test6RemovingDotSegments()
        {
            var url1 = "http://www.example.com/../a/b/../c/./d.html".NormalizeUrl();
            var url2 = "http://www.example.com/a/c/d.html".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test7RemovingDirectoryIndex1()
        {
            var url1 = "http://www.example.com/default.asp".NormalizeUrl();
            var url2 = "http://www.example.com/".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test7RemovingDirectoryIndex2()
        {
            var url1 = "http://www.example.com/default.asp?id=1".NormalizeUrl();
            var url2 = "http://www.example.com/default.asp?id=1".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test7RemovingDirectoryIndex3()
        {
            var url1 = "http://www.example.com/a/index.html".NormalizeUrl();
            var url2 = "http://www.example.com/a/".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test8RemovingTheFragment()
        {
            var url1 = "http://www.example.com/bar.html#section1".NormalizeUrl();
            var url2 = "http://www.example.com/bar.html".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test9LimitingProtocols()
        {
            var url1 = "https://www.example.com/".NormalizeUrl();
            var url2 = "http://www.example.com/".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test10RemovingDuplicateSlashes()
        {
            var url1 = "http://www.example.com/foo//bar.html".NormalizeUrl();
            var url2 = "http://www.example.com/foo/bar.html".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test11AddWww()
        {
            var url1 = "http://example.com/".NormalizeUrl();
            var url2 = "http://www.example.com".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }

        [Test]
        public void Test12RemoveFeedburnerPart()
        {
            var url1 = "http://site.net/2013/02/firefox-19-released/?utm_source=rss&utm_medium=rss&utm_campaign=firefox-19-released".NormalizeUrl();
            var url2 = "http://site.net/2013/02/firefox-19-released".NormalizeUrl();

            Assert.AreEqual(url1, url2);
        }
    }
}

public class User
{
     public int Id { set; get; }
}

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Reflection;
using System.Reflection.Emit;

namespace FastReflectionTests
{
    /// <summary>
    /// کلاسی برای اندازه گیری زمان اجرای عملیات
    /// </summary>
    public class Benchmark : IDisposable
    {
        Stopwatch _watch;
        string _name;

        public static Benchmark Start(string name)
        {
            return new Benchmark(name);
        }

        private Benchmark(string name)
        {
            _name = name;
            _watch = new Stopwatch();
            _watch.Start();
        }

        public void Dispose()
        {
            _watch.Stop();
            Console.WriteLine("{0} Total seconds: {1}"
                               , _name, _watch.Elapsed.TotalSeconds);
        }
    }

    public class User
    {
        public int Id { set; get; }
    }

    class Program
    {
        public static Func<object, object> GetFastGetterFunc(string propertyName, Type ownerType)
        {
            var propertyInfo = ownerType.GetProperty(propertyName, BindingFlags.Instance | BindingFlags.Public);

            if (propertyInfo == null)
                return null;
            
            var getter = ownerType.GetMethod("get_" + propertyInfo.Name,
                                             BindingFlags.Instance | BindingFlags.Public | BindingFlags.FlattenHierarchy);
            if (getter == null)
                return null;

            var dynamicGetterMethod = new DynamicMethod(
                                                name: "_",
                                                returnType: typeof(object),
                                                parameterTypes: new[] { typeof(object) },
                                                owner: propertyInfo.DeclaringType,
                                                skipVisibility: true);
            var il = dynamicGetterMethod.GetILGenerator();

            il.Emit(OpCodes.Ldarg_0); // Load input to stack
            il.Emit(OpCodes.Castclass, propertyInfo.DeclaringType); // Cast to source type
            // نکته مهم در اینجا فراخوانی نهایی متد گت بدون استفاده از ریفلکشن است
            il.Emit(OpCodes.Callvirt, getter); //calls its get method

            if (propertyInfo.PropertyType.IsValueType)
                il.Emit(OpCodes.Box, propertyInfo.PropertyType);//box

            il.Emit(OpCodes.Ret);

            return (Func<object, object>)dynamicGetterMethod.CreateDelegate(typeof(Func<object, object>));
        }


        static void Main(string[] args)
        {
            //تهیه لیستی از داده‌ها جهت آزمایش
            var list = new List<User>();
            for (int i = 0; i < 1000000; i++)
            {
                list.Add(new User { Id = i });
            }

            // دسترسی به اطلاعات لیست به صورت متداول از طریق ریفلکشن معمولی
            var idProperty = typeof(User).GetProperty("Id");
            using (Benchmark.Start("Normal reflection"))
            {
                foreach (var item in list)
                {
                    var id = idProperty.GetValue(item, null);
                }
            }

            // دسترسی از طریق روش سریع دستیابی به اطلاعات خواص
            var fastIdProperty = GetFastGetterFunc("Id", typeof(User));
            using (Benchmark.Start("Fast Property"))
            {
                foreach (var item in list)
                {
                    var id = fastIdProperty(item);
                }
            }
        }
    }
}

 Normal reflection Total seconds: 2.0054177
Fast Property Total seconds: 0.0552056

Today we released our first public preview of  Blazor , a new experimental .NET web framework using C#/Razor and HTML that runs in the browser with WebAssembly . Blazor enables full stack web development with the stability, consistency, and productivity of .NET. 

using System;
using System.Linq;
using System.Net;
using System.Text;
using HtmlAgilityPack;

namespace HapTests
{
    public class HtmlReader
    {
        public Action<string> ParseError { set; get; }

        public Func<HtmlNode, bool> ParserHtmlNode { set; get; }

        public void StartParsingHtml(Uri url)
        {
            using (var client = new WebClient { Encoding = Encoding.UTF8 })
            {
                client.Headers.Add("user-agent", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)");
                StartParsingHtml(client.DownloadString(url));
            }
        }

        public void StartParsingHtml(string htmlContent)
        {
            if (string.IsNullOrWhiteSpace(htmlContent))
                throw new ArgumentNullException("content");

            var doc = new HtmlDocument
            {
                OptionCheckSyntax = true,
                OptionFixNestedTags = true,
                OptionAutoCloseOnEnd = true,
                OptionDefaultStreamEncoding = Encoding.UTF8
            };
            doc.LoadHtml(htmlContent);

            if (doc.ParseErrors != null && doc.ParseErrors.Any())
            {
                foreach (var error in doc.ParseErrors)
                {
                    if (ParseError != null)
                        ParseError(error.Code + " - " + error.Reason);
                }
            }

            if (!doc.DocumentNode.HasChildNodes)
                return;

            handleChildren(doc.DocumentNode.ChildNodes);
        }

        private void handleChildren(HtmlNodeCollection nodes)
        {
            foreach (var itm in nodes)
            {
                if (itm.Name.ToLower().Equals("html"))
                {
                    if (itm.Element("body") != null)
                        handleChildren(itm.Element("body").ChildNodes);
                }
                else
                    handleHtmlNode(itm);
            }
        }

        private void parserChildNodes(HtmlNode content)
        {
            foreach (var item in content.ChildNodes)
            {
                handleHtmlNode(item);
            }
        }

        private void handleHtmlNode(HtmlNode htmNode)
        {
            switch (htmNode.Name.ToLower())
            {
                case "html":
                case "body":
                    handleChildren(htmNode.ChildNodes);
                    break;

                default:
                    if (ParserHtmlNode == null)
                        throw new ArgumentNullException("ParserHtmlNode");

                    if (ParserHtmlNode(htmNode))
                        parserChildNodes(htmNode);

                    break;
            }
        }
    }
}

new HtmlReader
{
    ParseError = error => Console.WriteLine(error),
    ParserHtmlNode = htmlNode =>
    {
        //switch(htmlNode.Name) { }
        return true; //it's a nested node.
    }
}.StartParsingHtml(html);

using System;
using System.Diagnostics;
using System.IO;
using System.Text;
using HtmlAgilityPack;

namespace HapTests
{
    class Program
    {
        static void Main(string[] args)
        {
            var html = 
                @"<table width='750' border='0' style='font-size: 10pt; width: 736px' class='boxcar2 gerd'>
            <tbody><tr>
            <td height='70' colspan='4' class='boxcart1 gerd'>
            <iframe width='718' scrolling='no'>
            </iframe></td>
            </tr>
            <tr>
            <td height='70' colspan='4' class='boxcart1 gerd'>
    </td>
            </tr>
            <tr>
            <td width='193' height='36' class='boxcart2 gerd'>
            <a target='_self' href='Curr.cbi.2.php'>نرخ ارز مبادله ای بانک مرکزی</a></td>
            <td width='181' height='36' class='boxcart2 gerd'>
            <a target='_self' href='Curr.cbi.php'>نرخ ارز مرجع بانک مرکزی</a></td>
            <td width='149' height='36' class='boxcart2 gerd'>
            <a target='_self' href='curv.htm'>نمودار قیمت طلا</a></td>
            <td width='199' height='36' class='boxcart2 gerd'>
            <a target='_self' href='index.php'>قیمت طلا و سکه در بازار ایران</a></td>
            </tr>
            <tr>
            <td height='48' colspan='4' class='boxcart1 gerd'>
            <p dir='rtl'><span style='font-size: 13pt;'>تابلو آنلاین قیمت جهانی طلا و نقره ( دلار 
            )</span></p></td>
            </tr>
            <tr>
            <td height='57' colspan='2' class='boxcart1 gerd'>قیمت لحظه ای هر انس 
            نقره در بازارهای جهانی<br>
            <span style='font-size: 9pt;'>
            </span></td>
            <td height='57' colspan='2' class='boxcart1 gerd'>قیمت لحظه ای هر انس 
            طلا در بازارهای جهانی<br>
            <span style='font-size: 9pt;'>
            </span></td>
            </tr>
            <tr>
            <td height='48' colspan='4' class='boxcart1 gerd'>
            <p dir='rtl'><span style='font-size: 13pt'>تابلو آنلاین قیمت طلا ، سکه 
            و نقره در بازار ایران ( ریال )</span></p>
            </td>
            </tr>
            <tr>
            <td style='direction: rtl; font-size: 8pt' colspan='4'><div align='center'>
                            <table id='gold_tbl'><tbody><tr><th>قیمت طلا</th><th>قیمت زنده</th><th>تغییر</th>
                            <th>کمترین</th><th>بیشترین</th><th>زمان</th></tr><tr><td>انس طلا <sup>دلار</sup></td>
                            <td class='s0_1'>1,375.90</td><td class='c0_1 neg'>(-0.34%) -4.70</td>
                            <td class='l0_1'>1,374.90</td><td class='h0_1'>1,380.80</td><td class='z0_1 fa'>17:53</td>
                            </tr><tr><td>مثقال طلا</td><td class='s3_2'>5,290,000</td>
                            <td class='c3_2 pos'>(1.63%) 85,000</td><td class='l3_2'>5,200,000</td><td class='h3_2'>5,320,000</td><td class='z3_2 fa'>17:50</td></tr><tr><td>گرم طلای 18</td>
                            <td class='s3_3'>1,221,200</td><td class='c3_3 pos'>(1.63%) 19,600</td><td class='l3_3'>1,200,400</td><td class='h3_3'>1,228,100</td><td class='z3_3 fa'>17:50</td>
                            </tr><tr><td>انس نقره <sup>دلار</sup></td><td class='s0_5'>21.83</td><td class='c0_5'>(0.00%) 0.00</td><td class='l0_5'>21.67</td><td class='h0_5'>21.96</td>
                            <td class='z0_5 fa'>17:53</td></tr></tbody></table><br><table id='coin_tbl'><tbody><tr><th>سکه</th><th>قیمت زنده</th><th>تغییر</th><th>کمترین</th>
                            <th>بیشترین</th><th>ارزش طلا</th><th>زمان</th></tr><tr><td>بهار آزادی</td><td class='s3_10'>12,650,000</td><td class='c3_10 pos'>(2.68%) 330,000</td>
                            <td class='l3_10'>12,320,000</td><td class='h3_10'>12,650,000</td><td class='z4_10'>11,918,400</td><td class='z3_10 fa'>16:07</td></tr><tr><td>امامی</td>
                            <td class='s3_11'>12,960,000</td><td class='c3_11 pos'>(2.61%) 330,000</td><td class='l3_11'>12,630,000</td><td class='h3_11'>13,050,000</td><td class='z4_11'>11,918,400</td>
                            <td class='z3_11 fa'>17:43</td></tr><tr><td>نیم</td><td class='s3_12'>6,880,000</td><td class='c3_12 pos'>(2.69%) 180,000</td><td class='l3_12'>6,700,000</td>
                            <td class='h3_12'>6,900,000</td><td class='z4_12'>5,959,200</td><td class='z3_12 fa'>16:08</td></tr><tr><td>ربع</td><td class='s3_13'>4,250,000</td><td class='c3_13 pos'>(2.41%) 100,000</td>
                            <td class='l3_13'>4,150,000</td><td class='h3_13'>4,300,000</td><td class='z4_13'>2,978,100</td><td class='z3_13 fa'>17:42</td></tr><tr><td>گرمی</td><td class='s3_14'>2,940,000</td>   
                            <td class='c3_14 pos'>(3.16%) 90,000</td><td class='l3_14'>2,850,000</td><td class='h3_14'>2,940,000</td><td class='z4_14'>1,465,400</td><td class='z3_14 fa'>17:40</td></tr></tbody></table></div></td>
            </tr>
            </tbody></table>
                ";

            extractXPath(html);
            test(html);
        }

        /// <summary>
        /// Converts /#comment[1] to /comment()[1] 
        /// or /#text[1] to /text()[1]
        /// </summary>
        private static string GetValidXPath(string xpath)
        {
            var index = xpath.LastIndexOf("/");
            var lastPath = xpath.Substring(index);

            if (lastPath.Contains("#"))
            {
                xpath = xpath.Substring(0, index);
                lastPath = lastPath.Replace("#", "");
                lastPath = lastPath.Replace("[", "()[");
                xpath = xpath + lastPath;
            }

            return xpath;
        }

        private static void extractXPath(string html)
        {
            var sb = new StringBuilder();
            new HtmlReader
            {
                ParseError = error => Console.WriteLine(error),
                ParserHtmlNode = htmlNode =>
                {
                    if (htmlNode is HtmlTextNode)
                    {
                        sb.AppendLine("Text NodeName: " + htmlNode.Name.Trim());
                        sb.AppendLine("InnerText: " + htmlNode.InnerText.Trim());
                    }
                    else
                    {
                        sb.AppendLine("NodeName: " + htmlNode.Name.Trim());
                        var nodeText = new StringBuilder();
                        for (int i = 0; (i < htmlNode.OuterHtml.Length && htmlNode.OuterHtml[i] != '>'); i++)
                            nodeText.Append(htmlNode.OuterHtml[i]);

                        nodeText.Append(">");

                        sb.AppendLine("Node Start: " + nodeText.ToString());
                    }

                    sb.AppendLine("XPath: " + GetValidXPath(htmlNode.XPath.Trim()));
                    sb.AppendLine(Environment.NewLine);

                    return true; //it's a nested node.
                }
            }.StartParsingHtml(html);

            File.WriteAllText("xpath.txt", sb.ToString());
            Process.Start("xpath.txt");
        }

        private static void test(string html)
        {
            var doc = new HtmlDocument
            {
                OptionCheckSyntax = true,
                OptionFixNestedTags = true,
                OptionAutoCloseOnEnd = true,
                OptionDefaultStreamEncoding = Encoding.UTF8
            };
            doc.LoadHtml(html);
            var node = doc.DocumentNode.SelectSingleNode("/table[1]/tbody[1]/tr[7]/td[1]/div[1]/table[2]/tbody[1]/tr[6]/td[7]/text()[1]");
            Console.WriteLine(node.InnerText);
        }
    }
}

Text NodeName: #text
InnerText: 17:40
XPath: /table[1]/tbody[1]/tr[7]/td[1]/div[1]/table[2]/tbody[1]/tr[6]/td[7]/text()[1]

Install-Package mongocsharpdriver

  public class Author
    {
        public ObjectId Id { get; set; }
        public string Name { get; set; }
    }

public class Language
    {
        public ObjectId Id { get; set; }
        public string Name { get; set; }
    }

  public class Book
    {
        public ObjectId Id { get; set; }
        public string Title { get; set; }
        public string ISBN { get; set; }
        public int Price { get; set; }
        public List<Author> Authors { get; set; }
        public Language Language { get; set; }
    }

           var book =new Book()
           {
               Title = "Gone With Wind",
               ISBN = "43442424",
               Price = 50000,
               Language = new Language()
               {
                  Name = "Persian"
               },
               Authors = new List<Author>()
               {
                   new Author()
                   {
                       Name = "Margaret Mitchell"
                   },
                     new Author()
                   {
                       Name = "Ali Mahboobi (Translator)"
                   },
               }
           };

var client = new MongoClient();

 string connectionString = "mongodb://localhost:27017";
            MongoClientSettings settings = MongoClientSettings.FromUrl(new MongoUrl(connectionString));
            var client = new MongoClient(settings);

var db = client.GetDatabase("publisher");

var collection = db.GetCollection<Book>("books");

collection.InsertOneAsync(book);

فعلا موجودیت‌های مؤلفان و زبان به دلیل اینکه سند اختصاصی برای خود ندارند، با صفر پر شده‌اند؛ ولی شناسه یکتای سند، مقدار خود را گرفته است.

عملیات خواندن

       var client = new MongoClient();
            var db = client.GetDatabase("publisher");
            db.DropCollection("books");
            var collection = db.GetCollection<Book>("books");
            
            var book =new Book()
           {
               Title = "Gone With Wind",
               ISBN = "43442424",
               Price = 50000,
               Year = 1936,
               LastStock = DateTime.Now.AddDays(-13),
               Language = new Language()
               {
                  Name = "Persian"
               },
               Authors = new List<Author>()
               {
                   new Author()
                   {
                       Name = "Margaret Mitchell"
                   },
                     new Author()
                   {
                       Name = "Ali Mahboobi (Translator)"
                   },
               }
           };

            var book2 = new Book()
            {
                Title = "Jane Eyre",
                ISBN = "87897897",
                Price = 60000,
                Year = 1847,
                LastStock = DateTime.Now.AddDays(-5),
                Language = new Language()
                {
                    Name = "English"
                },
                Authors = new List<Author>()
               {
                   new Author()
                   {
                       Name = "Charlotte Brontë"
                   },
                   
               }
            };


            var book3 = new Book()
            {
                Title = "White Fang",
                ISBN = "43442424",
                Price = 50000,
                Year = 1936,
                LastStock = DateTime.Now.AddDays(-13),
                Language = new Language()
                {
                    Name = "English"
                },
                Authors = new List<Author>()
               {
                   new Author()
                   {
                       Name = "Jack London"
                   },
                     new Author()
                   {
                       Name = "Philippe Mignon"
                   },
               }
            };

            var book4 = new Book()
            {
                Title = "The Lost Symbol",
                ISBN = "43442424",
                Price = 3500000,
                Year = 2009,
                LastStock = DateTime.Now.AddDays(-17),
                Language = new Language()
                {
                    Name = "Persian"
                },
                Authors = new List<Author>()
               {
                   new Author()
                   {
                       Name = "Dan Brown"
                   },
                     new Author()
                   {
                       Name = "Mehrdad"
                   },
               }
            };

            var book7 = new Book()
            {
                Title = "The Lost Symbol",
                ISBN = "43442424",
                Price = 47000000,
                Year = 2009,
                LastStock = DateTime.Now.AddDays(-56),
                Language = new Language()
                {
                    Name = "Persian"
                },
                Authors = new List<Author>()
               {
                   new Author()
                   {
                       Name = "Dan Brown"
                   },
                     new Author()
                   {
                       Name = "Mehrdad"
                   },
               }
            };
            var book5= new Book()
            {
                Title = "The Help",
                ISBN = "45345e3er3",
                Price = 9000000,
                Year = 2009,
                LastStock = DateTime.Now.AddDays(-2),
                Language = new Language()
                {
                    Name = "Enlish"
                },
                Authors = new List<Author>()
               {
                   new Author()
                   {
                       Name = "Kathryn Stockett"
                   },
                    
               }
            };

            var book6 = new Book()
            {
                Title = "City of Glass",
                ISBN = "454534545",
                Price = 500000,
                Year = 2009,
                LastStock = DateTime.Now,
                Language = new Language()
                {
                    Name = "Persian"
                },
                Authors = new List<Author>()
               {
                   new Author()
                   {
                       Name = "Cassandra Clare"
                   },
                   new Author()
                   {
                       Name = "Ali"
                   },

               }
            };
            var books = new List<Book> {book, book2, book3, book4, book5, book6,book7};

            collection.InsertManyAsync(books);

            var client = new MongoClient();
            var db = client.GetDatabase("publisher");
            var collection = db.GetCollection<Book>("books");
            
            var filter=new BsonDocument();
            var docs = collection.Find(filter).ToList();
            foreach (var book in docs)
            {
                Console.WriteLine(book.Title + " By "+ book.Authors[0].Name);
            }

Gone With Wind By Margaret Mitchell
Jane Eyre By Charlotte Brontë
White Fang By Jack London
The Lost Symbol By Dan Brown
The Help By Kathryn Stockett
City of Glass By Cassandra Clare
The Lost Symbol By Dan Brown

var filter = Builders<Book>.Filter.Eq("Year", 2009);

            var docs = collection.Find(filter).ToList();
            foreach (var book in docs)
            {
                Console.WriteLine(book.Title + " By "+ book.Authors[0].Name);
            }

The Lost Symbol By Dan Brown
The Help By Kathryn Stockett
City of Glass By Cassandra Clare
The Lost Symbol By Dan Brown

   // var filter=new BsonDocument();
            var filterBuilder = Builders<Book>.Filter;
            var filter= filterBuilder.Eq("Year", 2009) | filterBuilder.Gte("Price",700000);

            var docs = collection.Find(filter).ToList();
            foreach (var book in docs)
            {
                Console.WriteLine(book.Title + " By "+ book.Authors[0].Name);
            }

Gone With Wind By Margaret Mitchell
White Fang By Jack London
The Lost Symbol By Dan Brown
The Help By Kathryn Stockett
City of Glass By Cassandra Clare
The Lost Symbol By Dan Brown

var docs = collection.AsQueryable().Where(x => x.Year == 2009 || x.Price <= 50000).ToList();

  var sort = Builders<Book>.Sort.Ascending("Title").Descending("Price");
            var docs = collection.Find(filter).Sort(sort).ToList();
            foreach (var book in docs)
            {
                Console.WriteLine(book.Title + " By "+ book.Authors[0].Name);
            }

City of Glass By Cassandra Clare
Gone With Wind By Margaret Mitchell
The Help By Kathryn Stockett
The Lost Symbol By Dan Brown
The Lost Symbol By Dan Brown
White Fang By Jack London