var urlHelper = new UrlHelper(htmlHelper.ViewContext.RequestContext);
var url = urlHelper.Action("Home", "Index");

UrlHelper.GenerateUrl(null, actionName, controllerName,
                               null, null, null, routeValues, htmlHelper.RouteCollection, 
                               htmlHelper.ViewContext.RequestContext, true);

 PM> install-package Newtonsoft.Json

 var roles = new List<string>
{
   "Admin",
   "User"
};
string json = JsonConvert.SerializeObject(roles, Formatting.Indented);

 var jsonString = JsonConvert.SerializeObject(new
{
   Id =1,
   Name = "Test"
}, Formatting.Indented);

var jsonData = JsonConvert.SerializeObject(new
{
   Id = 1,
   Name = "Test",
   DateTime = DateTime.Now
}, new JsonSerializerSettings
{
   Formatting = Formatting.Indented,
   Converters =
   {
      new JavaScriptDateTimeConverter()
   }
});

 {
  "Id": 1,
  "Name": "Test",
  "DateTime": new Date(1409821985245)
}

using (var stream = File.CreateText(@"c:\output.json"))
{
    var jsonSerializer = new JsonSerializer
   {
      Formatting = Formatting.Indented
   };
   jsonSerializer.Serialize(stream, new
   {
     Id = 1,
     Name = "Test",
     DateTime = DateTime.Now
   });
}

public class User
{
   public int Id { set; get; }
   public string Name { set; get; }
   public DateTime DateTime { set; get; }
}

 var user = JsonConvert.DeserializeObject<User>(jsonData);

var user = JsonConvert.DeserializeObject<User>(jsonData, new JsonSerializerSettings
{
   Converters = {  new JavaScriptDateTimeConverter() }
});

 JsonConvert.PopulateObject(jsonData, user);

var jsonData = JsonConvert.SerializeObject(object, new JsonSerializerSettings
{
   NullValueHandling = NullValueHandling.Ignore,
   Formatting = Formatting.Indented
});

public class Employee
{
    public string Name { set; get; }
}

public class Manager : Employee
{
    public IList<Employee> Reports { set; get; }
}

 var employee = new Employee { Name = "User1" };
var manager1 = new Manager { Name = "User2" };
var manager2 = new Manager { Name = "User3" };
manager1.Reports = new[] { employee, manager2 };
manager2.Reports = new[] { employee };

 var list = JsonConvert.SerializeObject(manager1, Formatting.Indented);

{
  "Reports": [
    {
      "Name": "User1"
    },
    {
      "Reports": [
        {
          "Name": "User1"
        }
      ],
      "Name": "User3"
    }
  ],
  "Name": "User2"
}

var list = JsonConvert.SerializeObject(manager1, new JsonSerializerSettings
{
   Formatting = Formatting.Indented,
   TypeNameHandling = TypeNameHandling.Objects,
   PreserveReferencesHandling = PreserveReferencesHandling.Objects
});
 

{
  "$id": "1",
  "$type": "JsonNetTests.Manager, JsonNetTests",
  "Reports": [
    {
      "$id": "2",
      "$type": "JsonNetTests.Employee, JsonNetTests",
      "Name": "User1"
    },
    {
      "$id": "3",
      "$type": "JsonNetTests.Manager, JsonNetTests",
      "Reports": [
        {
          "$ref": "2"
        }
      ],
      "Name": "User3"
    }
  ],
  "Name": "User2"
}

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

   [JsonIgnore]
   public string Name { set; get; }

   public DateTime DateTime { set; get; }
}

[JsonProperty(PropertyName = "m_name", NullValueHandling = NullValueHandling.Ignore)]
public string Name { set; get; }

[JsonObject(MemberSerialization.OptIn)]
public class User
{
    public int Id { set; get; }

    [JsonProperty]
    public string Name { set; get; }
 
    public DateTime DateTime { set; get; }
}

[JsonConverter(typeof(JavaScriptDateTimeConverter))]
public DateTime DateTime { set; get; }

public class HtmlColor
{
   public int Red { set; get; }
   public int Green { set; get; }
   public int Blue { set; get; }
}

var colorJson = JsonConvert.SerializeObject(new HtmlColor
{
  Red = 255,
  Green = 0,
  Blue = 0
}, Formatting.Indented);

    public class HtmlColorConverter : JsonConverter
    {

        public override bool CanConvert(Type objectType)
        {
            return objectType == typeof(HtmlColor);
        }

        public override object ReadJson(JsonReader reader, Type objectType,
                                        object existingValue, JsonSerializer serializer)
        {
            throw new NotSupportedException();
        }

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            var color = value as HtmlColor;
            if (color == null)
                return;

            writer.WriteValue("#" + color.Red.ToString("X2")
                + color.Green.ToString("X2") + color.Blue.ToString("X2"));
        }
    }

var colorJson = JsonConvert.SerializeObject(new HtmlColor
{
  Red = 255,
  Green = 0,
  Blue = 0
},  new JsonSerializerSettings
    {
      Formatting = Formatting.Indented,
      Converters = { new HtmlColorConverter() }
    });   

using System;

namespace jqGrid13.Models
{
    public class BlogComment
    {
        // Other properties 
        public int Id { set; get; }
        public string Body { set; get; }
        public DateTime AddDateTime { set; get; }

        // for treeGridModel: 'adjacency'
        public int? ParentId { get; set; }
        public bool IsNotExpandable { get; set; }
        public bool IsExpanded { get; set; }
    }
}

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Web.Mvc;
using jqGrid13.Models;
using JqGridHelper.DynamicSearch; // for dynamic OrderBy
using JqGridHelper.Models;
using JqGridHelper.Utils;

namespace jqGrid13.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        public ActionResult GetComments(JqGridRequest request, int? nodeid, int? parentid, int? n_level)
        {
            var list = BlogCommentsDataSource.LatestBlogComments;

            // در این حالت خاص فعلا در نگارش جای جی‌کیو‌گرید صفحه بندی کار نمی‌کند و فعال نیست و محاسبات ذیل اهمیتی ندارند
            var pageIndex = request.page - 1;
            var pageSize = request.rows;
            var totalRecords = list.Count;
            var totalPages = (int)Math.Ceiling(totalRecords / (float)pageSize);

            var productsQuery = list.AsQueryable();
            
            if (nodeid == null)
            {
                productsQuery = productsQuery.Where(x => x.ParentId == null);
            }
            else
            {
                productsQuery = productsQuery.Where(x => x.ParentId == nodeid.Value);
            }

            var products = productsQuery.OrderBy(request.sidx + " " + request.sord)
                                        .Skip(pageIndex * pageSize)
                                        .Take(pageSize)
                                        .ToList();


            var newLevel = n_level == null ? 0 : n_level.Value + 1;
            var productsData = new JqGridData
            {
                Total = totalPages,
                Page = request.page,
                Records = totalRecords,
                Rows = (products.Select(comment => new JqGridRowData
                {
                    Id = comment.Id,
                    RowCells = new List<object> 
                               {
                                   comment.Id,
                                   comment.Body,
                                   comment.AddDateTime.ToPersianDate(),
                                   // اطلاعات خاص نمایش درختی به ترتیب
           newLevel,
           comment.ParentId == null ? "" : comment.ParentId.Value.ToString(CultureInfo.InvariantCulture),
           comment.IsNotExpandable,
           comment.IsExpanded
                               }
                })).ToList()
            };
            return Json(productsData, JsonRequestBehavior.AllowGet);
        }
    }
}

            $('#list').jqGrid({
                caption: "آزمایش سیزدهم",
                // .... مانند قبل
                treeGrid: true,
                treeGridModel: 'adjacency',
                ExpandColumn: '@(StronglyTyped.PropertyName<BlogComment>(x => x.Body))'
            }).jqGrid('gridResize', { minWidth: 400 });
        });

using (var capture = new CvCapture(@"..\..\Videos\drop.avi"))
{
     var image = capture.QueryFrame();
}

IplImage image;
while ((image = Capture.QueryFrame()) != null)
{
    _pictureBoxIpl1.RefreshIplImage(image);
 
    Thread.Sleep(interval);
    Application.DoEvents();
}

timer = new Timer();
timer.Interval = (int)(1000 / Capture.Fps);
timer.Tick += Timer_Tick;

private void FrmMain_Load(object sender, System.EventArgs e)
{
    _pictureBoxIpl1 = new PictureBoxIpl
    {
        AutoSize = true
    };
    flowLayoutPanel1.Controls.Add(_pictureBoxIpl1);
}

private void BtnStart_Click(object sender, System.EventArgs e)
{
    if (_worker != null && _worker.IsBusy)
    {
        return;
    }
 
    _worker = new BackgroundWorker
    {
        WorkerReportsProgress = true,
        WorkerSupportsCancellation = true
    };
    _worker.DoWork += workerDoWork;
    _worker.ProgressChanged += workerProgressChanged;
    _worker.RunWorkerCompleted += workerRunWorkerCompleted;
    _worker.RunWorkerAsync();
 
    BtnStart.Enabled = false;
}

private void workerDoWork(object sender, DoWorkEventArgs e)
{
    using (var capture = new CvCapture(@"..\..\Videos\drop.avi"))
    {
        var interval = (int)(1000 / capture.Fps);
 
        IplImage image;
        while ((image = capture.QueryFrame()) != null &&
                _worker != null && !_worker.CancellationPending)
        {
            _worker.ReportProgress(0, image);
            Thread.Sleep(interval);
        }
    }
}
 
private void workerProgressChanged(object sender, ProgressChangedEventArgs e)
{
    var image = e.UserState as IplImage;
    if (image == null) return;
 
    Cv.Not(image, image);
    _pictureBoxIpl1.RefreshIplImage(image);
}
 
private void workerRunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
    _worker.Dispose();
    _worker = null;
    BtnStart.Enabled = true;
}

private void BtnStop_Click(object sender, System.EventArgs e)
{
    if (_worker != null)
    {
        _worker.CancelAsync();
        _worker.Dispose();
    }
    BtnStart.Enabled = true;
}

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