Thread.CurrentThread.CurrentUICulture = new CultureInfo("fa-IR");
Thread.CurrentThread.CurrentUICulture = CultureInfo.CreateSpecificCulture("fa-IR");

[Required(ErrorMessageResourceName = "ResourceKeyName", ErrorMessageResourceType = typeof(<SolutionName>.Resources.<ResourceClassName>))]

public class LocalizationDisplayNameAttribute : DisplayNameAttribute
  {
    private readonly DisplayAttribute _display;
    public LocalizationDisplayNameAttribute(string resourceName, Type resourceType)
    {
      _display = new DisplayAttribute { ResourceType = resourceType, Name = resourceName };
    }
    public override string DisplayName
    {
      get
      {
        try
        {
          return _display.GetName();
        }
        catch (Exception)
        {
          return _display.Name;
        }
      }
    }
  }

public class LocalizationDisplayNameAttribute : DisplayNameAttribute
{
    private readonly PropertyInfo nameProperty;
    public LocalizationDisplayNameAttribute(string displayNameKey, Type resourceType = null)
        : base(displayNameKey)
    {
        if (resourceType != null)
            nameProperty = resourceType.GetProperty(base.DisplayName, BindingFlags.Static | BindingFlags.Public);
    }
    public override string DisplayName
    {
        get
        {
            if (nameProperty == null) base.DisplayName;
            return (string)nameProperty.GetValue(nameProperty.DeclaringType, null);
        }
    }
}

[LocalizationDisplayName("ResourceKeyName", typeof(<SolutionName>.Resources.<ResourceClassName>))]

public class BaseController : Controller
  {
    private const string LanguageCookieName = "MyLanguageCookieName";
    protected override void ExecuteCore()
    {
      var cookie = HttpContext.Request.Cookies[LanguageCookieName];
      string lang;
      if (cookie != null)
      {
        lang = cookie.Value;
      }
      else
      {
        lang = ConfigurationManager.AppSettings["DefaultCulture"] ?? "fa-IR";
        var httpCookie = new HttpCookie(LanguageCookieName, lang) { Expires = DateTime.Now.AddYears(1) };
        HttpContext.Response.SetCookie(httpCookie);
      }
      Thread.CurrentThread.CurrentUICulture = CultureInfo.CreateSpecificCulture(lang);
      base.ExecuteCore();
    }
  }

public class LocalizationActionFilterAttribute : ActionFilterAttribute
  {
    private const string LanguageCookieName = "MyLanguageCookieName";
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
      var cookie = filterContext.HttpContext.Request.Cookies[LanguageCookieName];
      string lang;
      if (cookie != null)
      {
        lang = cookie.Value;
      }
      else
      {
        lang = ConfigurationManager.AppSettings["DefaultCulture"] ?? "fa-IR";
        var httpCookie = new HttpCookie(LanguageCookieName, lang) { Expires = DateTime.Now.AddYears(1) };
        filterContext.HttpContext.Response.SetCookie(httpCookie);
      }
      Thread.CurrentThread.CurrentUICulture = CultureInfo.CreateSpecificCulture(lang);
      base.OnActionExecuting(filterContext);
    }
  }

<select id="langs" onchange="languageChanged()">
  <option value="fa-IR">فارسی</option>
  <option value="en-US">انگلیسی</option>
</select>
<script type="text/javascript">
  function languageChanged() {
    setCookie("MyLanguageCookieName", $('#langs').val(), 365);
    window.location.reload();
  }
  document.ready = function () {
    $('#langs').val(getCookie("MyLanguageCookieName"));
  };
  function setCookie(name, value, exdays, path) {
    var exdate = new Date();
    exdate.setDate(exdate.getDate() + exdays);
    var newValue = escape(value) + ((exdays == null) ? "" : "; expires=" + exdate.toUTCString()) + ((path == null) ? "" : "; path=" + path) ;
    document.cookie = name + "=" + newValue;
  }
  function getCookie(name) {
    var i, x, y, cookies = document.cookie.split(";");
    for (i = 0; i < cookies.length; i++) {
      x = cookies[i].substr(0, cookies[i].indexOf("="));
      y = cookies[i].substr(cookies[i].indexOf("=") + 1);
      x = x.replace(/^\s+|\s+$/g, "");
      if (x == name) {
        return unescape(y);
      }
    }
  }
</script> 

GET https://www.dntips.ir HTTP/1.1
...
Accept-Language: fa-IR,en-US;q=0.5
...

Accept-Language: fa-IR,fa;q=0.8,en-US;q=0.5,ar-BH;q=0.3

<system.web>
    <globalization enableClientBasedCulture="true" uiCulture="auto" culture="auto"></globalization>
</system.web>

var langs = filterContext.HttpContext.Request.UserLanguages;

routes.MapRoute(
    "Localization", // Route name
    "{lang}/{controller}/{action}/{id}", // URL with parameters
    new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);

public class BaseController : Controller
{
  protected override void ExecuteCore()
  {
    var lang = RouteData.Values["lang"];
    if (lang != null && !string.IsNullOrWhiteSpace(lang.ToString()))
    {
      Thread.CurrentThread.CurrentUICulture = CultureInfo.CreateSpecificCulture(lang.ToString());
    }
    base.ExecuteCore();
  }
}

public class BaseController : Controller
{
  protected override void OnActionExecuted(ActionExecutedContext context)
  {
    var view = context.Result as ViewResultBase;
    if (view == null) return; // not a view
    var viewName = view.ViewName;
    view.ViewName = GetGlobalizationViewName(viewName, context);
    base.OnActionExecuted(context);
  }
  private static string GetGlobalizationViewName(string viewName, ControllerContext context)
  {
    var cultureName = Thread.CurrentThread.CurrentUICulture.Name;
    if (cultureName == "en-US") return viewName; // default culture
    if (string.IsNullOrEmpty(viewName))
      return context.RouteData.Values["action"] + "." + cultureName; // "Index.fa"
    int i;
    if ((i = viewName.IndexOf('.')) > 0) // ex: Index.cshtml
      return viewName.Substring(0, i + 1) + cultureName + viewName.Substring(i); // "Index.fa.cshtml"
    return viewName + "." + cultureName; // "Index" ==> "Index.fa"
  }
}

public sealed class RazorGlobalizationViewEngine : RazorViewEngine
  {
    protected override IView CreatePartialView(ControllerContext controllerContext, string partialPath)
    {
      return base.CreatePartialView(controllerContext, GetGlobalizationViewPath(controllerContext, partialPath));
    }
    protected override IView CreateView(ControllerContext controllerContext, string viewPath, string masterPath)
    {
      return base.CreateView(controllerContext, GetGlobalizationViewPath(controllerContext, viewPath), masterPath);
    }
    private static string GetGlobalizationViewPath(ControllerContext controllerContext, string viewPath)
    {
      //var controllerName = controllerContext.RouteData.GetRequiredString("controller");
      var request = controllerContext.HttpContext.Request;
      var lang = request.Cookies["MyLanguageCookie"];
      if (lang != null && !string.IsNullOrEmpty(lang.Value) && lang.Value != "en-US")
      {
        var localizedViewPath = Regex.Replace(viewPath, "^~/Views/", string.Format("~/Views/Globalization/{0}/", lang.Value));
        if (File.Exists(request.MapPath(localizedViewPath))) viewPath = localizedViewPath;
      }
      return viewPath;
    }

protected void Application_Start()
{
  ViewEngines.Engines.Clear();
  ViewEngines.Engines.Add(new RazorGlobalizationViewEngine());
}

using System;
using System.Collections.Generic;

namespace MvcApplication17.Models
{
    public class Employee
    {
        public int Id { set; get; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public DateTime AddDate { get; set; }
        public double Salary { get; set; }
        public IList<Project> Projects { get; set; }
    }
}

namespace MvcApplication17.Models
{
    public class Project
    {
        public int Id { set; get; }
        public string Name { set; get; }
    }
}

using System;
using System.Collections.Generic;

namespace MvcApplication17.Models
{
    public static class EmployeeDataSource
    {
        public static IList<Employee> CreateEmployees()
        {
            var list = new List<Employee>();
            var rnd = new Random();
            for (int i = 1; i <= 1000; i++)
            {
                list.Add(new Employee
                    {
                        Id = i + 1000,
                        FirstName = "fName " + i,
                        LastName = "lName " + i,
                        AddDate = DateTime.Now.AddYears(-rnd.Next(1, 10)),
                        Salary = rnd.Next(400, 3000),
                        Projects = CreateRandomProjects()
                    });
            }
            return list;
        }

        private static IList<Project> CreateRandomProjects()
        {
            var list = new List<Project>();
            var rnd = new Random();
            for (int i = 0; i < rnd.Next(1, 7); i++)
            {
                list.Add(new Project
                {
                    Id = i,
                    Name = "Project " + i
                });
            }
            return list;
        }
    }
}

using System.Web.Mvc;
using MvcApplication17.Models;

namespace MvcApplication17.Controllers
{
    public class HomeController : Controller
    {
        [HttpPost]
        public ActionResult Delete(int? id)
        {
            return RedirectToAction("Index");
        }

        [HttpGet]
        public ActionResult Edit(int? id)
        {
            return View();
        }

        [HttpGet]
        public ActionResult Index(string sort, string sortdir, int? page = 1)
        {
            var list = EmployeeDataSource.CreateEmployees();
            return View(list);
        }
    }
}

http://localhost:3034/?sort=LastName&sortdir=ASC&page=3

@using System.Globalization
@model IList<MvcApplication17.Models.Employee>
           
@{
    ViewBag.Title = "Index";
}

@helper WebGridPageFirstItem(WebGrid grid)
{
    @(((grid.PageIndex + 1) * grid.RowsPerPage) - (grid.RowsPerPage - 1));
}

@helper WebGridPageLastItem(WebGrid grid)
{
    if (grid.TotalRowCount < (grid.PageIndex + 1 * grid.RowsPerPage))
    {
      @grid.TotalRowCount;
    }
    else
    {
      @((grid.PageIndex + 1) * grid.RowsPerPage);
    }
}

<h2>Employees List</h2>

@{ 
    var grid = new WebGrid(
        source: Model,
        canPage: true,
        rowsPerPage: 10,
        canSort: true,
        defaultSort: "FirstName"
    );
    var salaryPageSum = 0;
    var taxPageSum = 0;
    var rowIndex = ((grid.PageIndex + 1) * grid.RowsPerPage) - (grid.RowsPerPage - 1);
}

<div id="container">
    @grid.GetHtml(
            tableStyle: "webgrid",
            headerStyle: "webgrid-header",
            footerStyle: "webgrid-footer",
            alternatingRowStyle: "webgrid-alternating-row",
            selectedRowStyle: "webgrid-selected-row",
            rowStyle: "webgrid-row-style",
            htmlAttributes: new { id = "MyGrid" },
            mode: WebGridPagerModes.All,
            columns: grid.Columns(
                 grid.Column(header: "#",
                             style: "text-align-center-col",
                             format: @<text>@(rowIndex++)</text>),
                 grid.Column(columnName: "FirstName", header: "First Name",
                             format: @<span style='font-weight: bold'>@item.FirstName</span>,
                             style: "text-align-center-col"),
                 grid.Column(columnName: "LastName", header: "Last Name"),
                 grid.Column(header: "Image",
                             style: "text-align-center-col",
                             format: @<text><img alt="@item.Id" src="@Url.Content("~/images/" + @item.Id + ".jpg")" /></text>),
                 grid.Column(columnName: "AddDate", header: "Start",
                             style: "text-align-center-col",
                             format: item =>
                             {
                                 int ym = item.AddDate.Year;
                                 int mm = item.AddDate.Month;
                                 int dm = item.AddDate.Day;
                                 var persianCalendar = new PersianCalendar();
                                 int ys = persianCalendar.GetYear(new DateTime(ym, mm, dm, new GregorianCalendar()));
                                 int ms = persianCalendar.GetMonth(new DateTime(ym, mm, dm, new GregorianCalendar()));
                                 int ds = persianCalendar.GetDayOfMonth(new DateTime(ym, mm, dm, new GregorianCalendar()));
                                 return ys + "/" + ms.ToString("00") + "/" + ds.ToString("00");

                             }),
                 grid.Column(columnName: "Salary", header: "Salary",
                             format: item =>
                             {
                                 salaryPageSum += item.Salary;
                                 return string.Format("${0:n0}", item.Salary);
                             },
                             style: "text-align-center-col"),
                 grid.Column(header: "Tax", canSort: true,
                             format: item =>
                             {
                                 var tax = item.Salary * 0.2;
                                 taxPageSum += tax;
                                 return string.Format("${0:n0}", tax);
                             }),
                 grid.Column(header: "Projects", columnName: "Projects",
                             style: "text-align-center-col",
                             format: item =>
                             {
                                 var subGrid = new WebGrid(
                                                        source: item.Projects,
                                                        canPage: false,
                                                        canSort: false
                                                        );
                                 return subGrid.GetHtml(
                                                        htmlAttributes: new { id = "MySubGrid" },
                                                        tableStyle: "webgrid",
                                                        headerStyle: "webgrid-header",
                                                        footerStyle: "webgrid-footer",
                                                        alternatingRowStyle: "webgrid-alternating-row",
                                                        selectedRowStyle: "webgrid-selected-row",
                                                        rowStyle: "webgrid-row-style"
                                     );
                             }),
                 grid.Column(header: "",
                             style: "text-align-center-col",
                             format: item => @Html.ActionLink(linkText: "Edit", actionName: "Edit",
                                                              controllerName: "Home", routeValues: new { id = item.Id },
                                                              htmlAttributes: null)),
                 grid.Column(header: "",
                             format: @<form action="/Home/Delete/@item.Id" method="post"><input type="submit"
                                            onclick="return confirm('Do you want to delete this record?');"
                                            value="Delete"/></form>),
                 grid.Column(header: "", format: item => item.GetSelectLink("Select"))
                      )
                  )

    <strong>Page:</strong> @(grid.PageIndex + 1) / @grid.PageCount, 
    <strong>Records:</strong> @WebGridPageFirstItem(@grid) - @WebGridPageLastItem(@grid) of @grid.TotalRowCount

    @*
    @if (@grid.HasSelection)
    {
        @RenderPage("~/views/path/_partial_view.cshtml", new { Employee = grid.SelectedRow })
    }
    *@
</div>

@section script{
<script type="text/javascript">
    $(function () {
        $('#MyGrid tbody:first').append(
        '<tr class="total-row"><td></td>\
         <td></td><td></td><td></td>\
         <td><strong>Total:</strong></td>\
         <td>@string.Format("${0:n0}", @salaryPageSum)</td>\
         <td>@string.Format("${0:n0}", @taxPageSum)</td>\
         <td></td><td></td><td></td></tr>');
    });
</script>
}

@{ 
    var grid = new WebGrid(
        source: Model,
        canPage: true,
        rowsPerPage: 10,
        canSort: true,
        defaultSort: "FirstName"
    );
    var salaryPageSum = 0;
    var taxPageSum = 0;
    var rowIndex = ((grid.PageIndex + 1) * grid.RowsPerPage) - (grid.RowsPerPage - 1);
}

tableStyle: "webgrid",
headerStyle: "webgrid-header",
footerStyle: "webgrid-footer",
alternatingRowStyle: "webgrid-alternating-row",
selectedRowStyle: "webgrid-selected-row",
rowStyle: "webgrid-row-style",
htmlAttributes: new { id = "MyGrid" },

<div id="container">
      <table class="webgrid" id="MyGrid">
        <thead>
          <tr class="webgrid-header">

/* Styles for WebGrid
-----------------------------------------------------------*/
.webgrid
{
 width: 100%;
 margin: 0px;
 padding: 0px;
 border: 0px;
 border-collapse: collapse;
 font-family: Tahoma;
 font-size: 9pt;
}

.webgrid a
{
 color: #000;
}

.webgrid-header
{
 padding: 0px 5px;
 text-align: center;
 border-bottom: 2px solid #739ace;
 height: 20px;
 border-top: 2px solid #D6E8FF;
 border-left: 2px solid #D6E8FF;
 border-right: 2px solid #D6E8FF;
}

.webgrid-header th
{
 background-color: #eaf0ff;
 border-right: 1px solid #ddd;
}

.webgrid-footer
{
 padding: 6px 5px;
 text-align: center;
 background-color: #e8eef4;
 border-top: 2px solid #3966A2;
 height: 25px;
 border-bottom: 2px solid #D6E8FF;
 border-left: 2px solid #D6E8FF;
 border-right: 2px solid #D6E8FF;
}

.webgrid-alternating-row
{
 height: 22px;
 background-color: #f2f2f2;
 border-bottom: 1px solid #d2d2d2;
 border-left: 2px solid #D6E8FF;
 border-right: 2px solid #D6E8FF;
}

.webgrid-row-style
{
 height: 22px;
 border-bottom: 1px solid #d2d2d2;
 border-left: 2px solid #D6E8FF;
 border-right: 2px solid #D6E8FF;
}

.webgrid-selected-row
{
 font-weight: bold;
}

.text-align-center-col
{
 text-align: center;
}

.total-row
{
 background-color:#f9eef4;
}

[Flags]
public enum WebGridPagerModes
{
        Numeric = 1,
        //
        NextPrevious = 2,
        //
        FirstLast = 4,
        //
        All = 7,
}

grid.Column(columnName: "FirstName", header: "First Name",
                             format: @<span style='font-weight: bold'>@item.FirstName</span>,
                             style: "text-align-center-col"),
grid.Column(columnName: "LastName", header: "Last Name"),

Func<dynamic, object> format

format: @<span style='font-weight: bold'>@item.FirstName</span>
or
format: item =>
                     {
                          salaryPageSum += item.Salary;
                           return string.Format("${0:n0}", item.Salary);
                      }

grid.Column(header: "#",
                 style: "text-align-center-col",
                 format: @<text>@(rowIndex++)</text>),

grid.Column(header: "Image",
                  style: "text-align-center-col",
                  format: @<text><img alt="@item.Id" src="@Url.Content("~/images/" + @item.Id + ".jpg")" /></text>),

grid.Column(columnName: "AddDate", header: "Start",
                  style: "text-align-center-col",
                  format: item =>
                  {
                       int ym = item.AddDate.Year;
                       int mm = item.AddDate.Month;
                       int dm = item.AddDate.Day;
                       var persianCalendar = new PersianCalendar();
                       int ys = persianCalendar.GetYear(new DateTime(ym, mm, dm, new GregorianCalendar()));
                       int ms = persianCalendar.GetMonth(new DateTime(ym, mm, dm, new GregorianCalendar()));
                       int ds = persianCalendar.GetDayOfMonth(new DateTime(ym, mm, dm, new GregorianCalendar()));
                       return ys + "/" + ms.ToString("00") + "/" + ds.ToString("00");
                    }),

grid.Column(columnName: "Salary", header: "Salary",
                 format: item =>
                             {
                                 salaryPageSum += item.Salary;
                                 return string.Format("${0:n0}", item.Salary);
                             },
                             style: "text-align-center-col"),
grid.Column(header: "Tax", canSort: true,
                             format: item =>
                             {
                                 var tax = item.Salary * 0.2;
                                 taxPageSum += tax;
                                 return string.Format("${0:n0}", tax);
                             }),

grid.Column(header: "Projects", columnName: "Projects",
                  style: "text-align-center-col",
                  format: item =>
                  {
                                 var subGrid = new WebGrid(
                                                        source: item.Projects,
                                                        canPage: false,
                                                        canSort: false
                                                        );
                                 return subGrid.GetHtml(
                                                        htmlAttributes: new { id = "MySubGrid" },
                                                        tableStyle: "webgrid",
                                                        headerStyle: "webgrid-header",
                                                        footerStyle: "webgrid-footer",
                                                        alternatingRowStyle: "webgrid-alternating-row",
                                                        selectedRowStyle: "webgrid-selected-row",
                                                        rowStyle: "webgrid-row-style"
                                     );
                       }),

grid.Column(header: "",
                  style: "text-align-center-col",
                   format: item => @Html.ActionLink(linkText: "Edit", actionName: "Edit",
                                                              controllerName: "Home", routeValues: new { id = item.Id },
                                                              htmlAttributes: null)),
grid.Column(header: "",
                  format: @<form action="/Home/Delete/@item.Id" method="post"><input type="submit"
                                            onclick="return confirm('Do you want to delete this record?');"
                                            value="Delete"/></form>),
grid.Column(header: "", format: item => item.GetSelectLink("Select"))

@if (@grid.HasSelection)
    {
        @RenderPage("~/views/path/_partial_view.cshtml", new { Employee = grid.SelectedRow })
    }

<strong>Page:</strong> @(grid.PageIndex + 1) / @grid.PageCount, 
    <strong>Records:</strong> @WebGridPageFirstItem(@grid) - @WebGridPageLastItem(@grid) of @grid.TotalRowCount

@section script{
<script type="text/javascript">
    $(function () {
        $('#MyGrid tbody:first').append(
        '<tr class="total-row"><td></td>\
         <td></td><td></td><td></td>\
         <td><strong>Total:</strong></td>\
         <td>@string.Format("${0:n0}", @salaryPageSum)</td>\
         <td>@string.Format("${0:n0}", @taxPageSum)</td>\
         <td></td><td></td><td></td></tr>');
    });
</script>
}

<head>
    <title>@ViewBag.Title</title>
    <link href="@Url.Content("~/Content/Site.css")" rel="stylesheet" type="text/css" />
    <script src="@Url.Content("~/Scripts/jquery-1.5.1.min.js")" type="text/javascript"></script>
    @RenderSection("script", required: false)
</head>

public void Configure(IApplicationBuilder app, IHostingEnvironment env)

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)

using Microsoft.Extensions.Hosting;