using System.Globalization;
using System.Resources;
using System.Web.Compilation;
namespace DbResourceProvider
{
  public abstract class BaseDbResourceProvider : IResourceProvider
  {
    private DbResourceManager _resourceManager;
    protected abstract DbResourceManager CreateResourceManager();
    private void EnsureResourceManager()
    {
      if (_resourceManager != null) return;
      _resourceManager = CreateResourceManager();
    }
    #region Implementation of IResourceProvider
    public object GetObject(string resourceKey, CultureInfo culture)
    {
      EnsureResourceManager();
      if (_resourceManager == null) return null;
      if (culture == null) culture = CultureInfo.CurrentUICulture;
      return _resourceManager.GetObject(resourceKey, culture);
    }
    public virtual IResourceReader ResourceReader { get { return null; } }
    #endregion
  }
}

using System;
using System.Resources;
namespace DbResourceProvider
{
  public class GlobalDbResourceProvider : BaseDbResourceProvider
  {
    private readonly string _classKey;
    public GlobalDbResourceProvider(string classKey)
    {
      _classKey = classKey;
    }
    #region Implementation of BaseDbResourceProvider
    protected override DbResourceManager CreateResourceManager()
    {
      return new DbResourceManager(_classKey);
    }
    public override IResourceReader ResourceReader
    {
      get { throw new NotSupportedException(); }
    }
    #endregion
  }
}

using System.Resources;
namespace DbResourceProvider
{
  public class LocalDbResourceProvider : BaseDbResourceProvider
  {
    private readonly string _virtualPath;
    public LocalDbResourceProvider(string virtualPath)
    {
      _virtualPath = virtualPath;
    }
    #region Implementation of BaseDbResourceProvider
    protected override DbResourceManager CreateResourceManager()
    {
      return new DbResourceManager(_virtualPath);
    }
    public override IResourceReader ResourceReader
    {
      get { return new DbResourceReader(_virtualPath); }
    }
    #endregion
  }
}

using System.Globalization;
using DbResourceProvider.Data;
namespace DbResourceProvider
{
  public class DbResourceManager
  {
    private readonly string _resourceName;
    public DbResourceManager(string resourceName)
    {
      _resourceName = resourceName;
    }
    public object GetObject(string resourceKey, CultureInfo culture)
    {
      var data = new ResourceData();
      return data.GetResource(_resourceName, resourceKey, culture.Name).Value;
    }
  }
}

using System.Collections;
using System.Resources;
using System.Security;
using DbResourceProvider.Data;
namespace DbResourceProvider
{
  public class DbResourceReader : IResourceReader
  {
    private readonly string _resourceName;
    private readonly string _culture;
    public DbResourceReader(string resourceName, string culture = "")
    {
      _resourceName = resourceName;
      _culture = culture;
    }
    #region Implementation of IResourceReader
    public void Close() { }
    public IDictionaryEnumerator GetEnumerator()
    {
      return new DbResourceEnumerator(new ResourceData().GetResources(_resourceName, _culture));
    }
    #endregion
    #region Implementation of IEnumerable
    IEnumerator IEnumerable.GetEnumerator()
    {
      return GetEnumerator();
    }
    #endregion
    #region Implementation of IDisposable
    public void Dispose()
    {
      Close();
    }
    #endregion
  }
}

using System.Collections;
using System.Collections.Generic;
using DbResourceProvider.Models;
namespace DbResourceProvider
{
  public sealed class DbResourceEnumerator : IDictionaryEnumerator
  {
    private readonly List<Resource> _resources;
    private int _dataPosition;
    public DbResourceEnumerator(List<Resource> resources)
    {
      _resources = resources;
      Reset();
    }
    public DictionaryEntry Entry
    {
      get
      {
        var resource = _resources[_dataPosition];
        return new DictionaryEntry(resource.Key, resource.Value);
      }
    }
    public object Key { get { return Entry.Key; } }
    public object Value { get { return Entry.Value; } }
    public object Current { get { return Entry; } }
    public bool MoveNext()
    {
      if (_dataPosition >= _resources.Count - 1) return false;
      ++_dataPosition;
      return true;
    }
    public void Reset()
    {
      _dataPosition = -1;
    }
  }
}

using System;

namespace System.Web.Mvc
{
    public abstract class WebViewPage<TModel> : WebViewPage
    {
        protected WebViewPage();
        public AjaxHelper<TModel> Ajax { get; set; }
        public HtmlHelper<TModel> Html { get; set; }
        public TModel Model { get; }
        public ViewDataDictionary<TModel> ViewData { get; set; }
        public override void InitHelpers();
        protected override void SetViewData(ViewDataDictionary viewData);
    }
}

<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>
    <script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"></script>    
</head>

namespace MvcApplication18.Models
{
    public class Employee
    {
        public int Id { set; get; }
        public string Name { set; get; }
    }
}

using System.Collections.Generic;

namespace MvcApplication18.Models
{
    public static class EmployeeDataSource
    {
        public static IList<Employee> CreateEmployees()
        {
            var list = new List<Employee>();
            for (int i = 0; i < 1000; i++)
            {
                list.Add(new Employee { Id = i + 1, Name = "name " + i });
            }
            return list;
        }
    }
}

using System.Linq;
using System.Web.Mvc;
using MvcApplication18.Models;

namespace MvcApplication18.Controllers
{
    public class HomeController : Controller
    {
        [HttpGet]
        public ActionResult Index()
        {
            return View();
        }

        [HttpPost] //for IE-8        
        public ActionResult EmployeeInfo(int? id)
        {
            if (!Request.IsAjaxRequest())
                return View("Error");

            if (!id.HasValue)
                return View("Error");

            var list = EmployeeDataSource.CreateEmployees();
            var data = list.Where(x => x.Id == id.Value).FirstOrDefault();
            if (data == null)
                return View("Error");

            return PartialView(viewName: "_EmployeeInfo", model: data);
        }
    }
}

@model MvcApplication18.Models.Employee

<strong>Name:</strong> @Model.Name

@{
    ViewBag.Title = "Index";
}
<h2>
    Index</h2>

<div id="EmployeeInfo">
    @Ajax.ActionLink(
     linkText: "Get Employee-1 info",
     actionName: "EmployeeInfo",
     controllerName: "Home",
     routeValues: new { id = 1 },
     ajaxOptions: new AjaxOptions
                  {
                      HttpMethod = "POST",
                      InsertionMode = InsertionMode.Replace,
                      UpdateTargetId = "EmployeeInfo",
                      LoadingElementId = "Progress"
                  })
</div>

<div id="Progress" style="display: none">
    <img src="@Url.Content("~/Content/images/loading.gif")" alt="loading..."  />
</div>

[AttributeUsage(AttributeTargets.Class|AttributeTargets.Method)]
public class AjaxOnlyAttribute : ActionFilterAttribute
{
  public override void OnActionExecuting(ActionExecutingContext filterContext)
  {
    if (filterContext.HttpContext.Request.IsAjaxRequest())
    {
      base.OnActionExecuting(filterContext);
    }
    else
    {
      throw new InvalidOperationException("This operation can only be accessed via Ajax requests");
    }
  }
}

[AjaxOnly]
public ActionResult SomeAjaxAction()
{
    return Content("Hello!");
}

<a data-ajax="true" data-ajax-loading="#Progress" data-ajax-method="POST" 
    data-ajax-mode="replace" data-ajax-update="#EmployeeInfo" 
    href="/Home/EmployeeInfo/1">Get Employee-1 info</a>

<a href="#" onclick="LoadEmployeeInfo()">Get Employee-1 info</a>
@section javascript
{
    <script type="text/javascript">
        function LoadEmployeeInfo() {
            showProgress();
            $.ajax({
                type: "POST",
                url: "/Home/EmployeeInfo",
                data: JSON.stringify({ id: 1 }),
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                // controller is returning a simple text, not json
                complete: function (xhr, status) {                    
                    var data = xhr.responseText;
                    if (status === 'error' || !data) {
                        //handleError                        
                    }
                    else {
                        $('#EmployeeInfo').html(data);
                    }
                    hideProgress();
                }
            });
        }
        function showProgress() {
            $('#Progress').css("display", "block");
        }
        function hideProgress() {
            $('#Progress').css("display", "none");
        }
    </script>
}

@RenderSection("javascript", required: false)

[HttpPost] //for IE-8        
public ActionResult EmployeeInfoData(int? id)
{
            if (!Request.IsAjaxRequest())
                return Json(false);

            if (!id.HasValue)
                return Json(false);

            var list = EmployeeDataSource.CreateEmployees();
            var data = list.Where(x => x.Id == id.Value).FirstOrDefault();
            if (data == null)
                return Json(false);

            return Json(data);
}

<a href="#" onclick="LoadEmployeeInfoData()">Get Employee-2 info</a>
@section javascript
{
    <script type="text/javascript">
        function LoadEmployeeInfoData() {
            showProgress();
            $.ajax({
                type: "POST",
                url: "/Home/EmployeeInfoData",
                data: JSON.stringify({ id: 1 }),
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                // controller is returning the json data
                success: function (result) {
                    if (result) {
                        alert(result.Id + ' - ' + result.Name);
                    }
                    hideProgress();
                },
                error: function (result) {
                    alert(result.status + ' ' + result.statusText);
                    hideProgress();
                }
            });
        }

        function showProgress() {
            $('#Progress').css("display", "block");
        }
        function hideProgress() {
            $('#Progress').css("display", "none");
        }
    </script>
}

[HttpPost] //for IE-8        
public ActionResult SearchEmployeeInfo(string data)
{
            if (!Request.IsAjaxRequest())
                return Content(string.Empty);

            if (string.IsNullOrWhiteSpace(data))
                return Content(string.Empty);

            var employeesList = EmployeeDataSource.CreateEmployees();
            var list = employeesList.Where(x => x.Name.Contains(data)).ToList();
            if (list == null || !list.Any())
                return Content(string.Empty);

            return PartialView(viewName: "_SearchEmployeeInfo", model: list);
}

@model IEnumerable<MvcApplication18.Models.Employee>

<table>
    <tr>
        <th>
            Name
        </th>
    </tr>

@foreach (var item in Model) {
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.Name)
        </td>
    </tr>
}

</table>

@using (Ajax.BeginForm(actionName: "SearchEmployeeInfo",
                       controllerName: "Home", 
                       ajaxOptions: new AjaxOptions
                                    {
                                         HttpMethod = "POST",
                                         InsertionMode = InsertionMode.Replace,
                                         UpdateTargetId = "EmployeeInfo",
                                         LoadingElementId = "Progress"
                                    }))
    {
      @Html.TextBox("data")
      <input type="submit" value="Search" />
    }

<form action="/Home/SearchEmployeeInfo" data-ajax="true" 
          data-ajax-loading="#Progress" data-ajax-method="POST" 
          data-ajax-mode="replace" data-ajax-update="#EmployeeInfo" 
          id="form0" method="post">
       <input id="data" name="data" type="text" value="" />
       <input type="submit" value="Search" />
</form>

$.validator.unobtrusive.parse("#{form-id}");

$.ajax
({
    url: "/{controller}/{action}/{id}",
    type: "get",
    success: function(data)
    {
        $.validator.unobtrusive.parse("#{form-id}");
    }
});

//or
$.get('/{controller}/{action}/{id}', function (data) { $.validator.unobtrusive.parse("#{form-id}"); });

@using (Ajax.BeginForm(
    "Action1",
    "Controller",
    null,
    new AjaxOptions { 
        OnSuccess = "onSuccess",
        UpdateTargetId = "result"
    },
    null)
)
{
    <input type="submit" value="Save" />
}

var onSuccess = function(result) {
    // enable unobtrusive validation for the contents
    // that was injected into the <div id="result"></div> node
    $.validator.unobtrusive.parse("#result");
};

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