Recipe[] recipes =
{
   new Recipe {Id = 1, Name = "Mashed Potato"},
   new Recipe {Id = 2, Name = "Crispy Duck"},
   new Recipe {Id = 3, Name = "Sachertorte"}
};

// inner sequence
Review[] reviews =
{
   new Review {RecipeId = 1, ReviewText = "Tasty!"},
   new Review {RecipeId = 1, ReviewText = "Not nice :("},
   new Review {RecipeId = 1, ReviewText = "Pretty good"},
   new Review {RecipeId = 2, ReviewText = "Too hard"},
   new Review {RecipeId = 2, ReviewText = "Loved it"}
};

  var query = recipes // recipes توالی خارجی
.Join(reviews, // reviewsتوالی داخلی
  (Recipe outerKey) => outerKey.Id, // کلید انخاب شده از توالی خارجی
  (Review innerKey) => innerKey.RecipeId, // کلید انتخاب شده از توالی داخلی
  // نحوه قالب بندی خروجی
  (recipe, review) => recipe.Name + " - " + review.ReviewText);

foreach (string item in query)
{
   Console.WriteLine(item);
}

var query = from recipe in recipes
join review in reviews
on
recipe.Id equals review.RecipeId
select new //انواع بی نام
{
    RecipeName = recipe.Name,
    RecipeReview = review.ReviewText
};

foreach (var item in query)
{
    Console.WriteLine(item.RecipeName + " - " + item.RecipeReview);
}

// outer sequence
Recipe[] recipes =
{
   new Recipe {Id = 1, Name = "Mashed Potato"},
   new Recipe {Id = 2, Name = "Crispy Duck"},
   new Recipe {Id = 3, Name = "Sachertorte"}
};

// inner sequence
Review[] reviews =
{
   new Review {RecipeId = 1, ReviewText = "Tasty!"},
   new Review {RecipeId = 1, ReviewText = "Not nice :("},
   new Review {RecipeId = 1, ReviewText = "Pretty good"},
   new Review {RecipeId = 2, ReviewText = "Too hard"},
   new Review {RecipeId = 2, ReviewText = "Loved it"}
};

var query = recipes
.GroupJoin(
reviews,
(Recipe outerKey) => outerKey.Id,//outer key
(Review innerKey) => innerKey.RecipeId,//inner key
(Recipe recipe, IEnumerable<Review> rev )=>تعریف ساختار گروه‌ها new
{
  RecipeName = recipe.Name,
  Reviews = rev
}
);

foreach (var item in query)
{
   Console.WriteLine($"Reviews for {item.RecipeName}");
   foreach (var review in item.Reviews)
   {
      Console.WriteLine($" - {review.ReviewText}");
   }
}

namespace jQueryMvcSample06.Models
{
    public class BlogPost
    {
        public int Id { set; get; }
        public string Title { set; get; }
        public string Body { set; get; }
    }
}

using System.Collections.Generic;
using jQueryMvcSample06.Models;

namespace jQueryMvcSample06.DataSource
{
    /// <summary>
    /// منبع داده فرضی جهت سهولت دموی برنامه
    /// </summary>
    public static class BlogPostDataSource
    {
        private static IList<BlogPost> _cachedItems;
        static BlogPostDataSource()
        {
            _cachedItems = createBlogPostsInMemoryDataSource();
        }

        /// <summary>
        /// هدف صرفا تهیه یک منبع داده آزمایشی ساده تشکیل شده در حافظه است
        /// </summary>        
        private static IList<BlogPost> createBlogPostsInMemoryDataSource()
        {
            var results = new List<BlogPost>();
            for (int i = 1; i < 30; i++)
            {
                results.Add(new BlogPost { Id = i, Title = "عنوان " + i, Body = "متن ... متن ... متن " + i});
            }
            return results;
        }

        public static IList<BlogPost> LatestBlogPosts
        {
            get { return _cachedItems; }
        }
    }
}

using System.Web.Mvc;
using System.Web.UI;
using jQueryMvcSample06.DataSource;
using jQueryMvcSample06.Security;

namespace jQueryMvcSample06.Controllers
{
    public class HomeController : Controller
    {
        [HttpGet]
        public ActionResult Index()
        {
            var postsList = BlogPostDataSource.LatestBlogPosts;
            return View(postsList);
        }

        [AjaxOnly]
        [HttpPost]
        [OutputCache(Location = OutputCacheLocation.None, NoStore = true)]
        public ActionResult DeleteRow(int? postId)
        {
            if (postId == null)
                return Content(null);

            //todo: delete post from db

            return Content("ok");
        }
    }
}

 data: JSON.stringify({ postId: postId }),

@model IEnumerable<jQueryMvcSample06.Models.BlogPost>
@{
    ViewBag.Title = "Index";
    var postUrl = Url.Action(actionName: "DeleteRow", controllerName: "Home");
}
<h2>
    حذف یک ردیف از اطلاعات به همراه پویانمایی محو شدن اطلاعات آن</h2>
<table>
    <tr>
        <th>
            عملیات
        </th>
        <th>
            عنوان
        </th>
    </tr>
    @foreach (var item in Model)
    {
        <tr>
            <td>
                <span id="row-@item.Id">حذف</span>
            </td>
            <td>
                @item.Title
            </td>
        </tr>
    }
</table>
@section JavaScript
{
    <script type="text/javascript">
        $(function () {
            $('span[id^="row"]').click(function () {
                var span = $(this);
                var postId = span.attr('id').replace('row-', '');
                var tableRow = span.parent().parent();
                $.ajax({
                    type: "POST",
                    url: '@postUrl',
                    data: JSON.stringify({ postId: postId }),
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    complete: function (xhr, status) {
                        var data = xhr.responseText;
                        if (xhr.status == 403) {
                            window.location = "/login";
                        }
                        else if (status === 'error' || !data || data == "nok") {
                            alert('خطایی رخ داده است');
                        }
                        else {
                            $(tableRow).fadeTo(600, 0, function () {
                                $(tableRow).remove();
                            });
                        }
                    }
                });
            });
        });
    </script>
}

 $('span[id^="row"]').click(function () {

 var span = $(this);
var postId = span.attr('id').replace('row-', '');
var tableRow = span.parent().parent();

    public static class TestDependencyScope
    {
        private static IContainer _currentNestedContainer;

        public static void Begin()
        {
            if (_currentNestedContainer != null)
                throw new Exception("Cannot begin test dependency scope. Another dependency scope is still in effect.");

            _currentNestedContainer = IoC.Container.GetNestedContainer();
        }

        public static IContainer CurrentNestedContainer
        {
            get
            {
                if (_currentNestedContainer == null)
                    throw new Exception($"Cannot access the {nameof(CurrentNestedContainer)}. There is no dependency scope in effect.");

                return _currentNestedContainer;
            }
        }

        public static void End()
        {
            if (_currentNestedContainer == null)
                throw new Exception("Cannot end test dependency scope. There is no dependency scope in effect.");

            _currentNestedContainer.Dispose();
            _currentNestedContainer = null;
        }
    }

    [PopulateHttpContext]
    [ContainerPerTestCase]
    [Transactional]
    [TestFixture]
    public class IntegratedTestBase
    {
        [SetUp]
        public void EachTestSetUp()
        {
            BeforeEachTest();
        }
        [TearDown]
        public void EachTestTearDown()
        {
            AfterEachTest();
        }
        protected virtual void BeforeEachTest()
        {
        }
        protected virtual void AfterEachTest()
        {
        }

        protected void UsingUnitOfWork(Action<IUnitOfWork> action)
        {
            IoC.Container.Using((IUnitOfWork uow)=>
            {
                uow.DisableAllFilters();
                action(uow);
            });
        }

        protected T UsingUnitOfWork<T>(Func<IUnitOfWork, T> func)
        {
            var uow = IoC.Resolve<IUnitOfWork>();

            uow.DisableAllFilters();

            using (uow)
            {
                var result = func(uow);

                uow.SaveChanges();

                return result;
            }
        }
        protected async Task<T> UsingUnitOfWorkAsync<T>(Func<IUnitOfWork, Task<T>> func)
        {
            var uow = IoC.Resolve<IUnitOfWork>();

            uow.DisableAllFilters();

            using (uow)
            {
                var result = await func(uow).ConfigureAwait(false);

                await uow.SaveChangesAsync().ConfigureAwait(false);

                return result;
            }

        }
    }

namespace ProjectName.ServiceLayer.IntegrationTests
{
    public static class Testing
    {
        private static IContainer Container => TestDependencyScope.CurrentNestedContainer;

        public static T Resolve<T>()
        {
            return Container.GetInstance<T>();
        }

        public static object Resolve(Type type)
        {
            return Container.GetInstance(type);
        }

        public static void Inject<T>(T instance) where T : class
        {
            Container.Inject(instance);
        }
    }
}

//in test classes
using static ProjectName.ServiceLayer.IntegrationTests.Testing;
namespace ProjectName.ServiceLayer.IntegrationTests
{
    public class RoleServiceTests : IntegratedTestBase
    {
        private IRoleService _service;
        protected override void BeforeEachTest()
        {
            _service = Resolve<IRoleService>();
        }
     }
}

    public static void Main()
    {
        Action Hello = () =>  Console.WriteLine("Hello:");

        Hello += () => Console.WriteLine("  World");
        Hello += () => Console.WriteLine("  .NET");
        Hello += () => Console.WriteLine("  Khalid");

        Hello();
    }

        private static void LoadWithoutTracking()
        {
            using (var ctx = new MyContext())
            {
                ctx.Configuration.AutoDetectChangesEnabled = false;
                var list = ctx.Users.ToList();
                if (list.Any())
                {
                    // keep the list in memory
                }
            }
        }