<input type="file" ngf-select ng-model="picFile" name="file" accept="image/*" ngf-max-size="2MB" required>

<div ngf-drop ng-model="picFile" ngf-pattern="image/*">
     ...
</div>

<i ng-show="myForm.file.$error.required">*required</i><br>
<i ng-show="myForm.file.$error.maxSize">
File too large: max is 2M
</i>

app.controller('MyCtrl', ['$scope', 'Upload', '$timeout', function ($scope, Upload, $timeout) {
    // the method uploadPic called from Angular View
$scope.uploadPic = function(file) {
    file.upload = Upload.upload({
      url: 'https://angular-file-upload-cors-srv.appspot.com/upload',
      data: {file: file, otherData: $scope.otherData},
    });

    file.upload.then(function (response) {
// waiting for response
        $timeout(function () {
file.result = response.data;
        });
    }, function (response) {
//error
        if (response.status > 0)
$scope.errorMsg = response.status + ': ' + response.data;
    }, function (evt) {
//progress
        file.progress = Math.min(100, parseInt(100.0 * evt.loaded / evt.total));
console.log(file.progress);
    });
    }
}]);

using System.ComponentModel;

namespace Refactoring.Day6.ExtractSuperclass.Before
{
    public class User : INotifyPropertyChanged
    {
        string _name;
        public string Name
        {
            get { return _name; }
            set
            {
                if (_name == value) return;
                _name = value;
                raisePropertyChanged("Name");
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        void raisePropertyChanged(string propertyName)
        {
            var handler = PropertyChanged;
            if (handler == null) return;
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

using System.ComponentModel;

namespace Refactoring.Day6.ExtractSuperclass.After
{
    public class ViewModelBase : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        protected void RaisePropertyChanged(string propertyName)
        {
            var handler = PropertyChanged;
            if (handler == null) return;
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

namespace Refactoring.Day6.ExtractSuperclass.After
{
    public class User : ViewModelBase
    {
        string _name;
        public string Name
        {
            get { return _name; }
            set
            {
                if (_name == value) return;
                _name = value;
                RaisePropertyChanged("Name");
            }
        }
    }
}

public class Navbar
    {
        public int Id { get; set; }
        public string Title { get; set; }

        public int? ParentId { get; set; }
        public virtual Navbar Parent { get; set; }
        public bool IsActive { get; set; }
        public bool HasChiled { get; set; }
        public bool IsMegaMenu { get; set; }
        public PageGroup PageGroup { get; set; }
        public string Url { get; set; }
        public bool OpenNewPage { get; set; }

        public virtual ICollection<Navbar> Children { get; set; }
    }

    public class TopNavbar : ViewComponent
    {
        private readonly DbSet<Navbar> _navbars;
        private readonly AppDbContext _dbContext;

        public TopNavbar(AppDbContext dbContext)
        {
            _dbContext = dbContext;
            _navbars = _dbContext.Set<Navbar>();
        }
        public async Task<IViewComponentResult> InvokeAsync()
        {
            var navbars = await _navbars.Include(p=>p.Parent).Include(x=>x.Children).OrderBy(x=>x.ParentId).ToListAsync();
            return View(viewName: "~/Views/Shared/Components/NavbarViewComponent/_Menu.cshtml", navbars);
        }
    }

 <ul class="menu">
                <li>
                    <a href="Index_demo6.html"><i class="menu_icon_wrapper fal fa-home-lg-alt"></i>صفحه اصلی</a>
                </li>
                @await Component.InvokeAsync("TopNavbar");                
 </ul>

@using TR.Context.Entities
@using Microsoft.AspNetCore.Html
@model IEnumerable<TR.Context.Entities.Navbar>


@foreach (var menu in Model.Where(x => x.Parent == null))
{

    <li class="@(menu.HasChiled ? "has_sub narrow" : "")">
        <a href="#">@menu.Title</a>
        @if (menu.HasChiled)
        {
            <div class="second">
                <div class="inner">
                    <ul>
                        @foreach (var menuChild in menu.Children)
                        {
                        <partial name="~/Views/Shared/Components/NavbarViewComponent/_SubMenu.cshtml" model="menuChild" />
                        }
                    </ul>
                </div>
            </div>
        }
    </li>
}

@model TR_.Context.Entities.Navbar

<li class="@(Model.HasChiled ? "sub":"")">
    <a href="#">
        @if (Model.Children.Any())
        {<i class="q_menu_arrow fal fa-angle-left"></i>}
        @Model.Title
    </a>
    @if (Model.Children.Any())
    {
        <ul>
            @foreach (var menuChild in Model.Children)
            {
                <partial name="~/Views/Shared/Components/NavbarViewComponent/_SubMenu.cshtml" model="menuChild" />
            }
        </ul>
    }
</li>

• DataContext: این شیء اتصالش را به منبع داده‌ها برقرار کرده و هر موقع داده‌ای را نیاز داریم، از طریق این شیء تامین می‌شود.
• DataBinding: یک واسطه بین DataContext و هر آن چیزی است که قرار است از داده‌ها تغذیه کند. در تعریفی رسمی‌تر می‌گوییم: روشی ساده و قدرتمند بوده و واسطی است بین مدل تجاری و رابط کاربری. هر زمانی که داده‌ای تغییر کند، ما را آگاه می‌سازد که می‌تواند یک ارتباط یک طرفه یا دو طرفه باشد.
  
• DataTemplate: نحوه‌ی فرمت بندی و نمایش داده‌ها را تعیین می‌کند.

   public enum FieldOfWork
    {
        Actor=0,
        Director=1,
        Producer=2
    }
    public class Person
    {
        public string Name { get; set; }

        public bool Gender { get; set; }

        public string ImageName { get; set; }

        public string Country { get; set; }

        public DateTime Date { get; set; }

        public IList<FieldOfWork> FieldOfWork { get; set; }
        public static Person GetPerson()
        {
            return new Person()
            {
                Name = "Leo",
                Gender = true,
                ImageName ="man.jpg",
                Country = "Italy",
                Date = DateTime.Now
            };
        }
    }

 DataContext = Person.GetPerson();

public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            DataContext = Person.GetPerson();
        }  
    }

Text="{Binding Name}"

Source="{Binding ImageName}"

A potentially dangerous Request.Form value was detected from the client (Html="<a>"). 

[HttpPost]
[ValidateInput(false)]
public ActionResult CreateBlogPost(BlogPost post)

using System;
using System.Web.Mvc;

namespace MvcApplication14.Models
{
    public class BlogPost
    {
        public int Id { set; get; }
        public DateTime AddDate { set; get; }
        public string Title { set; get; }

        [AllowHtml]
        public string Text { set; get; }
    }
}

[RequireHttps]
public ActionResult LogOn() 
{ 
} 

@using (Html.BeginForm()) {
    @Html.AntiForgeryToken()

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult CreateBlogPost(BlogPost post)

<input name="__RequestVerificationToken" type="hidden" value="C0iPfy/3T....=" />

[ValidateAntiForgeryToken(Salt="1234")]

@Html.AntiForgeryToken(salt:"1234")

using System.Web.Mvc;

namespace MvcApplication14.CustomFilter
{
    public class CheckReferrerAttribute : AuthorizeAttribute
    {
        public override void OnAuthorization(AuthorizationContext filterContext)
        {
            if (filterContext.HttpContext != null)
            {
                if (filterContext.HttpContext.Request.UrlReferrer == null)
                    throw new System.Web.HttpException("Invalid submission");

                if (filterContext.HttpContext.Request.UrlReferrer.Host != "mysite.com")
                    throw new System.Web.HttpException("This form wasn't submitted from this site!");
            }

            base.OnAuthorization(filterContext);
        }
    }
}

[HttpPost]
[CheckReferrer]
[ValidateAntiForgeryToken]
public ActionResult DeleteTask(int id)

<system.web>
    <httpHandlers>
      <add path="*" verb="*" type="System.Web.HttpNotFoundHandler"/>
    </httpHandlers>
</system.web>

<system.webServer>
    <handlers>
      <remove name="BlockViewHandler"/>
      <add name="BlockViewHandler" path="*" verb="*" preCondition="integratedMode" type="System.Web.HttpNotFoundHandler" />
    </handlers>
  </system.webServer>

public ActionResult Download()
{
      return File(Server.MapPath("~/Myfiles/test.txt"), "text/plain");
}

public string Sum(int a,int b)
{
    return (a + b).ToString();
}

@using MvcTest.Controllers;
@{
    ViewBag.Title = "Home Page";
}
   
<h1>
    @ViewBag.SumFunc(7,8)
</h1>
<h1>
    @ViewBag.SumFunc2(9, 10)
</h1>
<h1>
    @ViewBag.SumFunc3(5, 1)
</h1>
<h1>
    @ViewBag.SumFunc4(2, 3)
</h1>

FirstName

firstName

strFirstName
lblFirstName

<Company>.<Technology|Produt|Project>[.<Feature>][.<SubNamespace>]

Microsoft.Reporting.WebForms
Kara.Support.Manager.Enums
Kara.CSS.HQ.WebUI.Configuration

PackageManager , PacakgeConfigGenerator
Circle , Utility , Package

CreateConfig , classdata
CManager , ClsPackage , Config_Creator , Config1389

CenterCollection , PackageCollection

public delegate void Logger (string log);
public delegate void LoggingCallback (object sender, string reason);

AddEventArgs , EditEventArgs , DeleteEventArgs

Adding , Add , Added

public delegate void <EventName>EventHandler  (object sender, <EventName>EventArgs e);

public event EventHandler <AddEventArgs> Adding;

DisplayNameAttribute , MessageTypeAttribute

IComponent  (اسم)
IConnectionProvider (موصوف)
ICloneable (صفت)

public enum FileMode {
    Append,
    Read, …
}

[Flag]
public enum KeyModifiers {
    Alt = 1, 
    Control = 2,
    Shift = 4
}

public enum OperationState {
    DoneState, 
    FaultState,
    RollbackState
}

AddDays , Save , DeleteRow , BindData , Close , Open

Radius , ReportType , DataSource , Mode , CurrentCenterId

public CenterCollection Centers { get; set; }

if (list.Contains(item))
if (regularExpression.Matches(text))
if (stream.CanSeek)
if (context.Created)
if (form.Enabled)

if (list.IsContains(item))
if (regularExpression.Match(text))
if (stream.Seekable)
if (context.IsCreated)
if (form.IsEnabled)

public Color Color { get; set; }

firstName , e , id , packageId , centerName , name

public static MyType operator +(MyType left, MyType right)
public static bool operator ==(MyType left, MyType right)

public static MyType operator ++(MyType value)

public static MyType operator /(MyType dividend, MyType divisor)

public static MyType operator -(MyType d1, MyType d2) // incorrect!

Area , DataBinder , PublicCacheName

_centersList
_firstName
_currentCenter

parameterType , packageOperationTypeId

lblName (Label)
txtHeader (TextBox)
btnSave (Button)

ArgumentNullException , InvalidOperaionException

System.Data

<Company>.<Component>.dll
<Company>.<Project|Product|Technology>.<Component>.dll

Microsoft.CSharp.dll , Kara.CSS.Manager.dll

public int IComparer<T> {…}
public delegate bool Predicate<T> (T item)

public int ISessionChannel<TSession> {…}
public delegate TOutput Converter<TInput, TOutput> (TInput from)
public class Nullable<T> {…}
public class List<T> {…}

ArgumentExceptionIllegalCharacters
ArgumentExceptionInvalidName
ArgumentExceptionFileNotFound

public class Color {
    …
    public static Color FromArgb(…)
    { … }
}

public class MyHttpHandler : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {        
    }

    public bool IsReusable
    {
        get { return false; }
    }
}

public class MyHttpHandler : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {
        HttpResponse response = context.Response;
        HttpRequest request = context.Request;

        response.Write("Every Page has a some text like this");
    }

    public bool IsReusable
    {
        get { return false; }
    }
}

<configuration>
  <system.web>
    <httpHandlers>

  <add name="myhttphandler" verb="*" path="*.aspx" type="MyHttpHandler"/>

    </httpHandlers>
  </system.web>
</configuration>

 public IAsyncResult BeginProcessRequest(HttpContext context, AsyncCallback callback, object obj)
    {
        
    }

    public void EndProcessRequest(IAsyncResult result)
    {
        
    }

   public AsynchOperation(AsyncCallback callback, HttpContext context, Object state)
    {
        _callback = callback;
        _context = context;
        _state = state;
        _completed = false;
    }

   public void StartAsyncWork()
    {
        ThreadPool.QueueUserWorkItem(new WaitCallback(StartAsyncTask),null);
    }

 private void StartAsyncTask(Object workItemState)
    {

        _context.Response.Write("<p>Completion IsThreadPoolThread is " + Thread.CurrentThread.IsThreadPoolThread + "</p>\r\n");

        _context.Response.Write("Hello World from Async Handler!");
        _completed = true;
        _callback(this);
    }

context.Response.Write("<p>Begin IsThreadPoolThread is " + Thread.CurrentThread.IsThreadPoolThread + "</p>\r\n");
        AsynchOperation asynch = new AsynchOperation(callback, context, obj);
        asynch.StartAsyncWork();
        return asynch;