using System;
using System.Net;

namespace Async15
{
    class Program
    {
        static void Main(string[] args)
        {
            using (var webClient = new WebClient { })
            {
                webClient.Headers.Add("User-Agent", "AsyncContext 1.0");
                var data = await webClient.DownloadStringTaskAsync("https://www.dntips.ir");
                Console.WriteLine(data);
            }
        }
    }
}

 PM> Install-Package Nito.AsyncEx

using System;
using System.Net;
using Nito.AsyncEx;

namespace Async15
{
    class Program
    {
        static void Main(string[] args)
        {
            AsyncContext.Run(async () =>
            {
                using (var webClient = new WebClient())
                {
                    webClient.Headers.Add("User-Agent", "AsyncContext 1.0");
                    var data = await webClient.DownloadStringTaskAsync("https://www.dntips.ir");
                    Console.WriteLine(data);
                }
            });
        }
    }
}

Action, () => { }
Func<Task>, async () => { await Task.Yield(); }

Func<TResult>, () => { return 13; }
Func<Task<TResult>>, async () => { await Task.Yield(); return 13; }

class Program
{
  static async Task<int> AsyncMain()
  {
    ..
  }

  static int Main(string[] args)
  {
    return AsyncContext.Run(AsyncMain);
  }
}

using System;
Console.WriteLine("Hello, World!");
Console.ReadLine();

dotnet publish -p:PublishSingleFile=true -r win-x64 -c Release --self-contained true

dotnet publish -p:PublishSingleFile=true -r win-x64 -c Release --self-contained false

<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net6.0</TargetFramework>
    <PublishSingleFile>true</PublishSingleFile>
    <SelfContained>true</SelfContained>
    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
    <PublishReadyToRun>true</PublishReadyToRun>
  </PropertyGroup>
</Project>

dotnet publish -p:PublishSingleFile=true -r win-x64 -c Release --self-contained true -p:PublishTrimmed=true

dotnet publish -p:PublishSingleFile=true -r win-x64 -c Release --self-contained true -p:EnableCompressionInSingleFile=true

PM> Install-Package NBench
PM> Install-Package NBench.Runner

[PerfBenchmark(RunMode = RunMode.Iterations, TestMode = TestMode.Measurement)]
[MemoryMeasurement(MemoryMetric.TotalBytesAllocated)]
public void AddMemoryMeasurement()
{
    const int numberOfAdds = 1000000;
    var dictionary = new Dictionary<int, int>();
    for (var i = 0; i < numberOfAdds; i++)
    {
        dictionary.Add(i, i);
    }
}
 
[PerfBenchmark(RunMode = RunMode.Iterations, TestMode = TestMode.Measurement)]
[GcMeasurement(GcMetric.TotalCollections, GcGeneration.AllGc)]
public void MeasureGarbageCollections()
{
    var dataCache = new List<int[]>();
    for (var i = 0; i < 500; i++)
    {
        for (var j = 0; j < 10000; j++)
        {
            var data = new int[100];
            dataCache.Add(data.ToArray());
        }
 
        dataCache.Clear();
    }
}

 D:\Prog\NBenchSample\packages\NBench.Runner.0.3.4\lib\net45\NBench.Runner.exe "D:\Prog\NBenchSample\NBenchSample\bin\Release\NBenchSample.exe"

 --------------- RESULTS: NBenchSample.Program+AddMemoryMeasurement ---------------
TotalBytesAllocated: Max: 47,842,944.00 bytes, Average: 42,002,757.60 bytes, Min: 41,353,848.00 bytes, StdDev: 2,052,032.33 bytes
TotalBytesAllocated: Max / s: 359,074,078.19 bytes, Average / s: 311,474,786.96 bytes, Min / s: 300,926,928.79 bytes, StdDev / s: 16,869,581.62 bytes

--------------- RESULTS: NBenchSample.Program+MeasureGarbageCollections ---------------
TotalCollections [Gen0]: Max: 708.00 collections, Average: 702.80 collections, Min: 697.00 collections, StdDev: 3.65 collections
TotalCollections [Gen0]: Max / s: 111.55 collections, Average / s: 109.87 collections, Min / s: 107.88 collections, StdDev / s: 1.28 collections

TotalCollections [Gen1]: Max: 338.00 collections, Average: 334.60 collections, Min: 330.00 collections, StdDev: 2.41 collections
TotalCollections [Gen1]: Max / s: 53.61 collections, Average / s: 52.31 collections, Min / s: 51.10 collections, StdDev / s: 0.70 collections

TotalCollections [Gen2]: Max: 32.00 collections, Average: 24.80 collections, Min: 18.00 collections, StdDev: 4.73 collections
TotalCollections [Gen2]: Max / s: 4.91 collections, Average / s: 3.87 collections, Min / s: 2.86 collections, StdDev / s: 0.72 collections

[PerfBenchmark(RunMode = RunMode.Iterations, TestMode = TestMode.Measurement)]
[MemoryMeasurement(MemoryMetric.TotalBytesAllocated)]
public void AddMemoryMeasurement_With_initial_Size()
{
    const int numberOfAdds = 1000000;
    var dictionary = new Dictionary<int, int>(numberOfAdds);
    for (var i = 0; i < numberOfAdds; i++)
    {
        dictionary.Add(i, i);
    }
}

 --------------- RESULTS: NBenchSample.Program+AddMemoryMeasurement_With_initial_Size ---------------
TotalBytesAllocated: Max: 23,245,912.00 bytes, Average: 23,245,912.00 bytes, Min: 23,245,912.00 bytes, StdDev: 0.00 bytes
TotalBytesAllocated: Max / s: 394,032,435.34 bytes, Average / s: 389,108,363.43 bytes, Min / s: 378,502,981.34 bytes, StdDev / s: 5,575,519.09 bytes

public class DictionaryThroughputTests
{
    private readonly Dictionary<int, int> _dictionary = new Dictionary<int, int>();
 
    private const string AddCounterName = "AddCounter";
    private Counter _addCounter;
    private int _key;
 
    private const int AverageOperationsPerSecond = 20000000;
 
    [PerfSetup]
    public void Setup(BenchmarkContext context)
    {
        _addCounter = context.GetCounter(AddCounterName);
        _key = 0;
    }
 
    [PerfBenchmark(RunMode = RunMode.Throughput, TestMode = TestMode.Test)]
    [CounterThroughputAssertion(AddCounterName, MustBe.GreaterThan, AverageOperationsPerSecond)]
    public void AddThroughput_ThroughputMode(BenchmarkContext context)
    {
        _dictionary.Add(_key++, _key);
        _addCounter.Increment();
    }
 
    [PerfBenchmark(RunMode = RunMode.Iterations, TestMode = TestMode.Test)]
    [CounterThroughputAssertion(AddCounterName, MustBe.GreaterThan, AverageOperationsPerSecond)]
    public void AddThroughput_IterationsMode(BenchmarkContext context)
    {
        for (var i = 0; i < AverageOperationsPerSecond; i++)
        {
            _dictionary.Add(i, i);
            _addCounter.Increment();
        }
    }
 
    [PerfCleanup]
    public void Cleanup(BenchmarkContext context)
    {
        _dictionary.Clear();
    }
}

 --------------- RESULTS: NBenchSample.DictionaryThroughputTests+AddThroughput_ThroughputMode ---------------
[Counter] AddCounter: Max: 575,654.00 operations, Average: 575,654.00 operations, Min: 575,654.00 operations, StdDev: 0.00 operations
[Counter] AddCounter: Max / s: 7,205,997.59 operations, Average / s: 7,163,894.30 operations, Min / s: 7,075,316.79 operations, StdDev / s: 42,518.20 operations

--------------- RESULTS: NBenchSample.DictionaryThroughputTests+AddThroughput_IterationsMode ---------------
[Counter] AddCounter: Max: 20,000,000.00 operations, Average: 20,000,000.00 operations, Min: 20,000,000.00 operations, StdDev: 0.00 operations
[Counter] AddCounter: Max / s: 7,409,380.61 operations, Average / s: 7,250,991.24 operations, Min / s: 6,880,938.73 operations, StdDev / s: 148,085.19 operations

<ItemGroup>
   <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="2.0.0" />
</ItemGroup>

warning : Using DotNetCliToolReference to reference 'Microsoft.EntityFrameworkCore.Tools.DotNet' is obsolete and can be removed from this project. This tool is bundled by default in the .NET Core SDK.
warning : Using DotNetCliToolReference to reference 'Microsoft.DotNet.Watcher.Tools' is obsolete and can be removed from this project. This tool is bundled by default in the .NET Core SDK.

 dotnet tool install -g example

 %USERPROFILE%\.dotnet\toolspkgs (Windows)
 $HOME/.dotnet/toolspkgs (macOS/Linux)

 %USERPROFILE%\.dotnet\tools

 ~/.dotnet/tools

Windows PowerShell:
setx PATH "$env:PATH;$env:USERPROFILE/.dotnet/tools"
Linux/macOS:
echo "export PATH=\"\$PATH:\$HOME/.dotnet/tools\"" >> ~/.bash_profile

<Project Sdk="Microsoft.NET.Sdk">  
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <IsPackable>true</IsPackable>
     <PackAsTool>true</PackAsTool>
     <TargetFramework>netcoreapp2.1</TargetFramework>
   </PropertyGroup>  
</Project>

 dotnet pack -c Release

 dotnet tool install -g package-name

> ng new ASPNETCore2JwtAuthentication.AngularClient --routing

> npm install bootstrap --save

  "apps": [
    {
      "styles": [
    "../node_modules/bootstrap/dist/css/bootstrap.min.css",
        "styles.css"
      ],

>ng g c welcome
>ng g c PageNotFound

@NgModule({
  declarations: [
    AppComponent,
    WelcomeComponent,
    PageNotFoundComponent
  ],

import { PageNotFoundComponent } from './page-not-found/page-not-found.component';
import { WelcomeComponent } from './welcome/welcome.component';
import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
const routes: Routes = [
  { path: 'welcome', component: WelcomeComponent },
  { path: '', redirectTo: 'welcome', pathMatch: 'full' },
  { path: '**', component: PageNotFoundComponent }
];
@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

>ng g m Authentication -m app.module --routing

  create src/app/authentication/authentication-routing.module.ts (257 bytes)
  create src/app/authentication/authentication.module.ts (311 bytes)
  update src/app/app.module.ts (696 bytes)

import { EmployeeRoutingModule } from './employee/employee-routing.module';
@NgModule({
  imports: [
    BrowserModule,
    AppRoutingModule,
    AuthenticationModule
  ]

import { EmployeeModule } from './employee/employee.module';
@NgModule({
  imports: [
    BrowserModule,
    AuthenticationModule,
    AppRoutingModule 
  ]

>ng g c Authentication/Login

  create src/app/Authentication/login/login.component.html (24 bytes)
  create src/app/Authentication/login/login.component.ts (265 bytes)
  create src/app/Authentication/login/login.component.css (0 bytes)
  update src/app/Authentication/authentication.module.ts (383 bytes)

import { LoginComponent } from "./login/login.component";

@NgModule({
  declarations: [LoginComponent]
})

import { LoginComponent } from "./login/login.component";

const routes: Routes = [
  { path: "login", component: LoginComponent }
];

import { NgModule, SkipSelf, Optional, } from "@angular/core";
import { CommonModule } from "@angular/common";
import { RouterModule } from "@angular/router";

// import RxJs needed operators only once
import "./services/rxjs-operators";

import { BrowserStorageService } from "./browser-storage.service";

@NgModule({
  imports: [CommonModule, RouterModule],
  exports: [
    // components that are used in app.component.ts will be listed here.
  ],
  declarations: [
    // components that are used in app.component.ts will be listed here.
  ],
  providers: [
    // global singleton services of the whole app will be listed here.
    BrowserStorageService
  ]
})
export class CoreModule {
  constructor( @Optional() @SkipSelf() core: CoreModule) {
    if (core) {
      throw new Error("CoreModule should be imported ONLY in AppModule.");
    }
  }
}

import { NgModule, ModuleWithProviders } from "@angular/core";
import { CommonModule } from "@angular/common";

@NgModule({
  imports: [
    CommonModule
  ],
  entryComponents: [
    // All components about to be loaded "dynamically" need to be declared in the entryComponents section.
  ],
  declarations: [
    // common and shared components/directives/pipes between more than one module and components will be listed here.
  ],
  exports: [
    // common and shared components/directives/pipes between more than one module and components will be listed here.
    CommonModule
  ]
  /* No providers here! Since they’ll be already provided in AppModule. */
})
export class SharedModule {
  static forRoot(): ModuleWithProviders {
    // Forcing the whole app to use the returned providers from the AppModule only.
    return {
      ngModule: SharedModule,
      providers: [ /* All of your services here. It will hold the services needed by `itself`. */]
    };
  }
}

import { FormsModule } from "@angular/forms";
import { HttpClientModule } from "@angular/common/http";

import { CoreModule } from "./core/core.module";
import { SharedModule } from "./shared/shared.module";

@NgModule({
  imports: [
    BrowserModule,
    FormsModule,
    HttpClientModule,
    CoreModule,
    SharedModule.forRoot(),
    AuthenticationModule,
    AppRoutingModule
  ]
})
export class AppModule { }

> ng g c Header

  create src/app/header/header.component.html (25 bytes)
  create src/app/header/header.component.ts (269 bytes)
  create src/app/header/header.component.css (0 bytes)
  update src/app/app.module.ts (1069 bytes)

<nav>
  <div>
    <div>
      <a [routerLink]="['/']">{{title}}</a>
    </div>
    <ul>
      <li role="menuitem" routerLinkActive="active" [routerLinkActiveOptions]="{ exact: true }">
        <a [routerLink]="['/welcome']">Home</a>
      </li>
      <li role="menuitem" routerLinkActive="active">
        <a queryParamsHandling="merge" [routerLink]="['/login']">Login</a>
      </li>
    </ul>
  </div>
</nav>

export class HeaderComponent implements OnInit {
    title = "Angular.Jwt.Core";

<app-header></app-header>
<div>
  <router-outlet></router-outlet>
</div>

import { HeaderComponent } from "./component/header/header.component";

@NgModule({
  exports: [
    // components that are used in app.component.ts will be listed here.
    HeaderComponent
  ],
  declarations: [
    // components that are used in app.component.ts will be listed here.
    HeaderComponent
  ]
})
export class CoreModule {