Mihail Yankov M-Yankov

## GetServiceFromScope.cs
// ASP Net Core 2.2.2
// Get registered services from WebHost instance.
// In case the IServiceCollection or ApplicationBuilder is not available in the current context.
// The method can be used in separate assembly

pulbic void TestMethod()
{
    using (IServiceScope scope = this.webHost.Services.GetRequiredService<IServiceScopeFactory>().CreateScope())
    {
        RoleManager<IdentityRole> roleManager = scope.ServiceProvider.GetRequiredService<RoleManager<IdentityRole>>();

## UseTwoAsyncMethods.cs
public class Program
{
    public static async Task Main(string[] args)
    {
        Stopwatch timer = Stopwatch.StartNew();

        Task a = OperationSlow();
        Task b = OperationFast();

        await Task.Delay(5000);

## DownloadHtmlAsImage.js
/* Test on Firefox 64.0
 * See https://html2canvas.hertzen.com/
 * https://github.com/niklasvh/html2canvas/
 *
 * Usage:
 * Open a page
 * Open developer console (F12)
 * Paste the script below
 * Click save image.
 *

## todoist_task_export.js
var listItems = [];
document.querySelectorAll('.task_item')
.forEach(e => listItems.push(e.textContent) )

listItems.join('\n');


// Regex separate year labels (\w+)([0-9]{4})

## colorful-scrollbar.as.css
scrollbar, scrollbar *:not(scrollbarbutton), scrollcorner {
	-moz-appearance: none !important;
	--scrollbar-width: 15px;
    --scrollbar-height: var(--scrollbar-width);
}

scrollbar, scrollcorner  {
    background: #fff !important;
}
scrollbar[orient="vertical"] {

## select2cacheResults.js
var s2data = $allUnitsSelect.select2({
            ajax: {
               url: '/GetValues',
                dataType: 'json',
                data: function (params) {
                    var query = {
                     text: text,
                 }

                  return query;

## DoNotBlockUIThread.cs
/* How to not block UI thread: */
public static void Main()
{
  /* Your code here */

   Task exitTask = ExitCommandAsync();
   Task.WaitAll(exitTask);

   /* Console remains active */
}

## EntityFramworkExceptions.cs
(ex as System.Data.Entity.Validation.DbEntityValidationException).EntityValidationErrors.ToList()[0].ValidationErrors.ToList()[0]

## LoaderBootstrap.html
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
<style>

## DynamicModel.cs
dynamic person = new object { Name = "John", Age = 32, Title = "HR" };

// In case the person comes from somewhere else
if (person != null)
{
    var properties = person.GetType().GetPtoperties(); // Will return an Array of System.Reflection.PropertyInfo[];

    // or
    Type theType = (Type)person.GetType();
	// ASP Net Core 2.2.2
	// Get registered services from WebHost instance.
	// In case the IServiceCollection or ApplicationBuilder is not available in the current context.
	// The method can be used in separate assembly

	pulbic void TestMethod()
	{
	using (IServiceScope scope = this.webHost.Services.GetRequiredService<IServiceScopeFactory>().CreateScope())
	{
	RoleManager<IdentityRole> roleManager = scope.ServiceProvider.GetRequiredService<RoleManager<IdentityRole>>();
	public class Program
	{
	public static async Task Main(string[] args)
	{
	Stopwatch timer = Stopwatch.StartNew();

	Task a = OperationSlow();
	Task b = OperationFast();

	await Task.Delay(5000);
	/* Test on Firefox 64.0
	* See https://html2canvas.hertzen.com/
	* https://github.com/niklasvh/html2canvas/
	*
	* Usage:
	* Open a page
	* Open developer console (F12)
	* Paste the script below
	* Click save image.
	*
	var listItems = [];
	document.querySelectorAll('.task_item')
	.forEach(e => listItems.push(e.textContent) )

	listItems.join('\n');


	// Regex separate year labels (\w+)([0-9]{4})
	scrollbar, scrollbar *:not(scrollbarbutton), scrollcorner {
	-moz-appearance: none !important;
	--scrollbar-width: 15px;
	--scrollbar-height: var(--scrollbar-width);
	}

	scrollbar, scrollcorner {
	background: #fff !important;
	}
	scrollbar[orient="vertical"] {
	var s2data = $allUnitsSelect.select2({
	ajax: {
	url: '/GetValues',
	dataType: 'json',
	data: function (params) {
	var query = {
	text: text,
	}

	return query;
	/* How to not block UI thread: */
	public static void Main()
	{
	/* Your code here */

	Task exitTask = ExitCommandAsync();
	Task.WaitAll(exitTask);

	/* Console remains active */
	}
	<!DOCTYPE html>
	<html lang="en">

	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Document</title>
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
	<style>
	dynamic person = new object { Name = "John", Age = 32, Title = "HR" };

	// In case the person comes from somewhere else
	if (person != null)
	{
	var properties = person.GetType().GetPtoperties(); // Will return an Array of System.Reflection.PropertyInfo[];

	// or
	Type theType = (Type)person.GetType();