mvacha

public static Task<SqlDataReader> ExecuteReaderAsync(this SqlCommand command)
{
    return Task.Factory.FromAsync(command.BeginExecuteReader, command.EndExecuteReader, null);
}

public static Task<object> ExecuteScalarAsync(this SqlCommand command)
{
    return command.ExecuteReaderAsync().ContinueWith((executeTask) =>
    {
        TaskCompletionSource<object> source = new TaskCompletionSource<object>();

mvacha

How to turn on NumLock in Windows 10(on Intel NUC), definitive guide:
1) Power options > Choose what the power buttons do > Uncheck "Turn on fast startup"
2) Registry key: HKEY_USERS/.Default/Control Panel/Keyboard/InitialKeyboardIndicators = 2147483650
3) Registry key: HKEY_CURRENT_USER/Control Panel/Keyboard/InitialKeyboardIndicators = 2
4) Intel UEFI BIOS: BootupNumLock State = On, FastBoot = On

mvacha

<ScrollViewer HorizontalScrollMode="Enabled"
                      VerticalScrollMode="Enabled"
                      HorizontalScrollBarVisibility="Disabled"
                      VerticalScrollBarVisibility="Auto"
                      IsHorizontalRailEnabled="True"
                      IsVerticalRailEnabled="True"
                      HorizontalAlignment="Stretch"
                      VerticalAlignment="Stretch">
            <Grid>
                <ScrollViewer HorizontalScrollMode="Enabled"

mvacha

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    base.OnNavigatedTo(e);

    InputPane.GetForCurrentView().Showing += OnKeyboardShowing;
    InputPane.GetForCurrentView().Hiding += OnKeyboardHiding;
}

protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)
{

mvacha

public static async Task ChangeViewAsync(this ScrollViewer scrollViewer, double? horizontalOffset, double? verticalOffset, bool disableAnimation)
{
    var tcs = new TaskCompletionSource<object>();

    EventHandler<ScrollViewerViewChangedEventArgs> viewChanged = (s, e) => tcs.TrySetResult(null);
    try
    {
        scrollViewer.ViewChanged += viewChanged;
        scrollViewer.ChangeView(horizontalOffset, verticalOffset, null, disableAnimation);
        await tcs.Task;

mvacha

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;

namespace WpfTest

mvacha

static State Request(this State state, Transition transition) =>
(state, transition) match
(
    case (State.Running, Transition.Suspend): State.Suspended
    case (State.Suspended, Transition.Resume): State.Running
    case (State.Suspended, Transition.Terminate): State.NotRunning
    case (State.NotRunning, Transition.Activate): State.Running
    case *: throw new InvalidOperationException()
);

mvacha

            Task.Factory.StartNew(async () =>
            {
                try
                {
                    var res = await connectedTCS.Task;                        
                    if (res.IsFailure)
                    {
                        DeviceEvent.AuthenticationFailure(this);
                        connectedEvent.Set();
                        return;

mvacha

public bool Start()
{
  Gateway = new GatewayConnection(IPAddress, Port, UserName, Password, AppId);

  var connectedEvent = new ManualResetEvent(false);
  var cancel = new CancellationTokenSource();
  var connectedSuccessfully = false;
  var rootNode = default(SiteNode);

  var connectedTCS = new TaskCompletionSource<Result>(cancel);

mvacha

private async Task<Result<T>> Send<T>(string urlSuffix, Func<HttpContent, T> responseParser)
{
    try
    {
        var answer = await SendInternal(urlSuffix);
        if (answer.IsSuccessStatusCode)
        {
            return Result.Ok(responseParser(answer.Content));
        }
        else