emoacht

public static class TaskHelper
{
    public static async Task<IEnumerable<TResult>> EnumerateTaskResults<TResult>(IEnumerable<Func<TResult>> source, TimeSpan timeout, CancellationToken cancellationToken)
    {
        var enumerateTasks = source
            .Select(x => Task.Run(() => x.Invoke()))
            .ToArray();

        var timeoutTask = Task.Delay(timeout, cancellationToken);

emoacht

// using System.Windows;
public class TupleTest
{
    public void TupleClipboardTest1()
    {
        (int, string) original = (11, "Eleven");

        Clipboard.SetData(DataFormats.Serializable, original);

        object retrieved = Clipboard.GetData(DataFormats.Serializable);

emoacht

public static class WindowHelper
{
    public static bool GetIsDragEnabled(DependencyObject obj)
    {
        return (bool)obj.GetValue(IsDragEnabledProperty);
    }
    public static void SetIsDragEnabled(DependencyObject obj, bool value)
    {
        obj.SetValue(IsDragEnabledProperty, value);
    }

emoacht

public static class WindowHelper
{
    public static byte[] GetImageData(FrameworkElement element)
    {
        var dpi = VisualTreeHelper.GetDpi(element);

        var rtb = new RenderTargetBitmap(
            (int)(element.ActualWidth * dpi.DpiScaleX),
            (int)(element.ActualHeight * dpi.DpiScaleY),
            dpi.PixelsPerInchX,

emoacht

Add-Type @"
using System;
using System.Runtime.InteropServices;

public static class MonitorHelper
{
  [DllImport("User32.dll")]
  public static extern IntPtr MonitorFromWindow(
    IntPtr hwnd,
    int dwFlags);

emoacht

public static async Task<string[]> ExecuteCommandAsync(string command)
{
    using var p = new Process();
    p.StartInfo = new ProcessStartInfo("cmd.exe")
    {
        CreateNoWindow = true,
        UseShellExecute = false,
        RedirectStandardInput = true,
        RedirectStandardOutput = true
    };

emoacht

<TextBlock>
    <TextBlock.Text>
        <!-- View is bound to View Model which has Version Version property. -->
        <MultiBinding StringFormat="v{0}.{1}">
            <Binding Path="Version.Major"/>
            <Binding Path="Version.Minor"/>
        </MultiBinding>
    </TextBlock.Text>
</TextBlock>

emoacht

[MarkupExtensionReturnType(typeof(object[]))]
public class ArrayConstructorExtension : MarkupExtension
{
    private readonly object[] _elements;

    public ArrayConstructorExtension(object a) => _elements = new[] { a };
    public ArrayConstructorExtension(object a, object b) => _elements = new[] { a, b };
    public ArrayConstructorExtension(object a, object b, object c) => _elements = new[] { a, b, c };
    public ArrayConstructorExtension(object a, object b, object c, object d) => _elements = new[] { a, b, c, d };
    public ArrayConstructorExtension(object a, object b, object c, object d, object e) => _elements = new[] { a, b, c, d, e };

emoacht

// using WinRT.Interop;

public void SetOwnerWindow(StoreContext context, Window window)
{
    var handle = new WindowInteropHelper(window).Handle;
    InitializeWithWindow.Initialize(context, handle);
}

emoacht

// using WinRT;

public void SetOwnerWindow(StoreContext context, Window window)
{
    var handle = new WindowInteropHelper(window).Handle;
    var initWindow = context.As<IInitializeWithWindow>();
    initWindow.Initialize(handle);
}