emoacht

using System;
using System.Threading.Tasks;
using System.Windows.Interop;
using Windows.Storage.Pickers;

public static async Task<string?> OpenFileDialog(System.Windows.Window window)
{
    var picker = new FileOpenPicker()
    {
        ViewMode = PickerViewMode.Thumbnail

emoacht

<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow"
        Width="400" Height="200">
    <Window.Resources>
        <Style x:Key="RoundStyle" TargetType="{x:Type Button}">
            <Setter Property="Width" Value="100"/>
            <Setter Property="Height" Value="100"/>
            <Setter Property="Foreground">

emoacht

using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Windows;
using System.Windows.Media;

public static class DependencyObjectExtensions
{
    public static bool TryFindDescendant<T>(this DependencyObject reference, [NotNullWhen(true)] out T? descendant) where T : DependencyObject
    {
        var queue = new Queue<DependencyObject>();

emoacht

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;

internal static class TaskbarHelper
{
    [DllImport("user32.dll", CharSet = CharSet.Unicode)]
    extern static IntPtr FindWindow(
        [MarshalAs(UnmanagedType.LPWStr), In] string lpClassName,
        [MarshalAs(UnmanagedType.LPWStr), In] string? lpWindowName);

emoacht

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        this.Loaded += OnLoaded;
    }

    private async void OnLoaded(object sender, RoutedEventArgs e)
    {

emoacht

using System.Collections.Generic;
using System.Linq;
using System.Management;

public static class MonitorHelper
{
    public static IEnumerable<MonitorConnection> EnumerateMonitorConnections()
    {
        var @class = new ManagementClass(@"root\wmi:WmiMonitorConnectionParams");

emoacht

using System;
using System.Collections;
using System.Globalization;
using System.Windows.Data;

public class CollectionToBooleanConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        if (value is IEnumerable collection)

emoacht

using System;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Interop;
using System.Windows.Media;

public static class WindowHelper
{
    public static Point PointToScreen(Visual visual, Point point)
    {

emoacht

using System;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Interop;

public static class WindowHelper
{
    /// <summary>
    /// Moves a specified Window to the center of a monitor where the cursor locates.
    /// </summary>

emoacht

public static class EnumerableExtension
{
    public static IEnumerable<IGrouping<TSource, TSource>> GroupBy<TSource>(this IEnumerable<TSource> source, Func<TSource, bool> keyFinder)
    {
        if (source is null)
            throw new ArgumentNullException(nameof(source));
        if (keyFinder is null)
            throw new ArgumentNullException(nameof(keyFinder));

        TSource key = default;