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using Microsoft.Xaml.Behaviors;
using System.ComponentModel;
using System.Reflection;
using System.Windows;

public class ChangeAttachedPropertyAction : TargetedTriggerAction<UIElement>
{
    public Type? ClassType
    {
        get { return (Type)GetValue(ClassTypeProperty); }

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using System.Diagnostics;

public class CancelableProcessTask
{
    private readonly string _filename;
    private readonly string _arguments;

    private Process? _process;
    private TaskCompletionSource? _tcs;

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using var bus = new MessageBus();
bool isCompleted = false;
var reactionDelay = TimeSpan.FromSeconds(0.25);
var timReactionDelay = TimeSpan.FromSeconds(0.3);
var ronnieSilenceThreshold = TimeSpan.FromSeconds(3);

bus.Messages
    .Subscribe(
        m => $"[{DateTime.Now:mm:ss.fff}] {m.Sender}: {m.Content}".Dump(),
        () => isCompleted = true

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using System.Windows;
using System.Windows.Controls;

public class GridHelper
{
    #region Rows & Columns

    public static string GetRows(DependencyObject obj)
    {
        return (string)obj.GetValue(RowsProperty);

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.md-alert-text {
    font-size: 1rem;
    font-weight: 600;
}

.md-alert-text-container::after {
    text-transform: uppercase;
    position: relative;
    bottom: 1px;
}

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var demo = new Demo();
demo.FieldValue = 10;
demo.PropValue = 10;

// 修改字段的值
ModifyFieldValue(ref demo.FieldValue, 42);
demo.FieldValue.Dump("Field Value");

// 修改属性的值
// ModifyFieldValue(ref demo.PropValue, 42);

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using System;
using System.Collections;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;

namespace DataGridView
{
    public class MultiSelectorHelper
    {

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<Window x:Class="WpfTutorials.NuGetValueConverters.Views.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:conv="clr-namespace:ValueConverters;assembly=ValueConverters"
        Title="登录"
        Width="800"
        Height="600"
        WindowStartupLocation="CenterScreen"

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from collections import Counter
from itertools import permutations
from matplotlib import pyplot as plt


COLS = 5
ROWS = 6

x1 = 10
x2 = 10

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

class ElementIndexConverter : IMultiValueConverter
{
    public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
    {
        if (values.Length == 2 && values[0] is not null && values[1] is IList items)
            return (items.IndexOf(values[0]) + 1).ToString();