FPGACoder/HandyControl/HandyControl_Shared/Interactivity/Commands/CloseWindowCommand.cs

using System;
using System.Windows;
using System.Windows.Input;

namespace HandyControl.Interactivity;

public class CloseWindowCommand : ICommand
{
    public bool CanExecute(object parameter) => true;

    public void Execute(object parameter)
    {
        if (parameter is DependencyObject dependencyObject)
        {
            if (Window.GetWindow(dependencyObject) is { } window)
            {
                window.Close();
            }
        }
    }

    public event EventHandler CanExecuteChanged;
}