如何将WPF大小转换为物理像素？

using System;
using System.Windows;

public static class WpfUtils
{
    public static double ConvertToPhysicalPixels(double logicalPixels)
    {
        PresentationSource source = PresentationSource.FromVisual(Application.Current.MainWindow);
        if (source != null)
        {
            double dpiX = 96.0 * source.CompositionTarget.TransformToDevice.M11;
            return logicalPixels * (dpiX / 96.0);
        }
        return logicalPixels;
    }
}

class Program
{
    static void Main(string[] args)
    {
        double wpfSize = 100; // 逻辑像素大小
        double physicalSize = WpfUtils.ConvertToPhysicalPixels(wpfSize);
        Console.WriteLine("物理像素大小: " + physicalSize);
    }
}