.net core 2.2 使用imagemagick 将pdf转化为png

using System;
using System.IO;
using ImageMagick;

namespace pngTest
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("derek-moxlink");
            string path = @"/Users/zuibangbang/Desktop/123.pdf";
            MagickReadSettings settings = new MagickReadSettings();

            settings.Density = new Density(300, 300); //设置质量
            using (MagickImageCollection images = new MagickImageCollection())
            {
                try
                {
                    images.Read(path, settings);
                    for (int i = 0; i < images.Count; i++)
                    {
                        MagickImage image = (MagickImage)images[i];
                        image.Format = MagickFormat.Png;
                        image.Write(path.Replace(Path.GetExtension(path), "") + "-" + i + ".png");
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
            }
            Console.ReadKey();
        }
    }
}