使用C#代码将RTF转换为HTML或图像

PM> Install-Package Spire.Doc

using Spire.Doc;
namespace ConvertRtfToHtml
{
    class Program
    {
        static void Main(string[] args)
        {
            // 创建一个 Document 实例
            Document document = new Document();
            // 加载 RTF 文档
            document.LoadFromFile("input.rtf");
            // 保存为 HTML 格式
            document.SaveToFile("RtfToHtml.html", FileFormat.Html);
        }
    }
}

using Spire.Doc;
using System.Drawing.Imaging;
using System.Drawing;
using Spire.Doc.Documents;

namespace ConvertRtfToImage

{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Document instance
            Document document = new Document();

            //Load an RTF document 
            document.LoadFromFile("input.rtf");

            //Convert the RTF document to images
            Image[] images = document.SaveToImages(ImageType.Bitmap);

            // Iterate through the image collection
            for (int i = 0; i < images.Length; i++)
            {
                //Save the image as png format
                string outputfile = string.Format("image-{0}.png", i);
                images[i].Save(outputfile, ImageFormat.Png);
            }
        }
    }
}