เพิ่มคำอธิบายประกอบแบบ Polyline ลงในเอกสาร

using System;
using System.Collections.Generic;
using System.IO;
using GroupDocs.Annotation.Models;
using GroupDocs.Annotation.Models.AnnotationModels;
using GroupDocs.Annotation.Options;

string outputPath = Path.Combine("Your Document Directory", "result" + Path.GetExtension("input.pdf"));

using (Annotator annotator = new Annotator("input.pdf"))
{

PolylineAnnotation polyline = new PolylineAnnotation
{
    Box = new Rectangle(250, 35, 102, 12),
    CreatedOn = DateTime.Now,
    Message = "This is polyline annotation",
    Opacity = 0.7,
    PageNumber = 0,
    PenColor = 65535,
    PenStyle = PenStyle.Dot,
    PenWidth = 3,
    Replies = new List<Reply>
    {
        new Reply
        {
            Comment = "First comment",
            RepliedOn = DateTime.Now
        },
        new Reply
        {
            Comment = "Second comment",
            RepliedOn = DateTime.Now
        }
    },
    SvgPath = "M250.8280751173709,48.209295774647885l0.6986854460093896,0l0.6986854460093896,-1.3973708920187793l0.6986854460093896,0l0.6986854460093896,-1.3973708920187793l1.3973708920187793,-0.6986854460093896l0.6986854460093896,-0.6986854460093896l0.6986854460093896,0l2.096056338028169,-1.3973708920187793l3.493427230046948,-1.3973708920187793l0.6986854460093896,-0.6986854460093896l1.3973708920187793,-1.3973708920187793l0.6986854460093896,0l1.3973708920187793,-0.6986854460093896l0.6986854460093896,0l0.6986854460093896,-0.6986854460093896l0.6986854460093896,0l0.6986854460093896,0l0,-0.6986854460093896l0.6986854460093896,0l0.6986854460093896,0l1.3973708920187793,0l0,-0.6986854460093896l0.6986854460093896,0l1.3973708920187793,0l0.6986854460093896,0l1.3973708920187793,0l0.6986854460093896,0l2.096056338028169,-0.6986854460093896l1.3973708920187793,0l0.6986854460093896,0l0.6986854460093896,0l1.3973708920187793,0l1.3973708920187793,0l1.3973708920187793,0l2.096056338028169,0l5.589483568075117,0l1.3973708920187793,0l2.096056338028169,0l0.6986854460093896,0l1.3973708920187793,0l0.6986854460093896,0l1.3973708920187793,0l1.3973708920187793,0l0.6986854460093896,0.6986854460093896l1.3973708920187793,0l2.096056338028169,1.3973708920187793l0.6986854460093896,0l0.6986854460093896,0l0,0.6986854460093896l1.3973708920187793,0l0.6986854460093896,0.6986854460093896l1.3973708920187793,0.6986854460093896l0,0.6986854460093896l0.6986854460093896,0l1.3973708920187793,0.6986854460093896l1.3973708920187793,0.6986854460093896l3.493427230046948,0.6986854460093896l1.3973708920187793,0.6986854460093896l2.096056338028169,0.6986854460093896l1.3973708920187793,0.6986854460093896l1.3973708920187793,0l1.3973708920187793,0.6986854460093896l0.6986854460093896,0l0.6986854460093896,0.6986854460093896l1.3973708920187793,0l0.6986854460093896,0l0.6986854460093896,0l2.7947417840375586,0l1.3973708920187793,0l0.6986854460093896,0l1.3973708920187793,0l0.6986854460093896,0l0.6986854460093896,0l1.3973708920187793,0l0.6986854460093896,0l2.7947417840375586,0l0.6986854460093896,0l2.7947417840375586,0l1.3973708920187793,0l0.6986854460093896,0l0.6986854460093896,0l0.6986854460093896,0l0.6986854460093896,0l0.698685
4460093896,0l0.6986854460093896,0l0.6986854460093896,-0.6986854460093896l0.6986854460093896,0"
};

annotator.Add(polyline);

annotator.Save(outputPath);

Console.WriteLine($"\nDocument saved successfully.\nCheck output in {outputPath}.");