Nhận liên kết từ PDF trong .NET SDK

using Aspose.Pdf.Cloud.Sdk.Model;

namespace Links
{
    public class LinksExtractById
    {
        public static async Task ShowInfo(string documentName, string LinkID, string remoteFolder)
        {
        {
		// Get your AppSid and AppSecret from https://dashboard.aspose.cloud (free registration required). 
		pdfApi = new PdfApi(AppSecret, AppSid);

                using (var file = File.OpenRead(Path.Combine(localFolder, documentName)))
		{ // Upload the local PDF to cloud storage folder name.
                    FilesUploadResult uploadResponse = await pdfApi.UploadFileAsync(Path.Combine(remoteFolder, documentName), documentName);
                    Console.WriteLine(uploadResponse.Uploaded[0]);
                }

                // Get link annotations from the PDF in cloud storage.
                LinkAnnotationResponse response = await pdfApi.GetLinkAnnotationAsync(documentName, LinkID, folder: remoteFolder);

                // Checks the response and logs the result.
                if (response == null)
                    Console.WriteLine("LinksExtractById(): Unexpected error!");
                else if (response.Code < 200 || response.Code > 299)
                    Console.WriteLine("LinksExtractById(): Failed to receive link from the document.");
                else if (response.Link == null)
                    Console.WriteLine("LinksExtract(): link '{0}' not found in the document '{1]'.", LinkID, documentName);
                else
                { // Show link annotation.
                    Console.WriteLine("LinksExtractById(): link '{0}' successfully received from the document '{1}.", LinkID, documentName);
                    Console.WriteLine(response.Link.ToString());
                }
            }
        }
    }