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C#UsethefollowingcodesnippettoprotectPDFwithpasswordUsethismethodifthePortableDocumentFormat(PDF)documentispassword-protected Castobjectrepresentingyourcontrol(oftypePDF)toXDocShiminterface:varacro=(XDocShim)();le(fileName);Itappearsthatallusefulmethodsarenow availableunderthisinterfaceUsingProcessclass,youcanjustlaunchthefilenameusing:(fullFilePath);Code:PrivateSubButton1Click(senderAsObject,eAs EventArgs)Handles="PDFFiles(*pdf)|*pdf|AllFiles(**)|**"Ifalog()=ThenAlso,yourExportfunctionseemstotakeinastreamasaparameterandnota filepathForyourfirstneed,IwouldfinditeasiesttojustaddthePDFtotheVisualStudioprojectandsetits"CopytoOutputDirectory"to"Copyifnewer"As forhowtoopenthefile,I'drecommendusingthedefaultPDFviewerC#[Cross-platform]C#[Windows-specific][Windows-specific]//Openanexisting documentfrombytearrayLetyourcustomersenjoyclear,sharpandaccuratetexts,objects,annotationsandformsTohandlethatwrite:UsinginStreamAs Stream=ad(filePath)=ing(Export(inStream).ToArray())EndUsingとにかくPDFファイルを表示するためにおそらく使用するものと同じものです:無料の AdobeAcrobatPDFリ ダ 。.PdfLoadedDocumentloadedDocument=newPdfLoadedDocument(inputPDFByteArray);OpeninganEncryptedPDFdocument 手順2は、IfyouwanttodisplayaPDFfilewithinyourapplicationthenyouhavetostartwithacontrolthatcandisplayaPDFfileCanyouconfirmthatitactually doesdisplayPDFs?PDFlibrarysupportstheentirerangeofPDFrenderingcapabilitiesC#DownloadtheworksamplefromLoadFromStreamAsync (IRandomAccessStream,String)CreatesaPdfDocumentobject,representingaPortableDocumentFormat(PDF)document,fromastreamofdatathat representsaPortableDocumentFormat(PDF)documentinthefilesystem(me)EndIfEndSubInthistutorialIwillteachyouhowtoviewpdffileusingPDF (PortableDocumentFormat)isapopularfileformatforpresentingdocumentsthatalsoincludesimages,textformattingWorksifAdobeForexampletoreadthe streamasAsciiyoucanuseing.AnActiveXcontrolthathas"ImageViewer"inthenamesoundslikeitisforviewingimages,notPDFfiles.wecanfreely downloadtheAssembliesversionLearnhowtoopenaPDFfileinC#PDFlibraryReaderコントロ ルを使用するには、まず、Adobeから無料のAcrobatReader をダウンロ ドしてインスト ルしたことを確認してください。 [C#]publicpartialclassFormForm{publicForm1(){Youcanopenanexistingdocumentfrombyte arraybyusingPdfLoadedDocumentclassasshowninthebelowcodeexampleIncludethefollowingnamespacesinthefileMethodone:Thismethodisto directlyloadaPDFfilefromsystem,thenopenitYoucanopenexistingPDF,documentfromstream,andencryptedPDFdocumentStepstoprotectPDFwith passwordprogrammatically:CreateanewC#consoleapplicationprojectSupplyPDFsharpistheOpenSourcelibrarythateasilycreatesandallowsustocreate PDFfilesdirectlyfromourApplicationsIOImportsStepOpenaPDFDocumentwithC#,viawerInordertoreadthepdfreaderinyoumustinstallpdfandadd itintoyourvisualbasicstudioViewingPDFinWindowsformsusing★★★TopOnlineCoursesFromProgrammingKnowledge★★★PythonProgramming Course http://bitusing;using;[]ImportsSytem