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  1. NullReferenceException when extracting PDF file...

    Hello, We are getting an exception when extractor some PDF files… System.NullReferenceException: Object reference not set to an instance of an object.\r\n at Aspose.Pdf.Facades.PdfExtractor.GetAttachNames()\r\n at …...this happened on a computer of one of our customers, who hasn’t...

    forum.groupdocs.com/t/nullreferenceexception-wh...
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  2. Licensing and evaluation | Documentation

    GroupDocs.Total provides different plans for purchasing or offers a Free Trial and a 30-day Temporary License for evaluation....license Apply the license using one of the methods described below...

    docs.groupdocs.com/total/net/licensing-and-eval...
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  3. Sign documents with encrypted metadata text | D...

    This article explains how to create encrypted Metadata electronic signature with GroupDocs.Signature API...encryption algorithm enumeration with one of following values ( ), string...

    docs.groupdocs.com/signature/java/sign-document...
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  4. Merge Open Document files | Documentation

    Learn how to merge Open Document files, combine ODT, ODS, ODP files into One file programmatically in Java language using GroupDocs.Merger for Java library....is an XML-based format and is one of the several subtypes in the...

    docs.groupdocs.com/merger/java/merge/open-docum...
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  5. Generating worksheets (tabs) preview for spread...

    This article describes how to generate a preview for any worksheet (tab) for the existing Excel spreadsheet in SVG format...worksheetIndex ++) { // Generate one preview as SVG image by worksheet...

    docs.groupdocs.com/editor/net/generating-worksh...
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  6. Save signed images with various output types | ...

    This article explains how to save images with various image format types.... Instantiate the one of required class of image format...

    docs.groupdocs.com/signature/java/save-signed-i...
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  7. Search for embedded and encrypted objects in QR...

     This section explains how to search for embedded electronic signatures into the QR-Code electronic signatures with GroupDocs.Signature API. Also this topic shows the way to customize data serialization and encryption same as provides the class definition with ability to embed it into the QR-Code electronic signature....key for encryption (at least one character) /// </summary> public...

    docs.groupdocs.com/signature/net/search-embed-n...
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  8. How to Run Examples | Documentation

    In this article you can find how to run examples. We offer multiple solutions on how you can run GroupDocs.Comparison examples, by building your own or using our back-end or front-end examples out-of-the-box.... Please choose one from the following list: Build...

    docs.groupdocs.com/comparison/net/how-to-run-ex...
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  9. GroupDocs.Redaction AI integration with .NET | ...

    Use AI to detect and redact text, words, or phrases in PDF documents using .NET. Replace or hide content to securely process PDF files....replace might have anywhere from one to four of these blocks. " +...

    blog.groupdocs.com/redaction/custom-ai-redactio...
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  10. Password Protect PDF Files in C# | Lock Unlock PDF

    Let's learn how to lock PDF files with password protection using C#. Change the existing password or remove it to unlock the PDF files using .NET API....programmatically with the new and difficult one. The following steps allow you...

    blog.groupdocs.com/merger/lock-unlock-pdf-files...
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