This article explains how to edit protected Word document, allow or restrict document editing features like adding comments or filling form fields using GroupDocs.Editor for .NET API....protection from opening by encrypting it with specified password...
Add password to PowerPoint presentations. Lock PPT files with password protection using free online app & programmatically using GroupDocs....them, like using watermarks, encrypting files, or putting passwords...
Not all metadata properties extracted from a file are marked with tags. Some file formats and metadata standards allow adding fully custom properties that can’t be properly tagged by the library since their purpose is not clearly defined in the appropriate format/standard specification. In such cases, you can use the name of the property to locate and remove it. The following example demonstrates some advanced usage scenarios of the GroupDocs.Metadata search engine allowing to remove metadata properties.... is_encrypted != True : print () print (...