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Perfect !!!<br />
Perhaps I also can find if the document is digitally signed<br />
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Thank you very much!
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We are creating pdf/a files which are stored on a server together with &quot;normal&quot; pdf. For a overview I need to detect via code if it is a pdf or a pdfa file.
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We are creating pdf/a files which are stored on a server together with "normal" pdf. For a overview I need to detect via code if it is a pdf or a pdfa file.

How to check if a file is PDF/A in C#

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

Multimedia applications are those programs that integrate more than one media at a time; browsers are the most obvious. However, the term has come to include the use of programs that enable the use of any component that isn’t simple text and static graphics, such as audio, video, animation, virtual reality, conferencing and monitoring.

MultiMedia Applications

A Document Management System (DMS) is a system (both hardware and software) used to track, manage and store documents and reduce paper. Most are capable of keeping a record of the various versions created and modified by different users (history tracking). It is often viewed as a component of enterprise content management (ECM) systems and related to digital asset management, document imaging, workflow systems and records management systems.