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Editorial Team
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Asked: 2026-05-22T14:30:48+00:00

I hooked into the question located at Replace image in word doc using OpenXML

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I hooked into the question located at “Replace image in word doc using OpenXML“. I noticed that there are several ImagePartType types. Is there any easy “built in” way to determine which type a specific image should be other than going by it’s extension? The ImagePartType enum is also used in PowerPoint as is alot of the WordProcessingML structures.,

For instance,
ImagePartType.Bmp on image1.bmp
ImagePartType.Emf on image1.emf
ImagePartType.Gif on image1.gif
ImagePartType.Icon on image1.ico
ImagePartType.Jpeg on image1.jpeg or image1.jpg
ImagePartType.Pcx on image1.pcx
ImagePartType.Png on image1.png
ImagePartType.Tiff on image1.tiff or image1.tif
ImagePartType.Wmf on image1.wmf

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1 Answer

  1. Editorial Team

    There is not – because you can have filename.png which is actually a bmp file and it all works fine. The only way to know for sure is to read the actual bitmap file and see what format it is in.

    You can do this either by loading it into an Image class, or just read the first couple of bytes and look for the signature of each of the formats.

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