Why does an out of memory exception occur when processing large Word documents in WPF DocIO?
Essential DocIO keeps the entire document contents (paragraphs, images, tables, and all other supported items along with the formatting) in main memory. Some documents may seem to have very few contents, but Essential DocIO uses more memory due to the rich set of formatting applied to the contents. In the case of opening a Docx file, you may think the file size is small, but Essential WPF DocIO utilizes very large memory. Whereas it is a zip archive file with the extension "docx," Essential DocIO internally decompresses it and populates the content in the document object model, utilizing remarkable main memory. The main memory utilized by an instance will not be released until the instance is removed from the document.
Hence, there is a chance for an "Out of memory exception" when the memory utilization exceeds the maximum level as the content of the document increases. Kindly split the contents into several documents or use high-configuration machines with extended RAM to create or open large-size documents comfortably.
Conclusion
I hope you enjoyed learning about why out-of-memory issues arise when processing large documents in WPF DocIO.
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