By default, GroupDocs.Markdown detects the file format automatically from the file extension or stream content. When you want to skip auto-detection or the file extension is missing, specify the format explicitly using LoadOptions.
usingGroupDocs.Markdown;// Explicitly specify the format to skip auto-detectionvarloadOptions=newLoadOptions(FileFormat.Xlsx);usingvarconverter=newMarkdownConverter("cost-analysis.xlsx",loadOptions);converter.Convert("load-specific-format.md");
cost-analysis.xlsx is a sample file used in this example. Click here to download it.