By default, GroupDocs.Viewer does not render hidden items. To render them, set the RenderHiddenPages property of the ViewOptions class to true.
This feature is supported for the following format families:
Visio documents (for hidden pages)
PowerPoint presentations (for hidden slides)
Spreadsheets files (for hidden worksheets)
The following code snippet shows how to enable rendering of hidden items:
using(Viewerviewer=newViewer("sample.pptx")){// Create an HTML file.varviewOptions=HtmlViewOptions.ForEmbeddedResources();// Enable rendering of hidden items.viewOptions.RenderHiddenPages=true;viewer.View(viewOptions);}
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