How to manage your PDF Pages using Foxit PDF SDK (.NET)

In PDF development, a PDF page means much more than in the final user’s PDF editor or viewer. Page objects help group and identify multiple objects in the PDF to perform other operations. A PDFPage object is retrieved from a PDF document by function PDFDoc.getPage. Page level APIs provide functions to parse, render, edit (includes creating, deleting and flattening) a page, retrieve PDF annotations, read and set the properties of a page, and more. For most cases, a PDF page needs to be parsed before it is rendered or processed.

In this article, we will provide sample code examples for handling your pages using Foxit PDF SDK:

Example:

How to get page size

using foxit.pdf;using foxit.common;...// Assuming PDFPage page has been loaded and parsed....int width = (int)(page.GetWidth());int height = (int)(page.GetHeight());...

How to calculate bounding box of page contents

using foxit.pdf;...// Assuming PDFPage page has been loaded and parsed....RectF ret = page.CalcContentBBox(PDFPage.CalcMarginMode.e_CalcContentsBox);...

How to create a PDF page and set the size

using foxit.pdf;...// Assuming PDFDoc doc has been loaded.PDFPage page = doc.InsertPage(index, PageWidth, PageHeight);

How to delete a PDF page

using foxit.pdf;...// Assuming PDFDoc doc has been loaded.// Remove a PDF page by page index.doc.RemovePage(index);// Remove a specified PDF page.doc.RemovePage(page);...

How to flatten a PDF page

using foxit.pdf;...// Assuming PDFPage page has been loaded and parsed.// Flatten all contents of a PDF page.page.Flatten(true, (int)PDFPage.FlattenOptions.e_FlattenAll);// Flatten a PDF page without annotations.page.Flatten(true, (int)PDFPage.FlattenOptions.e_FlattenNoAnnot);// Flatten a PDF page without form controls.page.Flatten(true, (int)PDFPage.FlattenOptions.e_FlattenNoFormControl);// Flatten a PDF page without annotations and form controls (Equals to nothing to be flattened).page.Flatten(true, (int)(PDFPage.FlattenOptions.e_FlattenNoAnnot | PDFPage.FlattenOptions.e_FlattenNoFormControl));...

How to get and set page thumbnails in a PDF document

using foxit.pdf;...// Assuming PDFPage page has been loaded and parsed.// Get page thumbnails.page.LoadThumbnail();// Set thumbnails to the page. // Assuming Bitmap bitmap has been created.page.SetThumbnail(bitmap);...