iTextSharp z-index -

iTextSharp z-index -

i'm using itextsharp add together anotations in pdf document.

i have pdf document contains image saved in it, it's stamp.

so draw stroke on pdf in stamp , fine when draw them in wpf when send pdf email using itextsharp conversion line drawed below stamp.

how can solve problem ?

thank you

the explanation posted answer (btw, more apropos have been edit question contain data) explains issue.

there 2 principal types of objects visible on pdf page:

the pdf page content; annotations associated page.

the annotations displayed above page content if displayed @ all.

in case add together image pdf page content (using overcontent or undercontent changes in relation other pdf page content material additions appear). stamp, on other hand, realized means of annotation. thus, stamp annotation above additions.

if want have additions appear above stamp, either have add together additions kind of annotation, too, or have flatten stamp annotation page content before adding stuff.

which of these varients better, depends on requirements have. there requirements forcing stamp remain stamp annotation? there requirements forcing additions remain part of content? please elaborate requirements. content , annotations have different properties when displayed or printed, please state requirements.

and furthermore, please supply sample documents.

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