API/samples for dealing with template pages in PDF?

[Henry]

How in C# do I do something like this Acrobat Javascript?

var t = this.templates; for ( var i=0; i < t.length; i++) { if('Disclaimer' == t[i].name) t[i].hidden = false; }

Your class

https://help.syncfusion.com/cr/file-formats/Syncfusion.Pdf.Graphics.PdfTemplate.html

Doesn't seem to be related to the Adobe template feature, or at least it doesn't list a "Hidden" attribute.

[Irfana Jaffer Sadhik]

Syncfusion PDF library provides support to Layers, also known as Option Content refers to sections of content in a PDF document that can be selectively viewed or hidden by document authors or consumers. This capability is useful in items such as CAD drawings, layered artwork, maps, and multi-language documents.

Essential PDF provides support to create, add and merge the layers into a PDF document.

We have created a simple sample for your requirement, Please try this on your end and let us know the result:

https://www.syncfusion.com/downloads/support/directtrac/general/ze/Create-a-new-PDF-document845748707

Follow the below links for more information,

https://help.syncfusion.com/file-formats/pdf/working-with-layers#toggling-the-visibility-of-layers

[Henry]

Yes, the confusion here is that SyncFusion templates are Acrobat layers and hence not at all related to Acrobat template pages.  See https://opensource.adobe.com/dc-acrobat-sdk-docs/library/jsapiref/doc.html#createtemplate

[Irfana Jaffer Sadhik]

A PDF template is a drawing surface, where contents can be added. All the elements that can be added to a PdfPage are supported in PdfTemplate as well. The template in turn can be drawn over the page or can be positioned at any part of the page.

We have created a sample for your reference. 

Sample: https://www.syncfusion.com/downloads/support/directtrac/general/ze/Create-a-new-PDF-document-606875364

Follow the below links for more information,

https://help.syncfusion.com/file-formats/pdf/working-with-pdf-templates