Select multi page annotations in ASP.NET Core PDF Viewer control

To select a multi-page TextMarkup annotation as a single annotation in a Syncfusion PDF viewer, you can use by enabling the enableMultiPageAnnotation property. By default it is false.

Here is an example of how you can use the enableMultiPageAnnotation property to select the multi page TextMarkup annotation as a single annotation, export and import multi page annotation:

Standalone

<div style="width:100%;height:600px">
    <ejs-pdfviewer id="pdfviewer"
                   documentPath="https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf"
                   enableMultiPageAnnotation=true>
    </ejs-pdfviewer>
</div>

Server-Backed

<div style="width:100%;height:600px">
    <ejs-pdfviewer id="pdfviewer"
                   serviceUrl='/Index'
                   documentPath="https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf"
                   enableMultiPageAnnotation=true>
    </ejs-pdfviewer>
</div>