The zooming functionality of PdfViewer allows you to zoom in and out the document in order to take a close-up view or to see more of the page at a reduced size.
The control can be zoomed using the buttons in the toolbar component, or via the
ScaleFactor property of
ScaleFactor works with relative units where 1 is the default zoom level. Increasing the value will zoom in and decreasing it will zoom out.
this.pdfViewer.ScaleFactor = 0.5;