title: get the pdf file rectangle(drawing) coordinates in c#
body: <p>I need to get all pdf rectangle coordinates(the drawing) i uploaded a pdf file.</p>
  
  <p>i used syncfusion pdfviewer to draw the rectangle. i asked them how to get the rectangle coordinates but they emailed me that the control doesn't have a functionality right now for that.</p>
  
  <p>this is the pdf file</p>
  
  <p><a href="https://drive.google.com/open?id=0B45rDxvaXzsmOGZiRXhRTnlmV2c" rel="nofollow">https://drive.google.com/open?id=0B45rDxvaXzsmOGZiRXhRTnlmV2c</a></p>
  
  <p>i'm searching for almost a day now but i can't find a way how to do it. </p>
  
  <p>this is the screenshot of the pdf</p>
  
  <p><a href="https://i.stack.imgur.com/Gxyd8.png" rel="nofollow"><img src="https://i.stack.imgur.com/Gxyd8.png" alt="enter image description here"></a>
  thank you. </p>