title: How to get the fields name from a pdf file?
body: <p>I have a pdf file in an iframe and i want to check the pdf file to know the names of fields to allow  user to fill this fields from textboxes. </p>
  
  <p>This is my iframe and textbox for example:  </p>
  
  <pre><code> &lt;iframe id="frmDoc" runat="server"  style="width:800px;height:1200px;"&gt;&lt;/iframe&gt;
          &lt;asp:TextBox ID="TextBox1" runat="server"&gt;&lt;/asp:TextBox&gt;
  </code></pre>
  
  <p>and this is the code to show the pdf in the iframe:</p>
  
  <pre><code>protected void Page_Load(object sender, EventArgs e)
          {
              frmDoc.Attributes["src"] = "~/admin/minufia/6   نموذج إحصائي رقم.pdf";
          }
  </code></pre>
  
  <p>Please help me to solve this problem.</p>