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Example 4: Encrypt a PDF file (ASP.NET)  
Copy the PDFsign .NET assembly from the c:\program files\neeviaPDF.com\PDFsign\dotNet\ folder into your web site bin folder;
encryptVB.aspx (VB.NET):
  <%@ Page Language="VB" %>
  <HTML>
  <HEAD>
     <SCRIPT runat="server">
        Sub Button1_OnClick(Source As Object, e As EventArgs)
   	  Dim NVsign As new Neevia.PDFsign

	  NVsign.PDFEncrypt = true
	  NVsign.PDFEncryptionType = "rc4"
	  NVsign.PDFOwnerPassword = "owner"

 	  ' p - document printing is denied
	  ' e - disable extraction of text and graphics
	  NVsign.PDFPermissions = "pe" 

	  Dim retVal
   	  retVal = NVsign.EncryptPDF("c:\in.pdf", "c:\out.pdf")
	  If retVal <> 0 Then
  	    Response.Write("Error code=" & CStr(retVal))
	  Else
	    Response.Write("Done")
	  End If
        End Sub
     </SCRIPT>
   </HEAD>
   <BODY><CENTER>
     <FORM id="Form1" enctype="multipart/form-data" method="post" runat="server">
     <INPUT id="Submit1" type="submit" value="Encrypt file" 
       OnServerClick="Button1_OnClick" name="Submit1" runat="server">
     </FORM>
   </BODY>
   </HTML>
encryptCsharp.aspx (C#):
<%@ Page Language="C#" %>
<HTML>
<HEAD>
   <SCRIPT runat="server">
      void Button1_OnClick(object Source, EventArgs e)
      {
	  Neevia.PDFsign NVsign = new Neevia.PDFsign();
	  int retVal;

	  NVsign.PDFEncrypt = true;
	  NVsign.PDFEncryptionType = "rc4";
	  NVsign.PDFOwnerPassword = "owner";

	  // p - document printing is denied
	  // e - disable extraction of text and graphics
	  NVsign.PDFPermissions = "pe";

	  retVal = NVsign.EncryptPDF(@"c:\in.pdf",@"c:\out.pdf");
	  if (retVal != 0) {
	    Response.Write("Error code = " + retVal.ToString());
	  } else {
	    Response.Write("Done");
	  }
      }
   </SCRIPT>
</HEAD>
<BODY><CENTER>
<FORM id="Form1" enctype="multipart/form-data" method="post" 
runat="server">
<INPUT id="Submit1" type="submit" value="Encrypt file"
OnServerClick="Button1_OnClick" name="Submit1" runat="server">
</FORM>
</BODY>
</HTML>

I find PDFresize to be an easy application to use especially when resizing batches of PDF files from separate folders. Thank you also for providing fast and effective customer support!

Bruno Verbeck

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