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PDF Printer Driver, Convert to PDF, Print to PDF
Example 1: Sign a PDF file with an invisible signature (ASP.NET)  
Copy the PDFsign .NET assembly from the c:\program files\neeviaPDF.com\PDFsign\dotNet\ folder into your web site bin folder;
signVB.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.CertificateSubject = "Test certificate"
	  NVsign.CertificatePassword = "password"

	  NVsign.Reason = "I am the creator of this document"

	  NVsign.Invisible = true

	  Dim retVal
   	  retVal = NVsign.SignPDF("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="Sign file" 
       OnServerClick="Button1_OnClick" name="Submit1" runat="server">
     </FORM>
   </BODY>
   </HTML>
signCsharp.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.CertificateSubject = "Test certificate";
	  NVsign.CertificatePassword = "password";

	  NVsign.Reason = "I am the creator of this document";

	  NVsign.Invisible = true;

	  retVal = NVsign.SignPDF(@"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="Sign file"
OnServerClick="Button1_OnClick" name="Submit1" runat="server">
</FORM>
</BODY>
</HTML>

Developing a solution that enables endusers to compress their PDF files is indeed an easy task with Neevia PDFcompress. Thank you!

Andrew Holden

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