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Example 3: Stamp a PDF file with an image watermark (ASP.NET)  
Copy the PDFstamp .NET assembly from the c:\program files\neeviaPDF.com\PDFstamp\dotNet\ folder into your web site bin folder;
stampVB.aspx (VB.NET):
  <%@ Page Language="VB" %>
  <HTML>
  <HEAD>
     <SCRIPT runat="server">
        Sub Button1_OnClick(Source As Object, e As EventArgs)

	   Dim NVstamp as New PDFstamp.Neevia

	   Dim indx : indx = NVstamp.CreateNewStamp
	   NVstamp.Stamps(indx).StampType = 2
	   NVstamp.Stamps(indx).Name = "Stamp1"
	   NVstamp.Stamps(indx).ImageFile = "c:\stamp.jpg"
	   NVstamp.Stamps(indx).X = "center"
	   NVstamp.Stamps(indx).Y = "center"
	   NVstamp.Stamps(indx).PlaceAs = 1

	   Dim retVal
	   retVal = NVstamp.StampPDF("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="Stamp file" 
       OnServerClick="Button1_OnClick" name="Submit1" runat="server">
     </FORM>
   </BODY>
   </HTML>
stampCsharp.aspx (C#):
<%@ Page Language="C#" %>
<HTML>
<HEAD>
   <SCRIPT runat="server">
      void Button1_OnClick(object Source, EventArgs e)
      {

	   PDFstamp.Neevia NVstamp = new PDFstamp.Neevia();

	   int indx = NVstamp.CreateNewStamp();
	   NVstamp.get_Stamps(indx).StampType = 2;
	   NVstamp.get_Stamps(indx).Name = "Stamp1";
	   NVstamp.get_Stamps(indx).ImageFile = @"c:\stamp.jpg";
	   NVstamp.get_Stamps(indx).X = "center";
	   NVstamp.get_Stamps(indx).Y = "center";
	   NVstamp.get_Stamps(indx).PlaceAs = 1;

	   int retVal;
	   retVal = NVstamp.StampPDF(@"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="Stamp 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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