# Code Samples - Neevia PDFsign/encrypt

## Example 2: Sign a PDF file with an invisible signature - ASP.NET

Copy the PDFsign .NET assembly from the c:\program files (x86)\neeviaPDF.com\PDFsign\dotNet\ folder into your web site bin folder;
Scroll down for the C# samples

### Visual Basic Copy

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31  <%@ Page Language="VB" %>


### VC# Copy

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34  <%@ Page Language="C#" %>