Here is my asp.net code:
'Initialize the string variables storing paths of PDF files
Dim FileOne As String = Server.MapPath("./New_Doc.pdf")
Dim OutFile As String = Server.MapPath("./New_Doc_1.0.pdf")
'Create input and output streams
Dim FileStreamOne As FileStream = New FileStream(FileOne, FileMode.Open)
Dim OutputStream As FileStream = New FileStream(OutFile, FileMode.Create)
'Instantiating PdfFileEditor object
Dim editor As PdfFileEditor = New PdfFileEditor()
'Setting the page number of the inStream2 as location where pages will be inserted
Dim location As Integer = 1
'Creating an array of Page Numbers to be inserted
Dim inf As New PdfFileInfo(FileStreamOne)
Dim pages() As Integer = New Integer() {1}
Try
Dim e As PdfContentEditor = New PdfContentEditor()
e.BindPdf(InputFile)
e.ReplaceText(FindText, ReplaceText)
e.Save(OutputFile)
'Closing output stream
FileStreamOne.Close()
OutputStream.Close()
Catch ex As Exception
'Closing output stream
FileStreamOne.Close()
OutputStream.Close()
Response.Write(ex.Message & "
" & ex.StackTrace)
End Try