writing to registry with a assembly

[PJ6]

hi@all!

I have a component (assembly) with an object that writes data to a registry key.

When this is run from a Windows app, it works like a charm. When run from a web app, it doesnt work.

here is the code:

  Public Function sendandprint(ByVal path As String)

      Dim Key As Microsoft.Win32.RegistryKey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey("Software\pdfMachine\BroadGun pdfMachine", True)
        Dim f As New RegistryPermission(RegistryPermissionAccess.AllAccess, Key.Name)
        f.Assert()


        Dim success As Integer
        Dim strfile As String
        Dim strpath As String
        Dim pdffile As String

        Dim reader As StreamReader = New StreamReader(path + "pdfpath.txt")
        pdffile = reader.ReadLine
        reader.Close()

        Try
            If Not IsNothing(Key) Then
                Key.SetValue("DefaultSaveDir", path)
                Key.SetValue("DefaultSaveFilename", pdffile)
                strfile = Key.GetValue("DefaultSaveFilename")
                strpath = Key.GetValue("DefaultSaveDir")
                Key.Close()
                Dim fs4 As New FileStream(path & "print.txt", FileMode.Append)
                Dim sw4 As New StreamWriter(fs4)
                sw4.WriteLine("done")
                sw4.Close()

            Else
                Dim fs4 As New FileStream(path & "print.txt", FileMode.Append)
                Dim sw4 As New StreamWriter(fs4)
                sw4.WriteLine("is nothing")
                sw4.Close()
            End If
        Catch ex As Exception
            Dim fs4 As New FileStream(path & "print.txt", FileMode.Append)
            Dim sw4 As New StreamWriter(fs4)
            sw4.WriteLine(ex.Message + " Fehler beim Schreiben")
            sw4.Close()
        End Try

End Function

thx for any suggestions u have!

greetings