Imports System.Net
Dim Result As String = String.Empty
Dim url As String = "url della pagina che vuoi catturare"
Dim http As WebClient = New WebClient
Dim bResult As Byte() = http.DownloadData(url)
Dim ojbEncoded As Encoding = Encoding.GetEncoding("iso-8859-1")
Result = ojbEncoded.GetString(bResult)