Check if Url Exists or not in ASP.NET

Public Shared Function IsValidUrl(ByVal Url As String) As Boolean
 Dim sStream As Stream
 Dim URLReq As HttpWebRequest
 Dim URLRes As HttpWebResponse
 Try
  URLReq = WebRequest.Create(Url)
  URLRes = URLReq.GetResponse()
  sStream = URLRes.GetResponseStream()
  Dim reader As String = New StreamReader(sStream).ReadToEnd()
  Return True
 Catch ex As Exception
  ‘Url not valid
  Return False
 End Try
End Function