URL per WebRequest auslesen

StringBuilder contentBuilder = new StringBuilder();
while (-1 != sr.Peek())
{
    contentBuilder.Append(sr.ReadLine());
        contentBuilder.Append("\r\n");
}
content = contentBuilder.ToString();

content = sr.ReadToEnd();

Public Shared Function GetUrlResponse(ByVal url As String,
 ByVal username As String, ByVal password As String) As String
    Dim content As String = ""

    Dim webRequest As Net.WebRequest = webRequest.Create(url)

    If username Is Nothing OrElse password Is Nothing Then
        Dim networkCredential As New Net.NetworkCredential(username, password)
        webRequest.PreAuthenticate = True
        webRequest.Credentials = networkCredential
    End If

    Dim webResponse As Net.WebResponse = Nothing

    Try
        webResponse = webRequest.GetResponse()
    Catch ex As Exception
    End Try

    If webResponse IsNot Nothing Then
        Dim sr As New IO.StreamReader(webResponse.GetResponseStream(),
         System.Text.Encoding.ASCII)
        content = sr.ReadToEnd()
    End If
    Return content
End Function

If username IsNot Nothing OrElse password IsNot Nothing Then