Non-negative number required. Parameter name: byteCount

Hej, jeg får følgende fejl nedenstående fejl når jeg forsøger dette:

Dim wr As WebRequest = WebRequest.Create("http://www.test.test")

Dim test As String = (New System.IO.StreamReader(wr.GetResponse.GetResponseStream)).ReadToEnd

den url jeg kalder er en side hvor der bliver skrevet 0 eller 1


Non-negative number required. Parameter name: byteCount
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentOutOfRangeException: Non-negative number required. Parameter name: byteCount