Missing using for Stream and StreamReader variables (#8559)

* Missing use for Stream and StreamReader variables

The WebClient variable has a using
Using client As New WebClient()

These were missing the using:
   Ref data As Stream = client.OpenRead(args(0))
   Ref reader As New StreamReader(data)

The order of Close for reader.Close and data.Close was reversed.

* Missed End Using

End Using need for VB.net

* Apply suggestions from code review

Co-authored-by: Bill Wagner <[email protected]>

Author: softwarepronto

snippets/visualbasic/VS_Snippets_Remoting/NCLWebClientUserAgent/VB/useragent.vb

@@ -16,13 +16,13 @@ Public Class Test
             ' requested URI contains a query.
             client.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)")
 
-            Dim data As Stream = client.OpenRead(args(0))
-            Dim reader As New StreamReader(data)
-            Dim s As String = reader.ReadToEnd()
-            Console.WriteLine(s)
-            data.Close()
-            reader.Close()
+            Using data As Stream = client.OpenRead(args(0))
+                Using reader As New StreamReader(data)
+                    Dim s As String = reader.ReadToEnd()
+                    Console.WriteLine(s)
+                End Using
+            End Using
         End Using
     End Sub
 End Class
-'</Snippet1>
+'</Snippet1>