TcpClient, differences between VB and C#?

Question

Hello all, 

I really am not sure where to put this question. I am trying to use TcpClient on a windows form to communicate with a Cisco router at my college. I have code that works on a C# form just fine. The "identical", as far as I can tell, code for VB does not seem to work. Specifically, it will not display anything to the textbox that I set up on the form. However, if I step through the program in debug mode, with a breakpoint on line 24, as I step through the program, everything works as expected. Any ideas why this is happening?

VB Code (I took out the IP and Port for security reasons obviously)

 

1	Public Class Form1
2
3	Dim client As New Net.Sockets.TcpClient()
4	Dim stream As Net.Sockets.NetworkStream
5
6	Protected Sub GetResponse(ByRef stream As Net.Sockets.NetworkStream)
7
8	While (stream.DataAvailable)
9	Dim data(1024) As Byte
10	Dim response As String
11	Dim bytes As Int32
12	bytes = stream.Read(data, 0, bytes)
13	response = System.Text.Encoding.ASCII.GetString(data, 0, bytes)
14	TextBox1.AppendText(response)
15	End While
16
17	End Sub
18
19	Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
20	Dim ip As String = 'taken out
21	Dim port As Integer = 'taken out
22
23	client.Connect(ip, port)
24	stream = client.GetStream()
25
26	While (stream.DataAvailable)
27	GetResponse(stream)
28	End While
29
30	End Sub
31	End Class

Here is the corresponding C# code that works correctly all the time:

1	using System;
2	using System.Collections.Generic;
3	using System.ComponentModel;
4	using System.Data;
5	using System.Drawing;
6	using System.Text;
7	using System.Windows.Forms;
8	using System.Net.Sockets;
9
10	namespace WindowsApplication4
11	{
12	public partial class Form1 : Form
13	{
14	TcpClient client = new TcpClient();
15	NetworkStream stream;
16
17	public Form1()
18	{
19	InitializeComponent();
20	Application.Idle += new EventHandler(Application_Idle);
21	}
22
23	void Application_Idle(object sender, EventArgs e)
24	{
25	GetResponse();
26	txtCommand.Focus();
27	}
28
29	private void Form1_Load(object sender, EventArgs e)
30	{
31	string ip = "some number here ;-)"
32	int port = a port number here;
33	client.Connect(ip, port);
34	stream = client.GetStream();
35	while (stream.DataAvailable)
36	{
37	GetResponse();
38	}
39	}
40
41	private void btnSubmit_Click(object sender, EventArgs e)
42	{
43	SendResponse();
44	txtCommand.Text = "";
45	txtCommand.Focus();
46	}
47
48	private void SendResponse()
49	{
50	string command = txtCommand.Text;
51
52	Byte[] data = System.Text.Encoding.ASCII.GetBytes(command + "\r\n");
53
54	foreach (Byte b in data)
55	{
56	stream.WriteByte(b);
57	}
58
59	}
60
61	private void GetResponse()
62	{
63	while (stream.DataAvailable)
64	{
65	Byte[] data = new Byte[5112];
66	String response = String.Empty;
67	Int32 bytes = stream.Read(data, 0, data.Length);
68
69	response = System.Text.Encoding.ASCII.GetString(data, 0, bytes);
70
71	txtRouter.AppendText(response);
72	}
73	}
74	}
75	}

Any help would be appreciated!!

Thanks!