Create a pause in stream.read?

[markclinn]

I have a device in the field that I access by the stream method.
I open the Stream and do the following:
1. stream.write a character to the device.
2. stream.read the information from the device.

The problem is that when I am debugging and step through the code there is a long enough pause that I recieve the entire string. If I just run it, I only get the 1st character. I have attached the code below.

Public Class Form1
Inherits System.Windows.Forms.Form
 
'Setup up a new socket
Public tClient As New System.Net.Sockets.TcpClient()
 
' Get a client stream for reading and writing.
Public stream As NetworkStream
Public str_Output_message As String
Public IP_Address As String = xxx.xxx.xxx.xxx
Public Port_Number As Integer = xxxxx
 
Public Sub i_Comm_Initilization()
 
tClient.ReceiveBufferSize = (256)
tClient.ReceiveTimeout = 3000
tClient.SendTimeout = 1000
'Create a TcpClient. 
tClient.Connect(IP_Address, Port_Number)
 
' Get a client stream for reading and writing.
stream = tClient.GetStream()
 
'get the information from the device
i_Read_Device_xmitB()
 
'Delete the recordstore and close the connection to the field device
i_delete_recordstore()
i_Close_Connection()
 
End Sub
 
Public Sub i_Read_Device_xmitB()
 
'Set the Output message
str_Output_message = "b"
 
Dim byt_receive_buffer(tClient.ReceiveBufferSize) As Byte
 
' Translate the message to be transmitted into ASCII and store it as a Byte array.
byt_array_data = Encoding.ASCII.GetBytes(str_Output_message)
 
str_returndata = ""
 
If stream.CanWrite And stream.CanRead Then
 
' Do a simple write.
' Send the message to the connected TcpServer. 
stream.Write(byt_array_data, 0, byt_array_data.Length)
 
stream.Read(bytes, 0, CInt(tClient.ReceiveBufferSize))
 
' Output the data received from the host to the console.
str_returndata = Encoding.ASCII.GetString(bytes)
 
stream.Write(byt_array_data, 0, byt_array_data.Length)
 
'Call the Data Breakout Routine
i_Data_Breakout()
 
End Sub

[Killer42]

I'd suggest a quick search of TheScripts (see search box at top right) for the Sleep API call. It has been discussed at least once or twice, and allows you to wait for a specified number of milliseconds without tying up the cpu.