VB.net difficulty in using RedirectStandardInput for my program - vb.net

Question

I am trying to make a simple chat program in vb using netcat. Here is my code
Public Class Form1
Dim p As New Process
Dim pstrt As New System.Diagnostics.ProcessStartInfo
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Go()
End Sub
Sub Go()
pstrt.FileName = "cmd.exe"
pstrt.Arguments = "/c nc -l -p1234"
pstrt.UseShellExecute = False
pstrt.RedirectStandardOutput = True
pstrt.RedirectStandardInput = True
AddHandler p.OutputDataReceived, AddressOf yo
p.StartInfo = pstrt
p.Start()
p.BeginOutputReadLine()
End Sub
Sub yo(ByVal sender As Object, ByVal e As DataReceivedEventArgs)
UpdateTextBox(e.Data)
End Sub
Private Delegate Sub UpdateTextBoxDelegate(ByVal Text As String)
Private Sub UpdateTextBox(ByVal tot As String)
If Me.InvokeRequired Then
Dim delgt As New UpdateTextBoxDelegate(AddressOf UpdateTextBox)
Dim args As Object() = {tot}
Me.Invoke(delgt, args)
Else
RichTextBox1.Text &= tot & Environment.NewLine
End If
End Sub
Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
'Shell(TextBox1.Text)
'Console.WriteLine(TextBox1.Text)
p.StandardInput.WriteLine(TextBox1.Text)
End Sub
End Class
The form has a richtextbox, a textbox and two buttons.
The problem is that:
when using redirectstandardinput, the received text is not displayed in richtextbox but the sent text can be viewed by the receiver.
when I don't redirectstandardinput then the received text is displayed in the richtextbox but the sent text cannot be viewed by the receiver.
I have also tried to use the commented code (for button2 click code) to use to send text when not using redirectstandardinput.

Answer 1

For me, your code is working correctly without changes, with
pstrt.RedirectStandardOutput = True
pstrt.RedirectStandardInput = True
See the screenshot:
I guess your problem can be with netcat.
Try with simple commands first like seen on the sample.
Try on another machine. I tested on Windows 8.0, .NET 4.0.