use VB .NET to interact with pronsole.exe

Module1.vb

Imports System.IO

Module Module1
    Private Const PRONSOLE As String = "D:\Develop\Printrun-Win-Slic3r-03Feb2015\pronsole.exe"

    Public Sub Main()

        Dim process As Process = New Process With {
            .StartInfo = New ProcessStartInfo() With {
                .FileName = PRONSOLE,
                .UseShellExecute = False,
                .RedirectStandardInput = True,
                .RedirectStandardOutput = True,
                .RedirectStandardError = True
            }
        }

        AddHandler process.OutputDataReceived, AddressOf Process_OutputDataReceived

        process.Start()
        process.BeginOutputReadLine()

        Dim writer As StreamWriter = process.StandardInput
        writer.WriteLine("")
        'writer.WriteLine("help")
        writer.Close()

        process.WaitForExit()
        process.Close()

        Return
    End Sub

    Sub Process_OutputDataReceived(sender As Object, e As DataReceivedEventArgs)
        Dim data As String = e.Data
        Console.WriteLine(data)
    End Sub

End Module