Question

My VB.NET WinForms program (parent) calls another VB.NET Console program (child) with Process.Start(). The child application runs quickly and I would like a status message returned to the parent. How can I send a string from the child to parent?

Is there some built-in way because of the parent-child relationship or must I use some other interface like sockets?

Answer 1

Just to add some code to my other comment, imagine the following simple child program:

Module Module1
    Sub Main()
        Console.WriteLine("This is a test")
    End Sub
End Module

And here’s the parent:

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim P As New Process()
        P.StartInfo.FileName = "Child.exe"
        P.StartInfo.RedirectStandardOutput = True
        P.StartInfo.UseShellExecute = False
        P.Start()
        Dim T = P.StandardOutput.ReadToEnd()
        'Do something with T
    End Sub
End Class