How do I pass arguments to another .NET application

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VB

I am testing a simple vb.net console application (call it the "child" ). I want to pass it some arguments from another application (i.e. the "Parent") and have it return an exit code.

Here is the code for the child app:

Public Sub Main()

    Environment.ExitCode = 0
    Dim tstr As String = ""

    For i As Short = 0 To My.Application.CommandLineArgs.Count - 1 Step 1
        tstr &= My.Application.CommandLineArgs(i) & vbCrLf
    Next

    If My.Application.CommandLineArgs.Count > 0 Then
        MsgBox("Number of Arguments: " & My.Application.CommandLineArgs.Count & vbCrLf & "Arguments: " & tstr)
        Environment.ExitCode = 1
    End If

    End

End Sub

Here is the code for the calling method in the parent app:

Private Sub ChkDBUtility() Handles cmdChkDBUtility.Click

    Dim iProcess As Process = Nothing
    If IsProcessRunning(mDBUtilName) = False Then
        ' the process is not running
        ' determine if the application is installed
        If IsFile(mFullUtilPgmName) = True Then
            Dim startInfo As ProcessStartInfo = New ProcessStartInfo(mFullUtilPgmName)
            startInfo.WindowStyle = ProcessWindowStyle.Normal
            startInfo.Arguments = "Test123"
            iProcess = Process.Start(startInfo)
            iProcess.WaitForExit()
            If iProcess.HasExited Then
                Dim i As Integer = iProcess.ExitCode
                MsgBox("Return code = " & i)
            End If
        End If
    End If

End Sub

Note: the variables "mDBUtilName" and "mFullUtilPgmName" are assigned elsewhere in the parent app and are correct.

The child application does not seem to get the passed parameters. That is, the

CommandLineArgs.Count

is never greater than zero.

What I have tried:

I have tried different ways of trying to get the command line arguments in the child app including:

Public Sub Main(ByVal args() As String)

And

Dim arguments As String() = Environment.GetCommandLineArgs()

in the Main sub.

I have also run the child app in debug mode in visual studio and set the command line arguments on the debug tab of the project. That seems to work okay.

I have tried wrapping the passed parameter in triple quotes.