The properties exposed by the My.Application object return data that is associated only with the current application or DLL. No system-level information can be altered with My.Application.

Some members are available only for Windows Forms or console applications.

This example uses the My.Application.CommandLineArgs property to examine the application's command-line arguments. If an argument is found that starts with /input=, the rest of that argument is displayed.

Private Sub ParseCommandLineArgs()
    Dim inputArgument As String = "/input="
    Dim inputName As String = ""

    For Each s As String In My.Application.CommandLineArgs
        If s.ToLower.StartsWith(inputArgument) Then
            inputName = s.Remove(0, inputArgument.Length)
        End If
    Next

    If inputName = "" Then
        MsgBox("No input name")
    Else
        MsgBox("Input name: " & inputName)
    End If
End Sub

Namespace: Microsoft.VisualBasic.ApplicationServices

Class: WindowsFormsApplicationBase (the base class ConsoleApplicationBase provides members available in console applications, and its base class ApplicationBase provides the members that are available in all projects)

Assembly: Visual Basic Runtime Library (in Microsoft.VisualBasic.dll)

Reference