Prevent Startup Form from Loading using Command Line Arguments

Question

Hi there
I'm developing a VB.NET windows forms application in VS2013.
The application will have 2 ways of being executed, one being by the user manually and the other being automated by the task scheduler.
When executed by the task scheduler, command line arguments will be used so that the application is aware that it is being run automatically and not by a user.
My problem is that I want the startup form to load when run by a user but I don't want it to load when it is run automatically, I just want to execute code.
Is it possible to prevent the startup form from loading by using the commandline arguments from the MyApplication_Startup event?
Cheers

Answer 1

Hi Aureuz,
>>Is it possible to prevent the startup form from loading by using the commandline arguments from the MyApplication_Startup event
It is impossible to accomplish it in the MyApplication_Startup event, we can use Form.Shown event:
#Form.Shown Event
http://msdn.microsoft.com/en-us/library/system.windows.forms.form.shown(v=vs.110).aspx
If we start a form by using the commandline arguments, the count of CommandLineArgs will be above one, if so, use Me.Hide() method to hide this form.
Private Sub Form1_Shown(sender As Object, e As EventArgs) Handles MyBase.Shown
Dim args As String() = Environment.GetCommandLineArgs()
If args.Count > 1 Then
Me.Hide()
Else
Me.Show()
End If
End Sub
You can also uncheck "Enable application framework" on the project properties application tab and select your startup object to a module object:
Module Module1
Sub Main()
Dim args As String() = Environment.GetCommandLineArgs()
If args.Count > 1 Then
'Run your background code
Else
Dim f As New Form1
f.ShowDialog()
End If
End Sub
End Module
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