How to hide the form when the form loads.

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VB

For Each arg As String In Environment.GetCommandLineArgs()
    If arg.ToLower = "-tray" Then
        Me.Hide()
        MsgBox("You have run -tray")
    End If
Next

The above code does not work.

'-Tray' run as Although the work Me.Hide events,

Form is not hidden.

I runned like a 'C:\Users\Owner\Documents\Visual Studio 2005\Projects\CommandStart\bin\Debug\CommandStart.exe -tray'.

I saw the MsgBox is shown.
But, form is not hidden.

How Can I Do?

Posted 24-Apr-10 17:15pm

rus204

Updated 26-Apr-10 3:54am

Tony Richards

v2

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6 solutions

Solution 1

You are probably running this code too early, before the form is actually shown. So, it's hidden, then it's still shown by the sequence of events when the form loads. I'd try to Load event and if that does not work, look for an event that fires when the form is first shown.

Posted 24-Apr-10 17:35pm

Christian Graus

Solution 2

What do I do?

If the event run so fast, I do not know how to solve it.

I create and run into another Sub, But, It still dosen't work.

Posted 24-Apr-10 17:47pm

rus204

Solution 3

You should not press 'answer' to ask more questions. You should perhaps buy a book on winforms. Your form generates events. They occur when certain things happen in the lifecycle of your form. You are running this code before the form is shown by the framework. Your code needs to run AFTER the framework shows the form. So you need to work out the right event to run your code in, for this to happen. I think the Load event is a good place to start.

Posted 24-Apr-10 17:53pm

Christian Graus

Solution 4

I think to help you properly is to understand what you are trying to do?

i have put your code in to the load of a form that i have open and it works like you have explain.

Posted 26-Apr-10 3:35am

Simon_Whale

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Gregory Gadow · Accepted Answer · 2010-04-26T03:53:00

Normally, a form is not displayed until Show or ShowDialog is called. The one exception is the main form, which can be minimized but not hidden.

You can write formless applications in VB.Net (probably C# too, but I'm not sure how to do that.) You will need to create a class based on ApplicationContext that will act as the application -- this will keep the application running without a primary form. Add a public module with the method Sub Main. In the My Project interface, uncheck "Enable application framework". Select "Sub Main" as the startup object. In Main, add the single line Application.Run with a new instance of your application context class.

I looked through the Code Project and didn't see any VB articles that demonstrate how to do this. I will work to remedy this lack of information and try to get something posted by the end of the week. In the mean time, try searching the web for "Sub Main" and "ApplicationContext" and see what you can find. If you can translate from C#, this article at CP, Creating a Tasktray Application[^] should help a lot.

Added - Article written: Create A Tray Application In VB.Net[^]. Let me know if it helps.

Henry Minute · Accepted Answer · 2010-04-26T12:23:00

Solution 6

The 'official' M$ way to do this is explained in Setting a Form to Be Invisible at Its Inception[^].

I've never tried it, so I don't know how effective it is.

Posted 26-Apr-10 12:23pm

Henry Minute