Start Windows Form-App hidden, only Notifyicon


How can I start a windows form-application hidden, so that only a notifyicon is visible?
The form should be started...

Who is Participating?
Mike TomlinsonConnect With a Mentor Middle School Assistant TeacherCommented:
To show a form invisibly...set the Opacity() property at DESIGN-TIME to 0 (zero).

Then when you want it to show at RUN-TIME set the Opacity() property to 1.
Mike TomlinsonMiddle School Assistant TeacherCommented:
Here is a VB.Net 2003 version.

Click on Project --> "Add Existing Item..." and then change the "File name:" to "*.Ico" so you can select an Icon for your Tray Icon.  Once an Icon has been added to your project, select and then in the Properties for it, change the "Build Action" to "Embedded Resource".

You need to change "face04.ico" to the name of the icon you added to your project.

Obviously all this app does is have an "Exit" option.  You can either add more menus or trap the left click event on the NotifyIcon to show a form...

Module Module1

    Public Sub Main()
        Application.Run(New MyAppContext)
    End Sub

    Private Class MyAppContext
        Inherits ApplicationContext

        Private ni As New NotifyIcon
        Private cm As New ContextMenu
        Private mi As New MenuItem("Exit")

        Public Sub New()
            ni.Icon = New Icon(Me.GetType, "face04.ico")
            ni.ContextMenu = cm
            ni.Visible = True
            AddHandler mi.Click, AddressOf Me.mi_Click
        End Sub

        Private Sub mi_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            ni.Visible = False
        End Sub

    End Class

End Module
RuttensoftAuthor Commented:
Hi Idle_Mind

I think that this is for only Tray-Icon, without any form. But I'm searching a way to load a Form, but not showing it. So when I click on it, it should set the form.visible to true and bring it it front...

I can do that all, but not load the form without showing it, cause after form_load it is showing itself always...
RuttensoftAuthor Commented:
Ah Thanks, I did exactly that, but I took 100 instead of 1... :-)
Mike TomlinsonMiddle School Assistant TeacherCommented:
Yeah...that's inconsistent eh?

Design-Time = 0 --> 100
Run-Time = 0 --> 1
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.