Showing and hiding a form[Solved]

[haihems]

Hi,

I know vb6 but i'm new to vb.net.

In vb.net windows forms, I like to show from2 by clicking a button in from1. At that time I dont want the from1 still open (I want to close it or hide it). After working in form2 by clicking the button in that from, the form1 should be open.What can i do for that?

I did the following, but it is not working.....

vb coding:
'Form1 button click

Dim x as from2
x.show()
me.hide()

'Form2 button click

dim y as form1
me.close()
y.show()

This thing is working like , it hides form1 and show form2, after that while i click the button in form2 it closed and the form1 is shown. But when i closed the window vb couldn't close the project, it still running.

Please tell me the solution.

Thanks...

haihems

[mendhak]

Just a few threads below yours...

http://www.vbforums.com/showthread.p...hreadid=309022


If you do a search, you'll find lots of threads about this same issue. It's a popular one.

[Asgorath]

Hi

put the following in form2 class declaration

Private _form1_ As form1
Public Property MyForm1() As form1
        Get
            Return _form1_
        End Get
        Set(ByVal Value As String)
            _form1_ = Value
        End Set
End Property

form1 button1 click

dim f as new form1
f.MyForm1 = me
f.show
me.hide

form2 button1 click

if _form1_ is nothing then
   dim f as new form1
  f.show
  me.close
else
  _form1_.show
  me.close
end if

Regards
Jorge

[alextyx]

Uhmmmm....I think your code doesn't work just as you wrote, probably by memory, I guess!

Dim x as from2
x.show()
me.hide()

I think you wanted to write
Dim x as NEW form2
....etc...

Anyway, the point is another one! The solution to ur mistery is you don't close Form1, that probably is your starting object (Project---->Properties). You reistance a new form1:

dim y as form1 (you need as NEW....anyway!)
me.close()
y.show()

So you have to different instances of Form1. The first one was generated when your application started, the second one was generated by clicking button in form2.

You need only to write (in Form2's button click event)

Form1.show

So you reveal the previously hidden form!

To be sure that you can refer Form1, you should change your startup object (?)(.... I have italian version, so I'm not sure about terms used in the english one!) of the project, choosing Sub Main. So you can declare your Form1 as public in a module (the same where you put the sub main, generally) and so it will be referable from any point of your project. Something like:


Module Module1
Public F1 As Form1
Public F2 As Form2

Public Sub Main()
F1 = New Form1
Windows.Forms.Application.Run(F1)
End Sub

End Module

You can also use the shorter way, declaring and instancing at the same time, but I suggest you to keep habit to the longer one:

Module Module1
Public F1 As NEW Form1
Public F2 As NEW Form2

Public Sub Main()
Windows.Forms.Application.Run(F1)
End Sub

End Module


Good morning and good job, friend!

[alextyx]

In time I was composing my post Mendhak and Asgorath gave their answers....

How fast you are, friends!

[Asgorath]

Originally posted by alextyx
In time I was composing my post Mendhak and Asgorath gave their answers....

How fast you are, friends!

Hi alextyx , i being using properties to access for forms for a long time its just a matter of changing the name of the forms

[mendhak]

In fact, mendhak traveled back in time to answer someone else, then he came back and linked to the existing answer.

[haihems]

Hi Asgorath

Thanks for your reply...

I've tried your coding, but i got the following 3 build errors:

1) 'MyForm1' is not a member of 'WindowsApplication3.Form1'.
2) 'Set' parameter must have the same type as the containing property.
3) Value of type 'String' cannot be converted to 'WindowsApplication3.Form1'.

Why it is coming like this and what can I do for that????

Please tell me...

[fret]

hii...
in the form 1:

Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim f As New Form2(Me)
        f.Show()
        Me.Hide()
    End Sub

in the form2:

Public Sub New(ByVal f As Form)
        MyBase.New()
 
        'This call is required by the Windows Form Designer.
        InitializeComponent()
        Me.f = f
        'Add any initialization after the InitializeComponent() call
 
    End Sub
 
Dim f As Form1
    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Me.Hide()
        f.Show()
    End Sub

[Asgorath]

Hi haihems
Corrected the errors should work now ...

put the following in form2 class declaration

Private _form1_ As form1
Public Property MyForm1() As form1
        Get
            Return _form1_
        End Get
        Set(ByVal Value As form1)
            _form1_ = Value
        End Set
End Property

form1 button1 click

dim f as new form2
f.MyForm1 = me
f.show
me.hide

form2 button1 click

if _form1_ is nothing then
   dim f as new form1
  f.show
  me.close
else
  _form1_.show
  me.close
end if

Regards
Jorge

[haihems]

Hi all,

Thanks for ur help...now i know how to show & hide a form (but not so easy as VB6...isn't it?) Any how Thanks once again.

Regards,
Hems.