switch between usercontrols

[Johannes Hammersen]

Hi everyone,

I have a windows forms application with several full screen Usercontrolls.
Now I would like to be able to switsch between them. So that when you click
a button UC1 will become invissible an UC2 will become vissible.

Doing this from my Form that contains the UCs works fine. I have a Sub that
makes all UC invissible and then the needed UC Vissible again. That way I
can call any usercontrol from my Form. But how can i do the same from one of
the UC? So that when you push a button on UC1, UC1 will become Invissible
and UC2 will become vissible?

If possible I would like to put most of the needed code in my Form, or even
better a sepperate class, so that I don't have to add a lot to everysingle
UC.

Thank you for any help

Johannes

[Tom Spink]

Cast the UserControl's Parent property to the type of form it's put on:

Inside the UserControl:

Public Sub DoSwitch()
If (Not Me.Parent Is Nothing) AndAlso (TypeOf Me.Parent Is
TheParentForm) Then
DirectCast(Me.Parent, TheParentForm).CallParentMethod
End If
End Sub

--
HTH,
-- Tom Spink, Über Geek

Please respond to the newsgroup,
so all can benefit

"Maybe it's a game called 'Punish the User'"
"Johannes Hammersen" <Jo****************@x75.net> wrote in message
news:#9**************@TK2MSFTNGP12.phx.gbl...

Hi everyone,

I have a windows forms application with several full screen Usercontrolls.
Now I would like to be able to switsch between them. So that when you click a button UC1 will become invissible an UC2 will become vissible.

Doing this from my Form that contains the UCs works fine. I have a Sub that makes all UC invissible and then the needed UC Vissible again. That way I
can call any usercontrol from my Form. But how can i do the same from one of the UC? So that when you push a button on UC1, UC1 will become Invissible
and UC2 will become vissible?

If possible I would like to put most of the needed code in my Form, or even better a sepperate class, so that I don't have to add a lot to everysingle
UC.

Thank you for any help

Johannes

[Johannes Hammersen]

> You might want to try raising an even, ...

...Now in your form that contains the user control, create a handler for the event.

First of all thank you for your help!

I have a lot of usercontrols with a quite a few buttons so using your way I
would have to bulid a lot of eventhandler. Even if I would combine a lot of
them, I'd still would have to add the Event to the Handles list for every
button in every UC. That would make one long confusing list.

Johannes

[Johannes Hammersen]

Hi Jay,

Now the question becomes, does a single button on each UC take you to the
next UC? (like Prev & Next in a Wizard).
Or does each UC have a button for every other UC? (I have 15 UC, so I have
15 buttons). Kind of like that.
Every UC has a few butons to a few other UCs which have buttons to other
UCs.
So at the end you will have to "navigate" through a few UCs to get to a
certian one.
But on the other hand every UC will have a button to take you back to the
first UC after executing some code.

.... Protected Sub ShowUC(uc As UCBase)
' hide previous uc
' show new uc
End Sub

....

I think I understood your sample. So I'll try to build it into my project.
But I don't see how I could change the UC.visible Property form UCBase,
doesn't that need to be done in the form?

I tried somesthing like this before:
Private _myBaseForm as Form1
_myBaseForm = Me.ParentForm
_myBaseForm.HideAllUserControls()
_myBaseForm.UserControls(2).Visible = True

Which semed to work, execpt that I had to remove the "as Form1" because I
kept getting an message box saying: "Cast not valid" when I tried to add the
uc to the form.
Why can't I dim _myBaseForm as Form1?

Thanks for your help
Johannes