Form refrences [Resolved]

Quick question on how to interact between one form and another
if you don't mind me asking.... I open Form2 with this:

Code:

---

Dim Frm As New Form2()
        Frm.ShowDialog()

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Now, when Form2 is opened I would like to click a button that will
show the hidden PictureBox that is on Form1 already. My problem
is not knowing how to refrence Form1's PictureBox property.

Code:

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Private Button1.Click (ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click

'Show the Picture Box that is hidden on Form1
PictureBox1.Visible = True
        PictureBox1.Update()


End Sub

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Hi,

Hopefully you have remembered to instantiate form1 as public - if you started from a module. Didn't we also once discuss that the modifier property of the controls in form1 should be set to "Public" if you want to refer to them from another form?

For the record: it's not easy for a person with a disability to learn something so complicated as programming. Especially when you are using forums like this, the Internet and scavaging everywhere you can find.

I did find a nice article that explains it all in a clear manner and isn't anything too hard to understand.

Managing Forms VB.NET Style

Quote:

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Originally posted by teamdad
For the record: it's not easy for a person with a disability to learn something so complicated as programming. Especially when you are using forums like this, the Internet and scavaging everywhere you can find.

I did find a nice article that explains it all in a clear manner and isn't anything too hard to understand.

Managing Forms VB.NET Style

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Sorry, I did not mean to be critical. I thought the best way for you to learn was to work it out from your previous posts and I gave you two pointers to possible causes.


Everybody.

Please have a look at the link above. I don't like it. The guy is creating a problem in the way he deals with the forms and then gives a solution for solving it:confused:

If a form is instanced properly, there is no problem with hiding it.
What do you guys think?

I normally do it like this....

Declare a Public variable in Form2 that will be a reference to Form1

Code:

---

Public myForm1 as Form1

---

Then, in the Constuctor in Form2, pass a variable to be assigned to the public variable:-

Code:

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    Public Sub New(ByRef passedform1 As Form1)
        MyBase.New()

        myForm1=passedform1

        'This call is required by the Windows Form Designer.
        InitializeComponent()...........

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Then any control on Form1 can be accessed thus:-

Code:

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myForm1.Control.Enabled=True

---

Then in the Disposing event:-

Code:

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myForm1=nothing

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This has always worked for me, but I do not protest it to be efficient! If anybody can let me know of a better way, I'd be grateful.

Hi,

That's OK if form1 is not your main form.

Normally a programme consists of a main form from which all the other forms are called. Then your method will simply create a second instance of form1 but there are many ways of cracking an egg - some messier than others:wave: