Form1.Enable = True, but cannot set it back?

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Hi,

I have 2 forms "Form1" & "Form2"
In Form1, there is a button to click to open Form2 and set Form1.Enabled =
False

However, when i finish using Form2, i cannot Enable Form1?

In Form2, i did something like:

Dim f As new Form1
f.enabled = True
Me.close( )

So it should Enable Form1 and close itself, but it just doesn't.
What am i doing wrong here?

please help, thanks
 
Dim f As new Form1
f.enabled = True
Me.close( )
Click to expand...

You are creating a new (second) instance of Form1 (that has never been
shown). You need to set the enabled property on a reference to the Form1
instance that was previously disabled...

Not sure what you are attempting with the enabled property. Would
f.ShowModal better serve your goal?

Greg
 
Not sure what you are attempting with the enabled property. Would
f.ShowModal better serve your goal?
Click to expand...

I believe you meant f.ShowDialog :)

But yes - you're right - it seems f.ShowDialog would be the way to go for
the OP.


Imran.
 
Hi,
Both of my form is within a Parent Form, so i don't think i can use
ShowDialog.
but Anyway, the reason I want to use Enable is that my Form2 is smaller than
Form1, and when Form2 comes up, i want to disable everything on Form1 hence i
set the Form1.Enabled = False.

But the problem was once i finished with Form2, I cannot set Form1.Enabled =
True, because I cannot access the control of Form1 in Form2.

therefore i was playing around with
Dim f As new Form1
f.enabled = True
Me.close( )

but as you said its a wrong method of doing it.
So is it possible that you can give me an example of doing it correctly?
please

Many thanks for your help
Jon
 
Ok - since you want to do that anyway, there are several ways. Here's one:
Change the constructor (or you could event overload it - whichever way you
prefer) of Form2 to take in an argument which will be a reference to Form1
from which you are calling form2. Use that reference to enable/disable your
form.

Private m_frm As Form1

Public Sub New(ByVal frm As Form1)
MyBase.New()
m_frm = frm
End Sub

So, now your call to Form2 from Form1 would be:

Dim frm2 As New Form2(Me)
Me.Enabled = False
frm2.Show( )

And within your Form2, before you close down the form (or better - in the
Form2_Closing event), call:
m_frm.Enabled = True

I still think this isn't a very good idea. As Greg already mentioned, you
should look into showing up the second form as a modal form over the first
one since that is a more 'standard' design.

anyway, hope that helps..
Imran.
 
I still think this isn't a very good idea. As Greg already mentioned, you
should look into showing up the second form as a modal form over the first
one since that is a more 'standard' design.
Click to expand...

Thankyou very much for helping me.

I am still quite new to programming, so I do not know which is the best way
to do it. You mentioned about showing the form as a model?

Do you mind if you can tell me more about it? the proper way of doing it?
Sorry to bother you so much, but i would like to know more.
many many thanks.
Jon
 
Thankyou very much for helping me.

I am still quite new to programming, so I do not know which is the best way
to do it. You mentioned about showing the form as a model?

Do you mind if you can tell me more about it? the proper way of doing it?
Sorry to bother you so much, but i would like to know more.
many many thanks.
Jon
Click to expand...

To show a form modally, just call the ShowDialog method instead of Show:

'In Form1:

Dim f As New Form2
f.ShowDialog(Me)


'Now Form1 is effectively 'disabled' until Form2 closes, no need to change
it's enabled property.

--
Chris

dunawayc[AT]sbcglobal_lunchmeat_[DOT]net

To send me an E-mail, remove the "[", "]", underscores ,lunchmeat, and
replace certain words in my E-Mail address.
 
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