controlscollection

[feurich]

I'm trying to add controls to a controls collection of a form by doing this:

 

Dim oADMvtrlColl as frmAdmin.Controlscollection '*** make an instance of the ctrlcollection of the admin form.

 

in an input form I try to add a controls dynamically by doing this:

oADMctrlColl.add(cbobox) '** Combo box has been created dynamically

 

But the error : object reference not set to an instance of an object

 

What am i doing wrong

 

Cire

[PlausiblyDamp]

would

me.controls.add(cbobox)

not work?

[feurich]

No because the combobox is on a different form.

 

I have a combobox input form frmCBInput and from that form I have to add a combo box with values to the frmAdmin form in a specific location.

 

Cire

[PlausiblyDamp]

given a valid instance of the frmAdmin held in a variable f you could do

 

f.Controls.Add(cbobox) then.

 

you cannot refer to frmAdmin direct as it is a class and not a running instance of the form.

[feurich]

When I add Byval f as frmMain to the parameter of the btnOK_click event of the frmLBInput form the last part of the line "Handles btnOK.click" gets an error.

 

Method 'btnOk_Click' cannot handle Event 'Click' because they do not have the same signature.

 

Where does the "Byval f as frmmain" need to go??

[PlausiblyDamp]

You could provide an overloaded constructor:

 

within frmLBInput add

private f as frmMain

sub New (frm as frmMain)
   f=frm
end sub

 

and when you create your instance of frmLBInput (from frmMain?)

dim frm2 as new frmLBInput(me)

[feurich]

2 input forms

 

Can you do this also with 2 input forms that reference the same frmAdmin form ?

[PlausiblyDamp]

Should be able to do it - just override the sub new for each of them

[feurich]

You where right

 

OK it was a typeo from my side..

 

 

:rolleyes:

[Nightyhawk]

Re: You where right

 

OK it was a typeo from my side..

 

 

:rolleyes:

 

Don't ya love typos. Spell checkers are your best friend, or else Code Smart which Microsoft is not thinking when they didn't create such a tool themselves :P