Visual Basic/VB, Variable Decloration

Ryan Sha
#1 / 4

Variable Decloration

With out creating a module to declare a Global Variable, how do I declare a
variable in a parent form so the child form called within can access it ??

Thanks Much
Ryan Shaw

Thu, 14 Feb 2002 03:00:00 GMT

Michael Satterwhi
#2 / 4

Variable Decloration

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Quote:

>With out creating a module to declare a Global Variable, how do I
declare a
>variable in a parent form so the child form called within can access

it ??

In the parent form declare the variable as public. Within the child
form, reference the variable as <formname>.<varname>

Example: Assume the parent form is named frmParent. You want to make
variable "x" accessible.

In the parent form declare:

Public x as long

In the child form reference the variable with

frmParent.x

Hope this helps.
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---Michael
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Thu, 14 Feb 2002 03:00:00 GMT

Kamel Hammam
#3 / 4

Variable Decloration

You can declare a Public variable in any form and call it from any other
form
if you add this line in the parent form
Public VarName
you can call it from your child form or from any other form
ParentForm.VarName
the variable will looks like a property of the parent form.
This call will load the parent form if it is not loaded.

Kamel

Quote:

>With out creating a module to declare a Global Variable, how do I declare a
>variable in a parent form so the child form called within can access it ??

>Thanks Much
>Ryan Shaw

Thu, 14 Feb 2002 03:00:00 GMT

Ian Phillip
#4 / 4

Variable Decloration

It might be better programming practice to add a set of property procedures
(Get, and Let/Set) instead of using a public variable. In general, public
variables should be avoided in class modules (and yes, a form is a class
module).

To implement the same property as Kamel did, I would do the following in the
form module:

In the Declarations section:
Private mvarVarName as VarType

Then, at the end of the module, I would add:

Public Property Get VarName() As VarType
VarName = mvarVarName
End Property

Public Property Let VarName (ByVal pNewVarName As VarType)
mvarVarName = pNewVarName
End Property

HTH,
ian

Quote:

> You can declare a Public variable in any form and call it from any other
> form
> if you add this line in the parent form
> Public VarName
> you can call it from your child form or from any other form
> ParentForm.VarName
> the variable will looks like a property of the parent form.
> This call will load the parent form if it is not loaded.

> Kamel

> >With out creating a module to declare a Global Variable, how do I declare a
> >variable in a parent form so the child form called within can access it ??

> >Thanks Much
> >Ryan Shaw

Sat, 16 Mar 2002 03:00:00 GMT