Re: Accessing parent controls in an MDI form fom the child forms by their name
- From: "R. MacDonald" <scitec@xxxxxxxxxxxxxxx>
- Date: Wed, 05 Jul 2006 08:27:31 +0200
Hello, Raj,
To access a control by name I think that you will have to search (recursively) through all controls until you find the one(s) that match the name you want.
To accomplish your ultimate goal (enabling/disabling menu items based on the current state of the application) I suggest that you reverse the responsibility. I.e. put the code to enable/disable child menu items in a handler for the parent menu's Popup event.
Cheers,
Randy
raj_genius wrote:
I hav two queries, whc are as follows:.
FIRSTLY:
is it possible to access the controls(by name) of a parent form(MDI)
from its child forms??if yes then how??plzz provide a coded example in
VB if possible..
for example..i hav a menu in the parent form named "Administrator" whic
has an item "mnuLogIn"..now when i click on login..another child form
named "frmLogIn" is displayed..what i want to happen is this:
when login form(frmLogIn) is opened, the corresponding menu option in
the parent form (i.e menu option "mnuLogIn") should get disabled..and
when i close the "frmLogIn" child form..the menu item "mnuLogIn" in the
parent form should again be enabled.
so..what shud i write in the child form's(frmLogIn's) "closed" event
and "load" event..so tht it enables and disbles the corresponding menu
item(mnuLogIn) in the parent form's menu on these two events
respectively??
I ALREADY KNOW HOW TO DO THIS USING THE INDEX OF THE PARENT MENU
ITEM(i.e. by using Me.ParentForm.Menu.MenuItems(0).Enabled = False
..etc..)..but i want a way in whc i can access those menu items by
name..for example if the parent form's menu item's name is "mnuLogIn" ,
then i want to access it by the same name in the child form so that i
can chage the properties of the item in the parent form.is it
possible??if yes..i want the coded solution..if not,then why??
SECONDLY:
i hav an xml file whc has some database connectivity parameters, how
can i access them in a VB windows form??i mean how can i access data in
xml files in windows application?
suppose i hav the <connection string> , <database name> etc..as xml
values in an xml file..and i want tht evrytime i create a
connection/make a transaction, my applications reads these connection
parameters from this xml file instead of i specifying that in code and
establishes the connection/executes the query...can any1 show in VB
code how to do that??can any1 suggest a better way to store this
information in any other file other than XML..say in a text file..and
then the application can access and read necessary data by searching
for it in the file?
i hope some1 will take his time, interest and effort to answer my
queries..whc might be very easy for many..thanx
Raj
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