Visual Basic

14-Jan-07 6:59

Hello All!

I have two forms in a project. vb.net. I just want to take the value from 1 textbox on a form, and put it in a string in another from.
My code.

 Public Sub frmGoodLuck_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load<br />
        Dim MainFrm As New Mainfrm<br />
<br />
        lblGoodLuck.Text = ("$" & MainFrm.txtTblID.Text.ToString & " has been added. & Good Luck!!")<br />
<br />
    End Sub<br />
End Class

What am I doing wrong?

Thanks! Rudy

MatrixCoder14-Jan-07 8:01

MatrixCoder

14-Jan-07 8:01

2 quick questions. Did you get an error message? And does the label txtTblID exist on MainFrm?

Trinity: Neo... nobody has ever done this before.
Neo: That's why it's going to work.

rudemusik14-Jan-07 9:23

14-Jan-07 9:23

Hi Matrix!

No error. and lblTblID does exsisit on Mainfrm.

Thanks!

Rudy Big Grin | :-D

MatrixCoder14-Jan-07 11:17

MatrixCoder

14-Jan-07 11:17

Well, I'm not sure what the problem is. But here are a few steps that might fix it:

1. Make sure that there's pre or otherwise set text in txtTblID.
2. Try saving your text to a variable, then reading the variable from your label.

And, what exactly happens when you try to set text to your label? Is the label just blank?

Trinity: Neo... nobody has ever done this before.
Neo: That's why it's going to work.

Christian Graus14-Jan-07 11:58

14-Jan-07 11:58

It's blank, because he's getting his value from a newly created instance of the form.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

Guffa14-Jan-07 11:39

Guffa

14-Jan-07 11:39

You are creating a new instance of the Mainfrm class. That instance will work independently from the one that already exists.

You have to use a reference to the form that already exists in order to access it's controls.

---
Year happy = new Year(2007);

rudemusik14-Jan-07 12:33

14-Jan-07 12:33

Hi Guffa!

Could you give me a quick example.

1) myMainfrm.Show()
myMainfrm.GetTblID(Me) NAME OF FORM <"loggonfrm">

2)Public Sub GetTblID(ByVal TblID As Loginfrm)
txtTblID.Text = TblID.txtTableid.Text
End Sub NAME OF FORM<"Mainfrm">

Something like this?

Thanks!
Rudy

Christian Graus14-Jan-07 12:36

14-Jan-07 12:36

No - do NOT do this. Do NOT make your form elements public.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

Christian Graus14-Jan-07 11:57

14-Jan-07 11:57

Well, your whole approach is wrong, your controls should not be made public. Instead, expose a property called TblId, or whatever.

rudemusik wrote:
Dim MainFrm As New Mainfrm

This is your problem. You're creating a new MainFrm instance, which as no text on it. It's a different instance to the one that contains the text you want. You could get around this with a static property, or you can set up delegates to pass the info. It looks to me in this instance that you should either pass the value of the text to a constructor, or set a property that sets the GoodLuck label on this form, as MainFrm is obviously the class creating this one, and as you're handling the load event, it's obvious you want to set the text when the form opens.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

rudemusik14-Jan-07 18:08

14-Jan-07 18:08

Thanks Chris!

I see where my problem is. So what are some of the reasons I don't want to use Public? I never gave it much thought. What harm could it do?

Thanks!

Rudy Smile | :)

Christian Graus14-Jan-07 18:18

communication between forms

14-Jan-07 18:18

It's just bad practise. The whole point of OO is to write objects that hide their inner workings. Expose only what you need to, which in this case, is a string, not a textbox.

IT's not that your program won't work, just that it's better to form good habits.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

klakero14-Jan-07 3:51

klakero

14-Jan-07 3:51

i'm using VB 2003, i want to make form with a button that open another form and in do some processes, and close the form, but i want my first form to know when it's done so i can do another process.
anyone have any ideas on how to do it ?

Re: communication between forms

Colin Angus Mackay14-Jan-07 3:58

Colin Angus Mackay

14-Jan-07 3:58

You can read this article on passing data between forms[^]

Upcoming events:
* Glasgow Geek Dinner (5th March)
* Glasgow: Tell us what you want to see in 2007

My: Website | Blog | Photos

To attach to a Com+ Application

tamasu14-Jan-07 3:08

tamasu

14-Jan-07 3:08

How can I make my application attach to multiple com application? I would like to provide a list of com applications installed on the user's pc.

For this reason I can't create a reference to the com object during runtime. It should be dynamic as per user selection. It could be an Excel, Word or other com application.

Summary

1) To get a list of all com applications available on the user's pc

2) To create a reference dynamical to what the user chose.

Thanks

some Components it's location is changing by themselfs vb.net 2005

kindman_nb13-Jan-07 16:24

Re: some Components it's location is changing by themselfs vb.net 2005

13-Jan-07 16:24

Hi ..
It's funny problem that the components of the form is changing it's location by themselfs ,
I'm wondered D'Oh! | :doh:

jooooo

nlarson1113-Jan-07 17:19

nlarson11

13-Jan-07 17:19

Have you changed the property of the "anchor"?

Re: some Components it's location is changing by themselfs vb.net 2005

kindman_nb13-Jan-07 17:49

Re: some Components it's location is changing by themselfs vb.net 2005

13-Jan-07 17:49

Yes I changed it ,
Is any problem on that .?

thanks for reply Rose | [Rose]

jooooo

Christian Graus13-Jan-07 18:12

Re: some Components it's location is changing by themselfs vb.net 2005

13-Jan-07 18:12

What did you think it did ? It moves the control.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

kindman_nb13-Jan-07 18:16

Re: some Components it's location is changing by themselfs vb.net 2005

13-Jan-07 18:16

I think that Anchor propery is keep a constante distanse between a certain aidge of the form , like Top:Left ,,
I think that is useful on resizing the form ,,
it's it ,,,
if that is true then why the location of components is changing but themselfes ,, really Confused | :confused:

jooooo

nlarson1114-Jan-07 4:27

nlarson11

14-Jan-07 4:27

you are correct. the anchor will also resize the control if you have both either off the opposite sides of the anchor set top/bottom or left/right.

if you have the windowstate set to maximize in design time, when you run the app, it could possibly move the controls depending on how you have the anchor set. if you have everything set as top/left (default) then none of the controls should be moved around...

Re: some Components it's location is changing by themselfs vb.net 2005

kindman_nb14-Jan-07 16:53

Re: some Components it's location is changing by themselfs vb.net 2005

14-Jan-07 16:53

Thanks for reply
I mean that the controls is changeing it's location at design time not at run time ,,

on every time I open the project I found that the location of controls is cahnged , on every time I found that the items is go to the right and bottom may be 2 point , on my project I'm using some components whick is designed by some friends like panels ,,
I'm installing vb.net 2005 service pack 1 ,
and the prlblem is still ,,

Really it's a thing make me wondered Confused | :confused:

jooooo

nlarson1115-Jan-07 3:19

nlarson11

15-Jan-07 3:19

have you asked your friends if their components use anchors? maybe it's there stuff that is causing the confusion...

Re: some Components it's location is changing by themselfs vb.net 2005

kindman_nb15-Jan-07 5:30