Communication between forms

Question

2.00/5 (4 votes)

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VS2012

Please help me, I have a project and have 3 form, form 1 is for name and lastname, form 2 is for school and university, form 3 is to display all the data ..How can i display data from textbox1 in form 1 and form 2 to form 3??

Look Guys ..
To make my problem clear
I have two forms..

Form 1: 1 textbox and 1 button ( button don't show the name that user enter in txtbox but open form 2)

Form 2: 1 txtbox and button, (in txtbox form 1 user enter name) in this txtbox form 2 the user enter his lastname...The button will show a msgbox wich show up the name and lastname..

how can i do it?

I tried like thi: but it doesn't work out :/

VB

Private Sub Command1_Click()
Static name As Integer
Static lastname As Integer
firstname = txtFirstName.Text
LastName = txtLastName.Text
txtFirstName.Text = Form1.txtFirstName.Text
txtLastName.Text = Form2.txtLastName.Text

both = (Form1.txtFirstName.Text " & & " Form2.txtLastName.Text)
MsgBox (both)

End Sub

Posted 27-Dec-12 9:18am

San Dra

Updated 31-Dec-12 8:37am

Christian Graus

v4

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Comments

Richard C Bishop 27-Dec-12 15:19pm

Post the code of the forms your have so far.

San Dra 30-Dec-12 10:20am

How?

Sergey Alexandrovich Kryukov 27-Dec-12 15:31pm

Not quite a good question. What do you mean how? How to write code? What part of it? It's hard to help if you don't explain a particular problem.
—SA

San Dra 30-Dec-12 10:21am

I mean where I have to write the code?

Look Guys ..
To make my problem clear
I have to forms..
Form 1: 1 textbox and 1 button ( button don't show the name that user enter in txtbox but open form 2)
Form 2: 1 txtbox and button, (in txtbox form 1 user enter name) in this txtbox form 2 the user enter his lastname...The button will show a msgbox wich show up the name and lastname..

how can i do it?

I tried like thi: but it doesn't work out :/

<pre lang="vb">Private Sub Command1_Click()
Static name As Integer
Static lastname As Integer
firstname = txtFirstName.Text
LastName = txtLastName.Text
txtFirstName.Text = Form1.txtFirstName.Text
txtLastName.Text = Form2.txtLastName.Text

both = (Form1.txtFirstName.Text " & & " Form2.txtLastName.Text)
MsgBox (both)

End Sub</pre>

I have stuck

Sergey Alexandrovich Kryukov 30-Dec-12 13:14pm

OK, is your problem solved by now?
—SA

San Dra 31-Dec-12 7:04am

Not quite well...I'm still trying, searching on net so

Sergey Alexandrovich Kryukov 31-Dec-12 11:55am

I asked because when you sent your previous comment you had a solution or two. So, I asked, without reading them, is you still need help, with what...
—SA

San Dra 31-Dec-12 13:58pm

with the same problem, i thought it could work, but still the first question

ridoy 28-Dec-12 2:27am

Remember we can't see your project even what you do in your code,so to get better help you need to show us what you had tried and post your code here.

San Dra 30-Dec-12 10:22am

Check out the question update I made :)
Hope to help me...

Christian Graus 31-Dec-12 14:37pm

Consider using a non retarded subject line. Your tags tell us you're using VB, and the fact you're asking a question tells us you want help.

San Dra 31-Dec-12 16:39pm

yess..You are finding good subject for my question

3 solutions

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Oleksandr Kulchytskyi · Accepted Answer · 2012-12-27T09:39:00

Solution 1

Yo might to create some container , where you can store all data from various forms.
But one thing that you should consider, this holder/container must behaves like singleton! Use singleton pattern for it!

And one important moment, in future , please , primiraly try to write some code by yourself , and only in case of some confusion or error , ask comunnity for help!

Posted 27-Dec-12 9:39am

Oleksandr Kulchytskyi

Comments

San Dra 30-Dec-12 10:24am

I have a project with student grades, but include their names..now how do I display in the end all the data from forms previous..?

Sergey Alexandrovich Kryukov · Accepted Answer · 2012-12-31T08:08:00

This is the popular question about form collaboration. The most robust solution is implementation of an appropriate interface in form class and passing the interface reference instead of reference to a "whole instance" of a Form. Please see my past solution for more detail: How to copy all the items between listboxes in two forms[^].

Please also see other solutions in this discussion. If the application is simple enough, the solution could be as simple as declaring of some internal property in one form and passing a reference to the instance of one form to the instance of another form. For more complex projects, such violation of strictly encapsulated style and loose coupling could add up the the accidental complexity of the code and invite mistakes, so the well-encapsulated solution would be preferable.

Please see also:
http://en.wikipedia.org/wiki/Accidental_complexity[^],
http://en.wikipedia.org/wiki/Loose_coupling[^].

I would also add that your design does not seem good. I would strongly advise to review it, but I cannot suggest any particular design as right now I don't know your goals. First of all, I would avoid multi-form design at all. In most cases, one but more complex form is quite enough, but it also more convenient for the users. What you have now as a separate form can become some container control. Such as Panel or TabPage. You can hide one panel and show another one, you can activate different pages of TabControl, one at a time, or even develop more complex dockable design (similar to that of Visual Studio). Please think about it.

Happy New Year!

—SA

Ashok19r91d · Accepted Answer · 2012-12-27T18:43:00

Solution 2

Place TextBox or LabelBox, or DataGridView in Your 3rd Form
Here i've Write Code to Display Details from Form1 and From2 to TextBox(s) in Form3...

txtFristName.Text = Form1.txtFirstName.Text

Write Similar Code for all Fields,

If this answer not you Looking for? Just Improve your Question and Be Specific with your Problem...

Posted 27-Dec-12 18:43pm

Ashok19r91d

Updated 30-Dec-12 4:33am

v2

Comments

Christian Graus 28-Dec-12 0:46am

This is really awful, about the worst possible solution. No form should ever expose it's UI elements.

Ashok19r91d 28-Dec-12 0:55am

Who say so? Objects Properties can be right to access from Anywhere in Project... Only thing Your Object have Modifiers Property of Object to Friend...

This Solution not applicable for Webforms...

Christian Graus 28-Dec-12 2:00am

Sure - there's always a difference between what a beginner will do because it works, and what a real programmer does to write a clean, maintainable system. This will work. It's just ugly and not suitable for real world systems.

Ashok19r91d 28-Dec-12 2:17am

If so Ignore my My Solution, Sorry for wasting your time...

Sergey Alexandrovich Kryukov 31-Dec-12 17:36pm

It's too late to ignore... :-) Or does it mean that you don't want to listen to anything negative and hence don't want to learn on your mistakes? Christian meant to help you to learn one really practically important principle, which could be really useful for you, and what? — would you rather tend to close your eyes on good advice? If this is so, you can hardly learn...
—SA

San Dra 30-Dec-12 10:25am

I tried it but it didn't recognize the element form1.txtFirstName.Text in form 2 to display..

Ashok19r91d 30-Dec-12 23:13pm

OK, txtFirstName is the ObjectName, Replace that with Your TextBox's Name...

San Dra 31-Dec-12 7:06am

that works, it doesn't compile at all...but only in one form

Ashok19r91d 31-Dec-12 7:12am

CHeck Back Your Another Question, I've Update Full Source there...

San Dra 31-Dec-12 13:59pm

Ok

Communication between forms

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