passing data from Form2 to Form1

[sangfroid]

Hi,
I have 2 forms , Form1 and Form2. When I click on the "Ok" buttom of the Form 1, it creates an instance of Form2 as below

Form2 newform = new Form2();
newform.Show();


Form2 has a textbox which accepts input from user. I am able to get the Form2 and its textbox, but I am having problems of passing data from Form2 to Form1. Sending data from Form1 to Form2 is not a problem. But here it is the reverse case. How do i pass the data in textbox of Form2 to Form1 ??

[eclipsed4utoo]

set the "Modifiers" property of the textbox to "Public", then...


newform.ShowDialog();
string dataFromForm = newform.textBox1.Text;
newform.Dispose();

[MMH]

Hi,
I have 2 forms , Form1 and Form2. When I click on the "Ok" buttom of the Form 1, it creates an instance of Form2 as below

Form2 newform = new Form2();
newform.Show();


Form2 has a textbox which accepts input from user. I am able to get the Form2 and its textbox, but I am having problems of passing data from Form2 to Form1. Sending data from Form1 to Form2 is not a problem. But here it is the reverse case. How do i pass the data in textbox of Form2 to Form1 ??

Use delegate and events to send info from form2 to form1
Have a look into the attached file....

Hope this is what you are looking for..
MMH...

[darwen]

It depends on how you want Form2 to behave.

If you want it to behave like a FileOpen dialog (i.e. stops all input into Form1 until it's closed) use eclipsed4utoo's suggestion but with one change :

DONT MAKE MEMBER VARIABLES PUBLIC

This breaks encapsulation. You should instead have a public property which returns the text in the text box e.g.


public class Form2 : Form
{
private TextBox _textBox;

public string TextBoxText
{
get
{
return _textBox.Text;
}
}
}


However if you want Form2 to open and stay open whilst the user does things with Form1 then you should use MMH's suggestion of having an event.

Darwen.

[Talikag]

You can also send data through the constructor of Form2...

Form2 form2 = new Form2("hi", "sup?", "bye");
using(form2)
{
form2.ShowDialog();
}

[MMH]

You can also send data through the constructor of Form2...

Form2 form2 = new Form2("hi", "sup?", "bye");
using(form2)
{
form2.ShowDialog();
}


He wants to send data from form2 to form1 and not vice-versa.