How to pass variables to a new form?

Emmet_Brown

Hi everyone. I've got a listBox and a list of elements in it. I've got another windows form, and it will be created after an item in the listBox is double clicked. What I'm asking is; I want to "read" the name of the element from the list box, and then fill the new form according to this information. How can I pass the listBox1's selected Item's text to the new form? can anybody help?

Not Active

Create a constructor for the new form that takes the information necessary.

I know the language. I've read a book. - _Madmatt

Md Marufuzzaman

You can just simply write a custom property method for that.

Thanks Md. Marufuzzaman

Don't forget to click [Vote] / [Good Answer] on the post(s) that helped you. I will not say I have failed 1000 times; I will say that I have discovered 1000 ways that can cause failure – Thomas Edison.

Emmet_Brown

Oh I've not created a constructor about 3 years, I don't remember how to but I'll try, I'll try the articles

Emmet_Brown

you mean a public class that can be reached from the new form? is this it?

Not Active

You need to research articles to create a class constructor?!? :omg: Go read some books, take a class, whatever it takes but stop trying to write applications until you do.

I know the language. I've read a book. - _Madmatt

Md Marufuzzaman

Yes, but it depends on how you are going to use the class... you can also use a constructor.

Thanks Md. Marufuzzaman

Don't forget to click [Vote] / [Good Answer] on the post(s) that helped you. I will not say I have failed 1000 times; I will say that I have discovered 1000 ways that can cause failure – Thomas Edison.

Emmet_Brown

ahhaah just never needed to create one until now =) (just graduated) take it easy, thanks for help and advice :D

dan sh

That would be awful IMHO if all you need is to send selected item. You should used a parameterized constructor. Or have a public event handler so that you can handle the double click event in the Form where you need to get the selected value. Constructor would be the simplest way though.

It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD

Not Active

Just graduated? And this wasn't covered? Where did you graduate from?

I know the language. I've read a book. - _Madmatt

Lost User

tatarrullaz wrote:

just graduated

You should go right back to school. I'd written more constructors than I can count before I even started my first year at university. You have no excuse.

Lost User

class Form2 {
private string m_Data;

internal Form2(string data) {
    m\_Data = data;
}

private void Form2\_Load(...) {
    Use m\_Data here........
}

}

class Form1 {
private void ListBox1_DoubleClick(...) {
Form2 f2 = new Form2(ListBox1.SelectedText);
f2.Show();
}
}

Not Active

"Give a man a fish; you have fed him for today. Teach a man to fish; and you have fed him for a lifetime" Same goes for code.

I know the language. I've read a book. - _Madmatt

Lost User

SelectedObject = GetSelectedObjectFromListBox(); MyPopUpForm form = new MyPopUpForm(); form.SelectedObject = SelectedObject; form.Show(); or SelectedObject = GetSelectedObjectFromListBox(); MyPopUpForm form = new MyPopUpForm(SelectedObject ); form.Show(); depending on your preference. In the 1st case you need a public property in your popup form, called SelectedObject. In the setter, you need to do what you need to do. In the 2nd case you need a constructor that takes a SelectedObject as a parameter. It is usually inadvisable to use this constructor to populate your form - store it then populate when the form is shown.

___________________________________________ .\\axxx (That's an 'M')

Lost User

You are right. Until they know what a fish is, we have to give them fish :-)

Not Active

No, you missed the point. We don't give them the code, we teach them to code.

I know the language. I've read a book. - _Madmatt