想要从一种形式获取数据以将它们用作另一种形式的变量

Question

I'm almost done doing a Connect4 game with VS2012 using WinForms. Everything is working well but I wanted to bring the options for the user on a dedicated Start Menu window. On that menu I have two comboBoxes I need to take the text from to use them as a value for two variables in my other form (the game window). I also have one New Game button that should call a method from my other form if that's possible (basically, I made an "Initialization()" method in my game form and I'd like it to be launched when I click the "New Game" button on the other form).

I only found tutorials that show how to do very basic things from one form to an other (such as labeling texts) but II didn't find an answer to my specific problem.

I used this in my main form to instantiate the menu form

public FormMenu myMenu;
myMenu = new FormMenu();

What I want to do is that I could do something like this in the other form :

amountOfRows = Int32.Parse(myMenu.comboBoxRows.Text);
amountOfColumns = Int32.Parse(myMenu.comboBoxColumns.Text);

Any idea how I could do that?

Answer 1

I would love to see some example code so I can help see where your confusion lies. WinForms requires the other form to be instantiated.

OtherForm form = new OtherForm();

Once the form is instantiated you should be able to run code from it.

EDIT:

Based on your implementation I would suggest making public methods within FormMenu that return these int values.

public int ReturnRows()
{
    return Int32.Parse(myMenu.comboBoxRows.Text);
}

public int ReturnColumns()
{
    return Int32.Parse(myMenu.comboBoxColumns.Text);
}

Then from the other form in which myMenu is instantiated you can call myMenu.ReturnRows() and myMenu.ReturnColumns()

Answer 2

The easiest way would be to store a reference to your form in the menue as a variable. (you already named it myMenu )

Then you should create the property/properties you need in the form an add a setter for the values. (see example here )

Last you update the form fields with

myMenu.property = newvalue;

That`s all about it