How to carry a value in a class through multiple forms

Question

I have a value in my first form of a game which I would like to access on the next 2 forms. This value is saved in a private class. How would I go about doing this? All help is greatly appreciated.

Robert Harvey · Answer 1 · 2014-03-25T22:23:43.053

0

Create a new constructor in your target Winform class that takes the value as a parameter. Do the same for the subsequent form.

private MyType _value;

public MyForm(MyType myValue) : this()
{
    _value = myValue;
}

To show the new form from your original form:

var form = new MyForm(someValue);
form.Show(); // or ShowDialog()

edited Mar 25 '14 at 22:23

answered Mar 25 '14 at 22:11

Robert Harvey

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Thanks for your response. I have 3 Forms, How can this be done to be accessed on the 3rd form? – user3461835 Mar 25 '14 at 22:22
Exactly the way I described it. – Robert Harvey Mar 25 '14 at 22:23
I don't know what you mean by "twice on one form." If you want to open two other forms from a form, yes, you can do that. It might be confusing for the user, though. – Robert Harvey Mar 25 '14 at 22:26
I want to access the name the user entered (in a text box) on the start screen on 3 other forms – user3461835 Mar 25 '14 at 22:29
Each form can have its own constructor method, just like the one I described above. `MyOtherForm(string name);` `MyThirdForm(string name);` – Robert Harvey Mar 25 '14 at 22:30
I get this error message when trying to access the class - Object reference not set to an instance of an object. – user3461835 Mar 25 '14 at 22:44

chouaib · Answer 2 · 2014-03-28T04:14:42.857

0

Use get/set to define your value:

Class Form1
int _x; // value you want to access from other class/form
public int YourNumber;
{
  get
  {
    return this._x;
  }
  set
  {
     this._x= value;
  }
}

Now to access/modify from other class for example Form2:

Class Form2
Form1 form = new Form1();
form.YourNumber = 5; // and it's changed in Form1 also

int y = form.YourNumber; // and you get it from Form1

edited Mar 28 '14 at 04:14

answered Mar 26 '14 at 06:47

chouaib

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score 0 · Answer 3 · edited May 23 '17 at 12:20

0

Use Global Variable concept so that you can access across multiple forms. You can find details from How to make global variables?

Example: http://dotnetmirror.com/Articles/wpf/116/global-variables-in-wpf-winforms-mvvm

edited May 23 '17 at 12:20

Community

1
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answered Mar 28 '14 at 05:19

dotnetmirror.com

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How to carry a value in a class through multiple forms

3 Answers3