Global variables

Question

I got a question about variables in C#.

I am trying to save a variable in a different class. I use Add --> New Item --> Class (So it is a complete new class where I want to save my variables I need to use throughout my project). I use getters and setters to save them.

I call the class in Form1 by using: private GlobalVars globalVars = new GlobalVars();

Now when I press a button a new Form appears where I use the same statement else I can't access the class. But when
I try to access a variable by using e.g: globalVars.intClient.toString(); I always get 0. The variables have been reset.

How can I solve this problem ??

Jaish Mathews · Answer

Hi With your code it is not possible because public partial class Form1 : Form { private Class classe = new Class(); Above code meant that you are creating a copy of class named Class which can use only inside class Form1. It's not accessible to any other class public partial class Form2 : Form { private Class classe = new Class(); Above code meant that you are creating a copy of class named Class which can use only inside class Form2. It's not accessible to any other class So you have 2 copies of the class Class one inside Form1 and another inside Form2. The code classe.intClient = 4 only applied to the copy of Form1 not in side the copy of Form2. So Form2 can't access classe.intClient = 4. If you need to access it globally do like below. Redefine Class LIke Below class Class { public static int intClient { get; set; } } Set The Above Property Any Where Liek Below Class.intClient = 4

Rowie · Answer

Thank you it worked. I also had to change: classe.intClient = 4; to Class.intClient = 4; Else I got an error.

Rowie · Answer

I will explain a bit better: I got 3 files: - Form1.cs - Form2.cs - GlobalVars.cs Form1 looks like: public partial class Form1 : Form { private Class classe = new Class(); public Form1() { InitializeComponent(); } private void button1_Click(object sender EventArgs e) { classe.intClient = 4; Form2 form = new Form2(); form.Show(); } } Form2 looks like: public partial class Form2 : Form { private Class classe = new Class(); public Form2() { InitializeComponent(); MessageBox.Show(classe.intClient.ToString()); } } Class.cs looks like: class Class { public int intClient { get; set; } } Now when I press the button on form 1 I set a value in class.cs. The messagebox.show() gives 0 as output. I want it to output 4 since I have set that on Form1.

Mahesh Chand · Answer

I am assuming these variable values are fixed. Create a static class with static members and you can access them anywhere.