Transferring variable values from Form1 to Form2

Question

I've been having a hard time transferring my variable values from my form 1 to my form2. The thing is I want to show the results I initialized in my Form1, in Form2 textBoxes as soon as the Form 2 loads (Which appears with a a ShowDialog() when I click the appropriate button).

My problem is the results don't transfer in my Form2, giving all my variables a 0 value.

Here's what I put in my Forms:

//Variables in my Form 1

public partial class Form1 : Form
{
   public static double VAR_1 = 1;
   public static double VAR_2 = 2;
   public static double VAR_3 = 3;

   //Here I put all my textBoxes and other methods of the class
}

//Variables in my Form 2

public partial class Form2 : Form
{
    private void Form2_Load(object sender, EventArgs e)
    {
         this.textBox1.Text = Form1.VAR_1.ToString();
         this.textBox2.Text = Form1.VAR_2.ToString();
         this.textBox3.Text = Form1.VAR_3.ToString();
    }
}

possible duplicate of [Passing Values Between Windows Forms c#](http://stackoverflow.com/questions/17836398/passing-values-between-windows-forms-c-sharp) — dandan78, Oct 30 '14 at 14:22
Static variables *shivers* . Try make classes for that. I suggest luaans approach to your problem :) its definitly a better approach, especially if you destroy your form upon starting a new one. — Jonny, Oct 30 '14 at 14:22

score 6 · Answer 1 · answered Oct 30 '14 at 14:20

You don't need to use "global variables" at all. Just create a method (or property) on Form2 that takes the parameters you want to use, and call that before calling ShowDialog, e.g.:

var form2 = new Form2();
form2.SetData(text1, text2, text3);
form2.ShowDialog();

You could even add those parameters to the constructor, or make your own static method to show the form instead. There's a lot of ways that don't involve regression to old-school procedural programming :)

Transferring variable values from Form1 to Form2

1 Answers1