Winforms C# pass variable between forms

Question

How do i pass name value from Form1 to Form2?

Form1

public partial class Form1 : Form
{
    public string name = "xxx";
}

Form2

public partial class Form2 : Form
{
    private void Form2_Load(object sender, EventArgs e)
    {
        lblname.Text = name;
    }
}

Solution:

Form1

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        string name = "xxx";
        Form2 frm2 = new Form2(name);
        frm2.Show();
    }
}

Form2

public partial class Form2 : Form
{
    public Form2(string name)
    {
        InitializeComponent();
        label1.Text = name;
    }
}

Asked thousand times, google your title which you should have done before you've asked this. — Tim Schmelter, Jul 28 '16 at 14:37
Then you need to work on your googling skills. I feel like I see this question asked (and closed as a dupe) every other day. — rory.ap, Jul 28 '16 at 14:41
@Cris -- yes, and the answer is there are too many people who don't know how to research. Once a question as simple to find as this has been asked once, it should not be asked again. — rory.ap, Jul 28 '16 at 14:43
@Cris https://www.google.com/search?q=Winforms+C%23+pass+variable+between+forms — wa4_tasty_elephant, Jul 28 '16 at 14:45
Look, I selected your question title, right-clicked on it, choose "google..." and here's what it came up with. Thousands... https://www.google.com/search?q=Winforms+C%23+pass+variable+between+forms&ie=utf-8&oe=utf-8 — rory.ap, Jul 28 '16 at 14:45
@Cris Then you should start from the basics again. Because that's basics. — wa4_tasty_elephant, Jul 28 '16 at 14:50
Frustating is to see people who don't care to invest a minimum effort on research — Matias Cicero, Jul 28 '16 at 14:50
Since Matias solution is not recommended, i turned out doing more research and found an easy to understand solution here: http://net-informations.com/q/faq/passvalues.html . I find both links posted as the solution as hard to understand for my current C# level. — Cristian Muscalu, Jul 29 '16 at 06:45

score 0 · Answer 1 · answered Jul 28 '16 at 14:39

0

One easy but not recommended solution would be to make the field static:

public partial class Form1 : Form
{
    public static string name = "xxx";
}

Then you can simply read it from the other form:

public partial class Form2 : Form
{
    lblName.Text = Form1.name;
}

answered Jul 28 '16 at 14:39

Matias Cicero

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Using static variables is a recipe for disaster. I've worked on forms apps written this way, and, unless you want to spend your career chasing down impossible-to-find bugs, static variables should be reserved for global, mostly-immutable data. – DVK Jul 28 '16 at 15:39
@DVK I totally agree with you. In fact, I did clarify that this is not recommended at all. – Matias Cicero Jul 28 '16 at 16:24

Winforms C# pass variable between forms

Solution:

1 Answers1