Passing variables between forms using a button [duplicate]

Answer 1

you can use second form constructor.

    private int input;
    public Form2(int input)
    {
        this.input = input;
        InitializeComponent();
    }

when you create an object , you can pass your var(int in here):

        int myvar=911;
        Form2 tmp = new Form2(myvar);
        tmp.Show();

now you can use that private variable in form2:

lbl.Text=input.toString();

---

in Form1:

private void button1_Click(object sender, EventArgs e)
    {
        Form2 tmp = new Form2(911);
        tmp.Show();
    }

and in Form2:

    public Form2(int input)
    {
        InitializeComponent();
        label1.Text = input.ToString();
    }

send your code for solve this problem.i can't find out why it doesn't recognize your vars without your codes!