Problem with passing data between forms.

[kondi69]

Hello,

I'm right newbe in c# but I have big problem with passing data between forms.

Below code:

[FORM2]:

public Form1 main = new Form1();
        public int opuwminuty;
        public Form2()
        {
            InitializeComponent();
            numericUpDown1.Value = main.uwminuty;
        }

        private void numericUpDown1_ValueChanged(object sender, EventArgs e)
        {
            opuwminuty = Convert.ToInt32(numericUpDown1.Value);
            try { opuwminuty = Convert.ToInt32(numericUpDown1.Value); }
            catch (Exception) { MessageBox.Show("pieprzy się w numericUpDown1"); }
            MessageBox.Show("opuwminty =" + opuwminuty + ", a main.uwminuty" + main.uwminuty);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            main.uwminuty = opuwminuty;
            main.numericUpDown1.Value = opuwminuty;

            try { main.uwminuty = opuwminuty; }
            catch (Exception) { MessageBox.Show("pieprzy się w button1"); }
            MessageBox.Show("opuwminty =" + opuwminuty + ", a main.uwminuty" + main.uwminuty);
            //this.Close();

        }

So for me all should be working, but in [FORM1] after changing value of numericupdown in form2 int uwminuty doesn't change its vaule... so [FORM1]

public int uwminuty;

 private void button10_Click(object sender, EventArgs e)
        {
            MessageBox.Show("uwminuty = " + uwminuty);
        }

button10 always show old value! please help me to fix it! THANK YOU!

I forgot to add that messagebox from button1 in form2 shows good values of opuwminuty and main.uwminuty.

[Joseph Martell]

You instantiate a Form1 in Form2, but I don't see where you ever show your form:

main.Show();

Are you sure that whatever Form1 object you are clicking on is the same one that Form2.main references?