C#

Mark Nischalke wrote:

C# 4.0 introduces optional parameters, you can't do it in 3.5.

class Form1:Form
{
button1_Click
{
Form2 form2 = new Form2("My Text");
}
}

class Form2:Form
{
public Form2(string caption)
{
this.Text = caption;
}
}

public partial class Form1 : Form
    {
        string text;

        public Form1(string receivedText)
        {
            text = receivedText;
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form2 f = new Form2();
            this.Hide();
            f.Show();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            if (text == "")
            {
            }
            else
            {
                label1.Text = text;
            }
        }       
    }

public partial class Form2 : Form
    {
        public Form2()
        {          
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form1 f = new Form1(textBox1.Text);
            this.Hide();          
        }       
    }