Hi h5h5,
I assume you have two forms- Form1 & Form2 and on Form1 you've a button to show up Form2.
Inside Button_Click event of the button on Form1, write below codes and you're done with what you want.
private void button3_Click(object sender, EventArgs e)
{
Form2 frm = new Form2();
this.Hide();
frm.Show();
}
Happy Coding :)
Sunny_K