private void button2_Click_1(object sender, EventArgs e) { if (ParScroll.Shw) { ParScroll.PCevent += new ParameterChangedEvents(this.UpdateParameter); ParScroll.Activate(); ParScroll.WindowState = FormWindowState.Normal; } else { ParScroll = new Form3(); ParScroll.K = Convert.ToDouble(textBox1.Text); ParScroll.PCevent += new ParameterChangedEvents(this.UpdateParameter); ParScroll.Show(); ParScroll.Shw = true; } }