private void Btn_joinForm_Click(object sender, EventArgs e)
{
ZoomForm2 zoom = new ZoomForm2();
zoom.TopLevel = false;
this.panel1.Controls.Add(zoom);
zoom.FormBorderStyle = FormBorderStyle.None;
zoom.Dock = DockStyle.Fill;
zoom.Show();
}
private void Btn_openZoomForm2_Click(object sender, EventArgs e)
{
ZoomForm2 form2 = new ZoomForm2();
form2.Show();
}