private void tsPatientRoom_Click(object sender, EventArgs e)
{
if (room == null)
{
room = new frmPatientRoom();
room.MdiParent = this;
room.FormClosed += new FormClosedEventHandler(room_FormClosed);
room.Show();
}
else
{
room.Activate();
room.WindowState = FormWindowState.Normal;
}
}
void room_FormClosed(object sender, FormClosedEventArgs e)
{
room = null;
}