private void Table_Click_Handler(object sender, EventArgs e)
        {
            SingleTable table = new SingleTable(tableService.GetTableFromInt(Convert.ToInt32(Regex.Match(((Button)sender).Name, @"[0-9]+").Value)), member);

            Tmr_Refresh.Stop();
            this.Hide();
            table.ShowDialog();
            UpdateLabels();
            this.Show();
            Tmr_Refresh.Start();
        }
 private void btn_back_Click(object sender, EventArgs e)
 {
     this.Hide();
     Tmr_Refresh.Stop();
     if (member.Role == Staff_Type.Manager)
     {
         new Overview(member).ShowDialog();
     }
     else
     {
         new login_form().ShowDialog();
     }
     this.Close();
 }