private void BtnBoleta_Click(object sender, EventArgs e) { FrmBoleta frm = new FrmBoleta(); frm.Show(); this.Hide(); }
private void btnFactura_Click(object sender, EventArgs e) { var form = Application.OpenForms.OfType <FrmBoleta>().FirstOrDefault(); FrmBoleta frmboleta = form ?? new FrmBoleta(); AddFormInPanel(frmboleta); colorSelect(btnFactura, btnInicio, btnAlumno, btnModulo, btnReporte); }