private void btnAdd_Click(object sender, EventArgs e)
 {
     frmIns_Certificates afrmIns_Certificates = new frmIns_Certificates(this);
     afrmIns_Certificates.ShowDialog();
 }
 private void btnAddNewCertificate_Click(object sender, EventArgs e)
 {
     try
     {
         frmIns_Certificates afrmIns_Certificates = new frmIns_Certificates(this);
         afrmIns_Certificates.Show();
     }
     catch (Exception ex)
     {
         MessageBox.Show("frmTsk_SystemUser_Infromation.btnAddNewCertificate_Click\n" + ex.ToString(), "Lỗi", MessageBoxButtons.OK, MessageBoxIcon.Error);
     }
 }
 private void btnInsCertificates_ItemClick(object sender, ItemClickEventArgs e)
 {
     try
     {
         frmIns_Certificates afrmIns_Certificates = new frmIns_Certificates();
         afrmIns_Certificates.Show();
     }
     catch (Exception ex)
     {
         MessageBox.Show("frmMain.btnInsCertificates_ItemClick\n" + ex.ToString(), "Lỗi", MessageBoxButtons.OK, MessageBoxIcon.Error);
     }
 }