EventHandler for btn_ConnectionStringSave

  private void btnSaveConnection_Click(object sender, EventArgs e)
        {
            string warnEmptyField = "Spceifier un Id Utilisateur et un mot de pass";
            string serverName = string.Empty;
            string db_name = string.Empty;

            if (txtServerName.Text.Trim() != string.Empty)
            {
                if (cbConnectionType.SelectedIndex == 0)
                {
                    serverName = @".\";
                    serverName += txtServerName.Text.Trim();
                }
                else
                {
                    serverName = txtServerName.Text.Trim();
                }
                connectionStringBuilder.DataSource = serverName;
            }
            else
            {
                warnEmptyField = "Spceifier le nom du serveur";
                MessageBox.Show(warnEmptyField, "", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            if (String.IsNullOrEmpty(txtBDName.Text) == false)
            {
                db_name = txtBDName.Text.Trim();
                connectionStringBuilder.InitialCatalog = db_name;
            }
            else
            {
                warnEmptyField = "Spceifier votre Base de donnée";
                MessageBox.Show(warnEmptyField, "", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            if (cbIntegratedSecurity.Checked)
            {
                connectionStringBuilder.IntegratedSecurity = true;
            }
            else
            {
                if (String.IsNullOrEmpty(txtUserName.Text) == false &&
                    String.IsNullOrEmpty(txtUserName.Text))
                {
                    connectionStringBuilder.UserID = txtUserName.Text;
                    connectionStringBuilder.Password = txtPassword.Text;
                }
                else
                {
                    warnEmptyField = "Spceifier un ID Utilisateur et un mot de pass";
                    MessageBox.Show(warnEmptyField, "", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }

            try
            {
                try
                {
                    bool connected = TestConnectionString(connectionStringBuilder.ToString());
                    if (connected)
                    {
                        MessageBox.Show("Connection  Etablie", "Success",
                                     MessageBoxButtons.OK, MessageBoxIcon.Information);
                        connectionSet = true;
                        tab_BasicInfos.PageVisible = true;
                        tabs.SelectedTabPage = tab_BasicInfos;
                        tabConnectionConfig.PageVisible = false;
                        currentConfig.ConnectionString = connectionStringBuilder.ToString();
                        DataSource.InitConnection(connectionStringBuilder.ToString());
                    }
                    else
                    {
                        MessageBox.Show("Connection Non Etablie", "Erreur",
                                   MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }

                }
                catch (Exception)
                {
                    MessageBox.Show("Connection Non Etablie", "Erreur",
                                    MessageBoxButtons.OK, MessageBoxIcon.Error);
                    DataSource.DisposeConnection();
                }
            }
            catch (Exception)
            {
                MessageBox.Show("Erreur de connection...\nImpossible d'atteindre le serveur fournis" +
                                "Veullez verfier vos parametres de connection et ressayer", "Erreur",
                                MessageBoxButtons.OK, MessageBoxIcon.Error);
                DataSource.DisposeConnection();
            }
        }