private void AddNew()
        {
            MailServer mailServer = new MailServer();
            string     message    = Language.Resource.Message;
            Security   security   = new Security();


            bool check = mailServer.CheckExists(tbxName.Text);

            if (check)
            {
                MessageBox.Show(Language.Resource.NameExists, message);
            }
            else
            {
                int  Num;
                bool isNum = int.TryParse(tbxPort.Text, out Num);

                if (isNum)
                {
                    mailServer.Name     = tbxName.Text;
                    mailServer.Server   = tbxServer.Text;
                    mailServer.Username = tbxUsername.Text;
                    mailServer.Password = tbxPassword.Text;
                    mailServer.Port     = Num;

                    int result = mailServer.Add();
                    if (result == 1)
                    {
                        frmManager manager = (frmManager)Application.OpenForms["frmManager"];
                        manager.SelectTab("tabMails");
                        this.Close();
                    }
                }
                else
                {
                    tbxPort.Focus();
                    MessageBox.Show(Language.Resource.NotNumber, message);
                }
            }
        }