private void ShowHideQrCode(object sender, RoutedEventArgs e) { if (this.CheckLockProgram()) { return; } this.Reset(); if (!this.Model.BuildQRCode) { var qrCode = Credentials.BuildQRCode(this.Model.CredentialSelected); this.Model.QrCodeToShare = qrCode; } this.Model.BuildQRCode = !this.Model.BuildQRCode && Helpers.ConvalidateSalt(isRequired: false); }