private void AmmunitionCreate_Click(object sender, RoutedEventArgs e) { if (TextBoxAmmunitionName.Text != "" && TextBoxCoefficient.Text != null && TextBoxGrain.Text != "" && TextBoxDiameter.Text != null) { _create.AddAmmunition(TextBoxAmmunitionName.Text, float.Parse(TextBoxCoefficient.Text), float.Parse(TextBoxGrain.Text), float.Parse(TextBoxDiameter.Text)); PopulateControls(); } }