private void BtnAddNewRecipe_Click(object sender, RoutedEventArgs e)
{
if (string.IsNullOrWhiteSpace(TxtBoxRecipeName.Text) && string.IsNullOrWhiteSpace(TxtBoxCountOfPersonsInRecipe.Text) && string.IsNullOrWhiteSpace(TxtBoxPrice.Text))
{
MessageBox.Show("Du mangler at udfylde et felt");
}
else
{
k = new Recipe(int.Parse(TxtBoxCountOfPersonsInRecipe.Text), TxtBoxRecipeName.Text, RecipeIngredients);
handler.MakeRecipe(k);
}
}