private async void OnSave()
{
Category newCategory = new Category()
{
Name = Name,
LastUse = DateTime.MinValue,
Words = new List <Word>()
};
foreach (string s in Words)
{
newCategory.Words.Add(new Word()
{
Text = s
});
}
await WordData.AddItemAsync(newCategory);
// This will pop the current page off the navigation stack
await Shell.Current.GoToAsync("..");
}