public async void AddGoal(string goalName, string goalDescription)
{
var goal = new Goal
{
Name = goalName,
Description = goalDescription,
Dates = new ObservableCollection<DateTime>()
};
this._goals.Add(goal);
await SaveGoalDataAsync();
}
public async void CompletedGoalToday(Goal goalInstance)
{
var index = this._goals.IndexOf(goalInstance);
this._goals[index].AddDate();
await this.SaveGoalDataAsync();
}