public ExpenseViewModel(ExtendedExpense extexpense) { var expense = extexpense.Expense; expenseRep = new ExpenseRepository(); catRep = new CategoryRepository(); CategoryList = new ObservableCollection <Category>(); var iList = catRep.GetCategoriesAsync(); foreach (Category i in iList.Result) { CategoryList.Add(i); } var Id = expense.ID; TheDate = expense.Date; TheTime = expense.Date.TimeOfDay; TheCategory = extexpense.Category; TheDescription = expense.Description; TheValue = Convert.ToString(expense.Value); CategoryId = expense.CategoryId - 1; SaveExpenseCommand = new Command(async() => { TheDate = TheDate.Date; TheDate += TheTime; expense.ID = Id; expense.Description = TheDescription; expense.Value = Convert.ToDouble(TheValue); expense.Date = TheDate; expense.CategoryId = CategoryId + 1; await expenseRep.SaveExpenseAsync(expense); TheDescription = string.Empty; TheValue = string.Empty; CategoryId = -1; }); RemoveExpense = new Command(async() => { await expenseRep.DeleteExpenseAsync(expense); }); }