public CategoryPage(EntryPageViewModel viewModel, string selectedenvelope, string month) { InitializeComponent(); BindingContext = viewModel; obj = viewModel;//since viewModel has scope only inside constructor bit we need viewModel obj outside constructor as well listview.ItemsSource = viewModel.envelope; ToolbarItem item1 = new ToolbarItem { Text = selectedenvelope + " Details", Priority = 0, Order = ToolbarItemOrder.Primary }; ToolbarItem item2 = new ToolbarItem { Text = month, Priority = 0, Order = ToolbarItemOrder.Primary }; // "this" refers to a Page object ToolbarItems.Add(item1); ToolbarItems.Add(item2); // BindingContext = viewModel; // listview.ItemsSource = viewModel.envelope; }
private async void CheckExpense() { var hasTransaction = File.Exists(App.transaction_filemane); if (!hasTransaction) { File.Create(App.transaction_filemane); } else { //read transactions EntryPageViewModel.ReadAllTransactions(viewModel.transactions, App.transaction_filemane); viewModel.UpdateExpenses(viewModel.expenses, viewModel.currentMonth, viewModel.transactions); } MonthPicker.SelectedIndex = viewModel.currentMonth - 1; }