private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
DataStorage.WriteXML <ObservableCollection <Expense> >(expenses, "ExpenseData.xml");
DataStorage.WriteXML <ObservableCollection <Category> >(categories, "CategoryData.xml");
}
private ObservableCollection <Category> GetExistingCategories()
{
ObservableCollection <Category> existingCategories = DataStorage.ReadXML <ObservableCollection <Category> >("CategoryData.xml");
return(existingCategories);
}
