private void AddMenuItem_Click(object sender, RoutedEventArgs e)
        {
            CalenderItemDetailDialog dialog = new CalenderItemDetailDialog();
            dialog.setDate(ItemDate.Date);

            dialog.ShowDialog();
            if (dialog.DialogResult.Value)
            {
                CalenderItemDto dto = dialog.GUIToObject();
                ApplicationData.Get().calendarItemStore.AddItem(dto);
            }
        }
        private void newButton_Click(object sender, RoutedEventArgs e)
        {
            CalenderItemDetailDialog newItemDialog = new CalenderItemDetailDialog();
            newItemDialog.ShowDialog();

            if (newItemDialog.DialogResult.Value)
            {
                CalenderItemDto item = newItemDialog.GUIToObject();
                appData.calendarItemStore.AddItem(item);
            }
        }
        private void Row_DoubleClick(object sender, MouseButtonEventArgs e)
        {
            CalenderItemDetailDialog dialog = new CalenderItemDetailDialog();
            dialog.ApplyDtoToGUI((sender as DataGridRow).DataContext as CalenderItemDto);
            dialog.ShowDialog();

            if (dialog.DialogResult.Value)
            {
                //CalenderItemDto dto = dialog.GUIToObject();
                //if (item != dto)
                //{
                //    dto.id = item.id;
                //    item = dto;

                //}
            }
        }
        private void UserControl_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            CalenderItemDetailDialog dialog = new CalenderItemDetailDialog();
            dialog.ApplyDtoToGUI(item, true);
            dialog.ShowDialog();

            if (dialog.DialogResult.Value)
            {
                CalenderItemDto dto = dialog.GUIToObject();
                if (!item.Equals(dto))
                {
                    dto.id = item.id;
                    item = dto;
                    ApplicationData.Get().calendarItemStore.UpdateItem(dto);
                }
            }
        }