/// <summary>
/// Adds a new item to item list
/// Automatically creates a code for the new item
/// Gets cost from user input in addCostTextBox
/// Gets description from user input in addDescriptionTextBox
/// Updates database with new item
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void addButton_Click(object sender, RoutedEventArgs e)
{
if (evaluateUserInput(addCostTextBox.Text, addDescriptionTextBox.Text))
{
string cost = addCostTextBox.Text.Trim('$');
string desc = "\'" + addDescriptionTextBox.Text + "\'";
itemDao.addItem(sql.addItem(cost, desc));
itemList.Add(new Item((itemList.Count + 1).ToString(), addDescriptionTextBox.Text, "$" + cost));
itemsDataGrid.ItemsSource = itemList;
itemsDataGrid.Items.Refresh();
}
}