/// <summary>
/// Manages the lists and summation updates that happen when a vegetable
/// is added to the list. This method is responsible for calling other
/// methods that calculate data that it then uses for maintanence and
/// display purposes.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void addButton_Click(object sender, EventArgs e)
{
int total = 0;
tempVegetable.manageVegetableList(vegetables, this.vegetableList.SelectedValue, int.Parse(this.quantityInput.Text));
tempVegetable.manageVegetableListBox(vegetables, this.vegetableListBox);
total += tempVegetable.handleBeansAndSquash(vegetables);
total = tempVegetable.addValues(vegetables, total);
this.total.Text = total.ToString( ) + " sqft. are needed for this garden.";
}