private void updateContact()
        {
            clsContact contact;

            //make sure an there is a selected item in the List Box
            if (lvwContacts.SelectedItems.Count == 0)
            {
                showInformationMessage("You must select a user to update.");
                return;
            }

            contact = (clsContact)lvwContacts.SelectedItems[0].Tag; //tags the row to update

            string name = contact.ContactLastName + ", " + contact.ContactFirstName + " ";

            UpdateContact updateContact = new UpdateContact("Update: " + name, "Update", contact);

            updateContact.ShowDialog();

            //Rebuild table after adding, updating, or deleting a contact.
            readUsers();
            showUsers();
        }
        private void addContact()
        {
            clsContact contact = new clsContact();

            UpdateContact updateContact = new UpdateContact("Add a new User", "Add", contact);

            updateContact.ShowDialog();

            //Rebuild table after adding or updating a user.
            readUsers();
            showUsers();
        }