private void saveButton_Click(object sender, EventArgs e)
{
if (addressText.Text != String.Empty &&
userText.Text != String.Empty &&
passwordText.Text != String.Empty) {
curItem.address = addressText.Text;
curItem.user = userText.Text;
curItem.password = passwordText.Text;
curItem.description = notesText.Text;
writeList();
readList();
}
}