private void OnValueTextValueKeyDown(KeyEventArgs e)
        {
            if (_editMode)
            {
                if (e.KeyData == Keys.Escape)
                {
                    EditMode = false;
                    this.Focus();
                    return;
                }

                if (e.KeyData == Keys.Enter)
                {
                    bool success = _watchVarWrapper.SetStringValue(_valueTextBox.Text, FixedAddressList);
                    EditMode = false;
                    if (!success)
                    {
                        FlashColor(FAILURE_COLOR);
                    }
                    this.Focus();
                    return;
                }
            }
        }