private void comboBoxFileReturnType_DropDown(object sender, EventArgs e)
        {
            try
            {
                var comboBox = (ComboBox)sender;

                ComboBoxItem.DropDown(comboBox);
            }
            catch (Exception exception)
            {
                Log.Error(exception, false);

                MessageBox.Show(this, exception.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }