private void dataGridView_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            var dataIndexNo = this.dataGridView.Rows[e.RowIndex].Index;
            var form        = new CraftFormulaEditForm(this, dataIndexNo);

            form.ShowDialog();
        }
        private void addButton_Click(object sender, EventArgs e)
        {
            var form = new CraftFormulaEditForm(this);

            form.ShowDialog();
        }