private void BtnAddCv_Click(object sender, System.EventArgs e)
        {
            var frm = new Form_CustomerPriceAddEdit();

            if (frm.ShowDialog() == DialogResult.OK)
            {
                LoadCustomerPrice();
            }
        }
        private void GvCv_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            try
            {
                DataGridView senderGrid = (DataGridView)sender;

                if (senderGrid.Columns[e.ColumnIndex] is DataGridViewImageColumn && e.RowIndex >= 0)
                {
                    string   customerCode = gvCv.Rows[e.RowIndex].Cells[ConstColumns.CustomerCode].Value.ToString();
                    string   productCode  = gvCv.Rows[e.RowIndex].Cells[ConstColumns.ProductCode].Value.ToString();
                    DateTime startDate    = (DateTime)gvCv.Rows[e.RowIndex].Cells[ConstColumns.StartDate].Value;

                    switch (senderGrid.Columns[e.ColumnIndex].Name)
                    {
                    case "EditCv":
                        var frm = new Form_CustomerPriceAddEdit
                        {
                            customerCode = customerCode,
                            productCode  = productCode,
                            startDate    = startDate
                        };
                        if (frm.ShowDialog() == DialogResult.OK)
                        {
                            LoadCustomerPrice();
                        }
                        break;

                    case "Print":
                        break;
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }