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

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

                if (e.RowIndex >= 0)
                {
                    string poNo = gv.Rows[e.RowIndex].Cells[2].Value.ToString();

                    if (senderGrid.Columns[e.ColumnIndex] is DataGridViewImageColumn)
                    {
                        switch (senderGrid.Columns[e.ColumnIndex].Name)
                        {
                        case "Edit":
                            var frm = new Form_ProductionOrderAddEdit
                            {
                                poNo = poNo
                            };
                            if (frm.ShowDialog() == DialogResult.OK)
                            {
                                LoadOrder();
                            }
                            break;

                        case "Print":
                            break;
                        }
                    }
                    if (senderGrid.Columns[e.ColumnIndex] is DataGridViewLinkColumn)
                    {
                        LoadItem(poNo);
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }