private void button_OnOK_Click(object sender, EventArgs e)
        {
            if (this.dataGridView_Query.CurrentRow == null)
            {
                this.DialogResult          = DialogResult.None;
                this.label_ErrMessage.Text = "ÇëÑ¡ÔñÒ»Ìõ¼Ç¼£¡";
                return;
            }

            myClass_WeldingEquipment.WeldingEquipment = this.dataGridView_Query.CurrentRow.Cells["WeldingEquipment"].Value.ToString();
            myClass_WeldingEquipment.FillData();
            this.DialogResult = DialogResult.OK;
            this.Close();
        }