private void ValidateFields()
        {
            if (txtPricePerHour.Text == "")
            {
                erpPricePerhour.SetError(txtPricePerHour, "This cannot be blank");
            }

            //if (txtPartID.Text == "")
            //{

            //	erpPartID.SetError(txtPartID, "This cannot be blank");

            //}
            else
            {
                Computer computer = new Computer();
                //computer.PartID = int.Parse(txtPartID.Text);
                computer.PricePerHour = double.Parse(txtPricePerHour.Text);
                computer.PartID       = int.Parse(cmbPC.SelectedItem.ToString());
                computer.Insertby     = txtInsertBY.Text;
                computer.InserDate    = DateTime.Parse(txtInsertDate.Text);

                computersBLL.ADD(computer);



                ManageComputers mg = new ManageComputers();
                mg.gridManageComputers.Refresh();
                mg.InitData();
                this.Close();
            }
        }
        private void btnSave_Click(object sender, EventArgs e)
        {
            Computer computer = new Computer();

            computer.PartID       = int.Parse(cmbPC.SelectedItem.ToString());
            computer.ComputerID   = int.Parse(txtComputerID.Text);
            computer.PricePerHour = double.Parse(txtPricePerHour.Text);
            computer.UpdatedBy    = txtupdateby.Text;
            computer.UpdateDate   = DateTime.Parse(txtUpdateDate.Text);
            computer.LastUpdate   = int.Parse(txtUpdateNo.Text);

            var result = computersBll.Modify(computer);

            if (result != null)
            {
                ManageComputers mg = new ManageComputers();
                mg.InitData();
                this.Close();
            }
        }