protected void Submit_Click(object sender, EventArgs e)
    {
        LaptopBL lbl = new LaptopBL(Convert.ToInt64(txtSr_no.Text), txtUserName.Text, txtDept.Text, Convert.ToInt64(txtSerial_no.Text), Convert.ToDateTime(txtMake_Date.Text), txtProcessor.Text, txtRAM.Text, txtHardDisk.Text, txtCD_Drive.Text, Convert.ToInt64(txtAsset_no.Text), txtInstallation.Text, txtWarranty.Text, txtName.Text, txtPart.Text, Convert.ToInt64(txtPart_no.Text), txtWLAN_MAC.Text, Convert.ToInt16(txtFloor.Text), Convert.ToInt16(txtX_Cord.Text), Convert.ToInt16(txtY_Cord.Text));

        lbl.Delete();
        Response.Redirect("InventAdmin.aspx");
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        LaptopBL lbl = new LaptopBL();

        txtSr_no.Text = Convert.ToString(lbl.Max());
    }