sql table not getting updated on submit button

   protected void bnSubmit_Click(object sender, EventArgs e)
    {
    
        Vuln v = new Vuln(Guid.Parse(vulnerabilityId.Text),
            txtApplicationID.Text,
            DropDownList1.SelectedValue,
            DropDownList2.SelectedValue,
            txtRequestor.Text,
            txtPenTestor.Text,
            txtTestType.Text,
            DateTime.ParseExact(txtcalOpenedDate.Text, "dd/MM/yyyy", CultureInfo.InvariantCulture), ...