protected void btnSave_Click(object sender, EventArgs e)
    {
        try
        {
            int      Vessel_ID = int.Parse(ddlVessel.SelectedValue);
            DateTime?Date      = UDFLib.ConvertDateToNull(txtInitialDate.Text);
            if (Date == null)
            {
                lblMessage.Text = "Please enter valid portage bill date" + TodayDateFormat;
                return;
            }

            int Key = BLL_PB_PortageBill.INS_Initial_Office_Portage_Bill_DL(Vessel_ID, Date, int.Parse(Session["USERID"].ToString()));
            if (Key == 1)
            {
                lblMessage.Text = "Initialize office portage bill has been saved successfully.";
            }
            else
            {
                lblMessage.Text = "Initialize office portage bill already exists.";
            }
        }
        catch (Exception ex)
        {
            lblMessage.Text = ex.Message;
        }
    }