protected void btnLease_Click(object sender, EventArgs e) { Slip_Id = DockSlipControl.SlipId; //get slipid from the usercontrol if (Session["CustomerID"] != null) { custId = (int)Session["customerID"]; } var leaseSlip = new Lease { SlipID = Slip_Id, CustomerID = custId }; //pass the leaseSlip object to the manager for inserting DockManager.Add(leaseSlip); showLeasedSlips(); //show leased slips DockSlipControl.loadSlips(); //refresh the slip dorpdown }