protected void Page_Load(object sender, EventArgs e)
 {
     {
         uxWelcome.Text           = $"Hello  {Context.User.Identity.Name} , Welcome to Leasing!";
         DockSelector.DockSelect += DockSelector_DockSelect;
         int customerID = Convert.ToInt32(Session["CustomerID"]);
         uxLeaseHistory.DataSource = MarinaManager.GetLeasesByCustomerID(customerID);
         uxLeaseHistory.DataBind();
     }
 }
        protected void uxPurchase_Click(object sender, EventArgs e)
        {
            int customerID = Convert.ToInt32(Session["CustomerID"]);
            int slipID     = Convert.ToInt32(DropDownSlips.SelectedValue);
            var db         = new MarinaEntities();
            var lease      = new Lease {
                SlipID = slipID, CustomerID = customerID
            };

            db.Leases.Add(lease);
            db.SaveChanges();
            uxLeaseHistory.DataSource = MarinaManager.GetLeasesByCustomerID(customerID);
            uxLeaseHistory.DataBind();
        }