public void Update(Refuelling refuelling)
        {
            refuelling.EnsureValid();

            DataSource.DataContext.Refresh(System.Data.Linq.RefreshMode.KeepCurrentValues, refuelling);
            DataSource.DataContext.SubmitChanges();
        }
        public void Add(Refuelling refuelling)
        {
            refuelling.EnsureValid();

            DataSource.DataContext.Refuellings.InsertOnSubmit(refuelling);
            DataSource.DataContext.SubmitChanges();
        }
 public void Update(Refuelling refuelling)
 {
     refuelling.EnsureValid();
 }
        public void Add(Refuelling refuelling)
        {
            refuelling.EnsureValid();

            DataStore.Refuellings.Add(refuelling);
        }