public void SaveAsync() { // Hostel.hostelName = HostelName; if (FloorData.hostelId == null || FloorData.hostelId.Length == 0) { App.Current.MainPage.DisplayAlert("", "Please Select Hostel", "OK"); } else if (FloorData.blocks_id == null || FloorData.blocks_id.Length == 0) { App.Current.MainPage.DisplayAlert("", "Please Select Block", "OK"); } else if (FloorData.floorName == null || FloorData.floorName.Length == 0) { App.Current.MainPage.DisplayAlert("", "Please Enter Floor Name", "OK"); } else if (FloorData.noOfRooms == null || FloorData.noOfRooms.Length == 0) { App.Current.MainPage.DisplayAlert("", "Please Enter Room No", "OK"); } else { web.SaveFloorEntry(FloorData); } }