Displaying data in picker

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C#

Xamarin

Need Help
please give me full solution

i am creating a Xamarin Form Page and there is Picker Control in my page .
i want to display a list in picker.and data is coming from the API. after that i am trying to Bind API Data with my Picker Control
My Problem is that
i am able to fetch the data but only single value is displaying only. only one value not complete list.

i am sending my codes which i am trying to do

GetAircraftCustomerDetails

this method is for API and result is coming from the API properly


please check full of codes and reply to me soon

What I have tried:

This is UI

<Picker x:Name="selectAircraft" Title="--Select--" ItemDisplayBinding="{Binding AircraftModel,Mode=TwoWay}" ItemsSource="{Binding aircraft}">

public async void GetAirCraftRegin()
      {
          if (!Util.CheckInternet())
          {
              return;
          }
          InputClass = new NRCMainInput();
          AircraftRegnList = new ObservableCollection<List<RootResultData>>();
          aircraft = new List<aircraftDetail>();
          WorkOrderApiHelper _workOrderApiHelper = new WorkOrderApiHelper();
          InputClass.OUID = 1;
          InputClass.AIRCRAFT_REG_NO = "123231";
          string Result = await _workOrderApiHelper.GetAircraftCustomerDetails(InputClass);
          if (!string.IsNullOrEmpty(Result))
          {

              var objdata = JsonConvert.DeserializeObject<RootResultData>(Result);
              foreach (var items in objdata.Result.ModelCust)
              {
                  aircraftDetail details = new aircraftDetail();
                  details.AircraftModel = items.AircraftModel;
                  aircraft.Add(details);

                  selectAircraft.ItemsSource = aircraft;

              }





          }

      }

internal async Task<string> GetAircraftCustomerDetails(NRCMainInput InputClass)
      {
          ServiceProcess _Service = new ServiceProcess();
          var ReqString = Newtonsoft.Json.JsonConvert.SerializeObject(InputClass);
          var result = await _Service.CommonPostAsync(URLConstants.NEWNRCAirCraft + "?AIRCRAFT_REG_NO="+ InputClass.AIRCRAFT_REG_NO + "&OUID=" + InputClass.OUID,ReqString);
          return result;
      }