xamarin forms mvvm pattern picker dynamically - xamarin.forms

Question

I am using xamarin forms MVVM pattern. I am using picker and assign itemdisplaybinging and itemssource dynamically from sqlite database. I have attached images.
In AddItems.xaml:
enter code here
<Picker ItemDisplayBinding="{Binding itemlist.ItemName}"
ItemsSource="{Binding itemlist.ItemID}" Title="Select Item..."
Style="{StaticResource PickerFrameStyle}"></Picker>
In AddItems.xaml.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ERPSoftware.ViewModel;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace ERPSoftware.Pages.Add
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class AddItems : ContentPage
{
public AddItems()
{
InitializeComponent();
var vm = new AddViewModel();
this.BindingContext = vm;
}
}
}
In AddViewModel.cs(ViewModel):
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;
using Xamarin.Forms;
using ERPSoftware.Models;
using ERPSoftware.SQLiteDatabase;
using System.Runtime.CompilerServices;
namespace ERPSoftware.ViewModel
{
public class AddViewModel : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
private bool _IsBusy;
//public ICommand AddItemCommand { protected get; set; }
public ItemPickerPageModel _ItemPickerPageModel;
UETrackDatabase uETrackDatabase = new UETrackDatabase();
private List<ItemPickerPageModel> _itemlist=new List<ItemPickerPageModel>();
public AddViewModel()
{
IsBusy = false;
ItemPickerPageModel = new ItemPickerPageModel();
var ItemList = uETrackDatabase.GetItemPicker();
if (ItemList.Count > 0)
{
foreach(var list in ItemList)
{
_itemlist.Add(new ItemPickerPageModel {ItemID=list.ItemID,ItemName=list.ItemName });
}
}
}
public List<ItemPickerPageModel> itemlist
{
get { return _itemlist; }
private set {
_itemlist = value;
OnPropertyChanged();
}
}
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
}
I attached viewmodel screen with this. The Picker shows empty when running the project. Please help me to resolve this issue.
enter image description here
Regards,
Manthiram C

Answer 1

Your making a little bit confusion between the Bindings in the Picker.
<Picker ItemDisplayBinding="{Binding ItemName}"
ItemsSource="{Binding itemlist}"
Title="Select Item..."
Style="{StaticResource PickerFrameStyle}"></Picker>