How to access a variable in my homepage in my viewmodel class?

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Xamarin

I have build a xamarin project which populates a list of items in a listview on the homepage. I need to pass a variable on this page to the ViewModel class. How do i do that??? Help will be appreciated.

My Home page code is as below:

private async void LstItems_OnItemTapped(object o, ItemTappedEventArgs e )

    {
        var ItemCodeParam = e.Item as Item;

         var ItemCode = ItemCodeParam.ItemCode;

         await Navigation.PushAsync(new DetailItemPage(ItemCode));
I need to pass the ItemCode to my ViewModel Class.

    }

My View Model is as below

namespace MyFirstDbApp.ViewModels { public class ItemDetailsViewModel : INotifyPropertyChanged { private List _itemsList;

    public List<Item> ItemsList



    {
        get { return _itemsList; }

        set
        {
            _itemsList = value;
            OnPropertyChanged();
        }
    }

    public ItemDetailsViewModel()
    {

        InitializeDataAsync();
    }


    private async Task InitializeDataAsync()
    {






        var result = await ItemServices.GetItemsAsync().ConfigureAwait(false);

        ItemsList = result.Where(x => x.ItemCode == "").ToList();


    }


    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}
}

I need to pass the ItemCode in the Homepage to the ViewModel "

Where(x => x.ItemCode == "")

"

How can i do this??? Help will be appreciated

What I have tried:

<pre>I have build a xamarin project which populates a list of items in a listview on the homepage. I need to pass a variable on this page to the ViewModel class. How do i do that??? Help will be appreciated.