Blazor/BlazorApp1/Components/ListItem.razor.cs

using Microsoft.AspNetCore.Components;

namespace BlazorApp1.Components
{
    public partial class ListItem :ItemDisplay
    {
        [Parameter]
        public int Index { get; set; }

        [Parameter]
        public Item Item { get; set; }

        [Parameter]
        public bool NoDrop { get; set; }

        [CascadingParameter]
        public Inventory Parent { get; set; }

        public void changeState()
        {
            StateHasChanged();
        }

        public Item getItem()
        {
            return Item;
        }

        public int getNbElement()
        {
            return 1;
        }

        public String getTypeID()
        {
            return "ListItem";
        }

        internal void OnDragEnter()
        {
            if (NoDrop)
            {
                return;
            }
        }

        internal void OnDragLeave()
        {
            if (NoDrop)
            {
                return;
            }

        }

        internal void OnDrop()
        {
            if (NoDrop)
            {
                return;
            }

            this.Item = Parent.CurrentDragItem;
        }

        private void OnDragStart()
        {
            Parent.CurrentDragItem = this.Item;
            Parent.CurrentEllement = this;
        }
    }
}