JiLinCpApp/JiLinApp/Components/NativeHost.cs

using Avalonia.Controls;
using Avalonia.Platform;
using System;

namespace JiLinApp.Components;

public class NativeHost : NativeControlHost
{
    public IntPtr Handle { get; set; }

    public NativeHost() : base()
    { }

    protected override IPlatformHandle CreateNativeControlCore(IPlatformHandle parent)
    {
        IPlatformHandle? pfHandle = base.CreateNativeControlCore(parent);
        Handle = pfHandle.Handle;
        return pfHandle;
    }
}