How to re-render a component from another component in Blazor?

I have an Ecommerce Blazor Server project and I want to re-render the Cart component after adding a item to the Cart from a Product Component. I tried to inherits the Cart component to Product component and run a public method of Cart component to re-render its component.

The Add to cart method in Product Component.

Product.Razor

 public async Task AddToCart(){    //The adding logic in this area    StateHasChanged();    Reload(); // this method is inherited from the Cart Component trying to re-render the Cart Component    //Does not work}

Cart.Razor

[Parameter]public List<Models.Cart> CartItem { get; set; }protected override void OnInitialized(){    CartItem = _context.Cart.Where(i => i.CustomUserId == _userManager.GetUserId(_httpContextAccessor.HttpContext.User) && !i.IsSold).ToList();}public void Reload(){    OnInitialized();    StateHasChanged();}

The method run through successfully but the UI is not re-rendered like the way I want it to be.

I though the UI will re-render when I run the OnInitialized() method and StateHasChanged()?

Edit: I update my Reload() method and call that at the end of AddToCart() method but it doesn't work :(

Cart.Razor

 protected override void OnParametersSet(){    CartItem = _context.Cart.Where(i => i.CustomUserId == _userManager.GetUserId(_httpContextAccessor.HttpContext.User) && !i.IsSold).ToList();}public void Reload(){    OnParametersSet(); //updated but still not working    StateHasChanged();}

Product.Razor

public async Task AddToCart()    {        //The adding logic in this area        Reload(); // this method is inherited from the Cart Component trying to re-render the Cart Component        //Does not work        StateHasChanged();    }