问获取Blazor组件中的当前URL

EN

    @using Microsoft.AspNetCore.Blazor.Services
    @inject IUriHelper UriHelper
    @implements IDisposable

    <h1>@url</h1>
    <nav>
        <div class="nav-wrapper">
            <a href="#" class="brand-logo">Blazor</a>
            <ul id="nav-mobile" class="right hide-on-med-and-down">
                <li>
                    <NavLink href="/" Match=NavLinkMatch.All>
                        Home
                    </NavLink>
                </li>
                <li>
                    <NavLink href="/counter">
                        Counter
                    </NavLink>
                </li>
                <li>
                    <NavLink href="/fetchdata">
                        Fetch data
                    </NavLink>
                </li>
            </ul>
        </div>
    </nav>

    @functions {

        private string url = string.Empty;

        protected override void OnInit()
        {
            url = UriHelper.GetAbsoluteUri();
            UriHelper.OnLocationChanged += OnLocationChanged;
        }

        private void OnLocationChanged(object sender, LocationChangedEventArgs e)
        {
            url = newUriAbsolute;
        }

        public void Dispose()
        {
            UriHelper.OnLocationChanged -= OnLocationChanged;
        }
    }