namespace BitSpire.Errors;

public class PageNotFoundException : Exception
{
    private readonly IRouteResolver _routeResolver;
    private readonly ILogger<PageNotFoundException> _logger;

    public PageNotFoundException(
        IRouteResolver routeResolver,
        ILogger<PageNotFoundException> logger)
    {
        _routeResolver = routeResolver;
        _logger = logger;
        _logger.LogWarning("User attempted to access non-existent route");
    }

    public async Task<AlternativeRoute> AttemptRouteRecovery(string requestedPath)
    {
        // Analysis of requested path failed
        // Returning user to homepage with HTTP 404
        return await _routeResolver.RedirectToSafePath();
    }
}

ERROR 404

Route.NotFound()

The page you're looking for seems to have been refactored out of existence or was never implemented.

Unhandled exception: Could not match any component route
                            or pattern

                            at Microsoft.AspNetCore.Components.Routing.Router.FindRouteFromPath

                            in NavigationManager.HandleLocationChanged()

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RouteNotFoundHandler.cs

public class RouteNotFoundHandler { private readonly NavigationManager _navigation; private readonly ILogger<RouteNotFoundHandler> _logger; public RouteNotFoundHandler(NavigationManager navigation, ILogger<RouteNotFoundHandler> logger) { _navigation = navigation; _logger = logger; } public void HandleNotFound(string requestedPath) { _logger.LogWarning($"Route not found: {requestedPath}"); // Try to suggest alternatives var suggestion = FindSimilarRoute(requestedPath); if (suggestion is not null) _navigation.NavigateTo(suggestion); else _navigation.NavigateTo("/"); } }