如何使用System.Uri .NET类检查URL是否有效？

using System;
using System.Uri;

class Program
{
    static void Main(string[] args)
    {
        string url = "https://www.example.com";
        bool isValid = IsValidUrl(url);

        if (isValid)
        {
            Console.WriteLine("URL is valid.");
        }
        else
        {
            Console.WriteLine("URL is not valid.");
        }
    }

    static bool IsValidUrl(string url)
    {
        try
        {
            Uri uri = new Uri(url);
            return true;
        }
        catch (UriFormatException)
        {
            return false;
        }
    }
}