How to check if a URI is wrongly or correctly built in C#

using System;
class UriExample
{
    //Entry point of Program
    static public void Main()
    {
        // Create some Uri objects
        Uri uri1 = new Uri("https://www.educative.io");
        Uri uri2 = new Uri("https://google.com");
        Uri uri3 = new Uri("http://maps.google.com/maps?q={!Account.BillingAddress}");
        Uri uri4 = new Uri("https://www.hello.124/%%");
        // check if they are correctly built
        Console.WriteLine(uri1.IsWellFormedOriginalString()); // True
        Console.WriteLine(uri2.IsWellFormedOriginalString()); // True
        Console.WriteLine(uri3.IsWellFormedOriginalString()); // False
        Console.WriteLine(uri4.IsWellFormedOriginalString()); // False
    }
}