Below is a small example of how to make a request via Http HttpClient in C #.

// init
var myHttpClient = new HttpClient();

// await request the function must be async
var request = await myHttpClient.GetAsync(new Uri("http://miosito.it/index.php?nocache=" + Guid.NewGuid(), UriKind.RelativeOrAbsolute));
        
// response
var response = await request.Content.ReadAsStringAsync();

Adding nocache = "+ Guid.NewGuid () can disable the cache, which is useful when we have to make a request frequently.