WooCommerce rest api access failing with httpWebRequest

I am trying to get WooCommerce data using WooCommerce v3 API from c#.

When I use below url in browser I get the products data as json;

https://MyUsername:MyPassword@mydomain.com/wp-json/wc/v3/products?consumer_key=ck_12345678901234567890&consumer_secret=cs_12345678901234567890

When I use url

https://MyUsername:MyPassword@mydomain.com/wp-json/wc/v3/products

and

consumer_key = ck_12345678901234567890 and consumer_secret = cs_12345678901234567890

as Params in Postman then I get the products data as well. So the credentials and url are valid.

However when I try to do this using HttpWebRequest it fails with "The remote server returned an error: (401) Unauthorized" exception. My code is below and the exception appears on the last line of code.

The vales in HttpWebRequest before the GetResponseAsync call can be seen here.

What am I doing wrong?

Thanks

Regards

string wc_url = "https://MyUsername:MyPassword@mydomain.com/wp-json/wc/v3/products?consumer_key=ck_12345678901234567890&consumer_secret=cs_12345678901234567890";
HttpWebRequest httpWebRequest = null;

httpWebRequest = (HttpWebRequest)WebRequest.Create(wc_url);
httpWebRequest.AllowReadStreamBuffering = false;
    
WebResponse wr = await httpWebRequest.GetResponseAsync().ConfigureAwait(false);