which UrlEncode or HtmlEncode in .Net we should use?

I find many method in .net can provide UrlEncode such like:

1. System.Net.WebUtility
2. Uri.EscapeDataString or Uri.EscapeUriString
3. System.Text.Encodings.Web.UrlEncoder

For HtmlEncode:

1. System.Net.WebUtility
2. System.Text.Encodings.Web.HtmlEncoder

And My Question is: which one is recommended?