Converting & to & etc

I want to convert & to &, " to " etc. Is there a function in c# that could do that without writing all the options manually?

System.Web.HttpUtility.HtmlDecode()

Edit: Note from here that "To encode or decode values outside of a web application, use..."

System.Net.WebUtility.HtmlDecode()

Use the static method

HttpUtility.HtmlEncode

to change & to & and " to ". Use

HttpUtility.HtmlDecode

to do the reverse.

You can use System.Net.WebUtility.HtmlDecode(uri);

using System.Web; 
...
var html = "this is a sample & string"; 
var decodedhtml = HttpUtility.HtmlDecode(html);