using System;
public class Program
{
public static void Main()
var callbackUrl1 = new System.Uri("http://localhost:2757/index.html" +
"?load=email" +
"&userId=" + "12345££&^" +
"&code=" + "myCo de");
var aHref = string.Format("<a href=\'{0}'>link</a>", callbackUrl1.AbsoluteUri);
Console.WriteLine(aHref);
}