C# 字符串转换问题

Question

在 .NET Core 中如何简单高效地完成下面的字符串转换？var originRedirectUri = "https://q.cnblogs.com/account/signin?ReturnUrl=%2F";转换为var redirectUri = "https://passport.cnblogs.com/account/signin?ReturnUrl=https%3A%2F%2Fq.cnblogs.com%2F`";

Answer 1

UriBuilder u = new UriBuilder("url");
var q = System.Web.HttpUtility.ParseQueryString(u.Query);
q["ReturnUrl"] = "url";
u.Query = q.ToString();
var url = u.ToString();