Question : Getting root URL in C#

I am working in Visual Studio, and I am looking to get the root or original URL, NOT the URL of the page.  What I have is a Web Part on the page that contains a webpage in itself, and C# code always returns the URL of the page being displayed inside of the Web Part.  This is NOT the URL that I want.  I am looking for a way to get the URL that is in the address bar at the top of the web browser.  How would I do this?

Answer : Getting root URL in C#

Just when I test and prepare my below comment, shortiiik has posted a similar solution....anyway I am posting here if it helps in some way.....

Yes. UrlReferer is correct first time when page loads, then any action in the page inside web part changes UrlReferer to itself...

I think you need to save the original referer value when page inside the web part loads first time in Session variable and use it later...

      protected void Page_Load(object sender, EventArgs e)
         if (Session["OriginalUrlReferer"] == null) // or use IsPostBack
                Session["OriginalUrlReferer"] = System.Web.HttpContext.Current.Request.UrlReferrer;

      // to use it later...
      protected void Button2_Click(object sender, EventArgs e)
            Uri originalReferer = (Uri)Session["OriginalUrlReferer"];

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