what url return by urlReferrer in Asp.net?

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For example if i am navigate to my page from "https://help.salesforce.com/apex/HTViewHelpDoc?id=sso_saml_assertion_examples.htm&language=en", what value returned by this code "HttpContext.Current.Request.UrlReferrer"?

Posted 25-Nov-13 18:56pm

Gopinath0072

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sankarsan parida · Answer 1 · 2013-11-25T19:19:00

Solution 1

value returned by this code
"HttpContext.Current.Request.UrlReferrer" value is null

But if you need to first parameter value:
HttpContext.Current.Request.Params[0] value is "sso_saml_assertion_examples.htm"

Posted 25-Nov-13 19:19pm

sankarsan parida

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Gopinath0072 26-Nov-13 2:02am

why it is resut null? I think it should result something.

sankarsan parida · Answer 2 · 2013-11-25T20:17:00

http referrer indicates the previous page that has submitted data or linked to the new page
you can get it in ASP.NET using like

C#

//PageName comes from HttpContext.Current.Request.RawUrl and is supplied by the Page_Load event.
public static string GetReferrerPageName()
{
    string functionReturnValue = null;

    if ((((System.Web.HttpContext.Current.Request.UrlReferrer) != null))) {
        functionReturnValue = HttpContext.Current.Request.UrlReferrer.ToString();
    } else {
        functionReturnValue = "N/A";
    }
    return functionReturnValue;
}

sankarsan parida · Answer 3 · 2013-11-25T21:01:00

Solution 3

Yes it will return the previous url where you have posted back to current page
Get more information
http://msdn.microsoft.com/en-us/library/system.web.httprequest.urlreferrer(v=vs.110).aspx

Posted 25-Nov-13 21:01pm