urlReferrer在Asp.net中返回的url是什么？ [英] what url return by urlReferrer in Asp.net?

问题描述

例如，如果我从https://help.salesforce.com/apex/HTViewHelpDoc?id=sso_saml_assertion_examples.htm&language=en导航到我的页面，此代码返回的值为HttpContext.Current。 Request.UrlReferrer？

解决方案

此代码返回的值

HttpContext.Current.Request.UrlReferrer值为null



但是如果你需要第一个参数值：

HttpContext.Current.Request.Params [0]值是sso_saml_assertion_examples.htm

http referrer指示已提交数据或链接到新页面的上一页

您可以使用类似

在ASP.NET中获取它

  //   PageName来自HttpContext.Current.Request .RawUrl并由Page_Load事件提供。 
  public   static   string  GetReferrerPageName（）
 {
  string  functionReturnValue = 空; 
 
  if （（（（System.Web.HttpContext.Current.Request.UrlReferrer）！=  null ）））{
 functionReturnValue = HttpContext.Current.Request.UrlReferrer.ToString（）; 
}  else  {
 functionReturnValue =   N / A; 
} 
  return  functionReturnValue; 
} 

是的，它会返回您回到当前页面的上一个网址

获取更多信息

http：// msdn.microsoft.com/en-us/library/system.web.httprequest.urlreferrer(v=vs.110).aspx

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"?

解决方案

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"

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

//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;
}

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

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