Use JavaScript and c-sharp to get the referer

1. The JavaScript

/**

 *  To obtain HTTP The request of Referer

 * @ishost  Boolean type  Referer Is whether to return when null Host (home page address) 

 */

function get_http_referer(ishost) {

    if (ishost === undefined) { ishost = true; }

    if (document.referrer) {

        return document.referrer;

    } else {

        if (ishost) {

            return window.location.protocol + "//" + window.location.host;

        } else {

            return "";

        }

    }

}

2. C #

/// <summary>

//Gets the Referer of the HTTP request 

/// </summary>

/// <Param name = "ishost>" Whether the Referer returns Host (home page address) </ param> < br / >
/// <returns>string</returns>

public string GetReferer(bool ishost)

{

    if ( Request.UrlReferrer != null)

    {

        return  Request.UrlReferrer.ToString();

    }

    else

    {

        if (ishost)

        {

            return Request.Url.Scheme + "://" + Request.Url.Authority;

        }

        else

        {

            return "";

        }

    }

}

3. Get each part of the Request URL in C#
Address: (link: http://localhost:1897/News/Press/Content.aspx/123? Id = 1 # toc)

Request.ApplicationPath /

Request.PhysicalPath D:ProjectsSolutionwebNewsPressContent.aspx

System.IO.Path.GetDirectoryName(Request.PhysicalPath) D:ProjectsSolutionwebNewsPress

Request.PhysicalApplicationPath D:ProjectsSolutionweb

System.IO.Path.GetFileName(Request.PhysicalPath) Content.aspx

Request.CurrentExecutionFilePath /News/Press/Content.aspx

Request.FilePath /News/Press/Content.aspx

Request.Path /News/Press/Content.aspx/123

Request.RawUrl /News/Press/Content.aspx/123?id=1

Request.Url.AbsolutePath /News/Press/Content.aspx/123

Request.Url.AbsoluteUri http://localhost:1897/News/Press/Content.aspx/123?id=1

Request.Url.Scheme http

Request.Url.Host localhost

Request.Url.Port 1897

Request.Url.Authority localhost:1897

Request.Url.LocalPath /News/Press/Content.aspx/123

Request.PathInfo /123

Request.Url.PathAndQuery /News/Press/Content.aspx/123?id=1

Request.Url.Query ?id=1

Request.Url.Fragment  

Request.Url.Segments / 

News/ 

Press/ 

Content.aspx/ 

123

4. JavaScript window.location object
(link: #)

So, have you learned how to get a page referer in javascript and C#? If you have any questions, please feel free to contact me